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BEGIN:VEVENT
SUMMARY:Qingyuan Zhao (University of Cambridge)
DTSTART:20240213T140000Z
DTEND:20240213T145000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/1/">
 Sensitivity analysis for observational studies: past\, now and future</a>\
 nby Qingyuan Zhao (University of Cambridge) as part of Fluids and Structur
 es Seminar @ UEA\n\nLecture held in ZICER 2.03.\n\nAbstract\nAny observati
 onal study of causal relationships relies on untestable assumptions. Thus\
 , the credibility of a study crucially depends on the extent that its assu
 mptions can be defended. The purpose of this talk is to give a high-level 
 overview of how the statistical literature on sensitivity analysis evolved
  from its inception in the debate about smoking and lung cancer in the 195
 0s. I will review the first sensitivity analysis by Cornfield in 1959\, th
 e model and methodology based on randomization inference proposed by Rosen
 baum\, and other related literature. A recent emerging trend is to formula
 te sensitivity analysis for observational studies as a stochastic programm
 ing problem\, which provides a unified conceptual framework for many exist
 ing models and methods. I will review some recent progress in this area an
 d highlight the variety of theoretical\, methodological\, and practical di
 fficulties involved in this framework. Part of this talk is based on joint
  work with Yao Zhang and Tobias Freidling.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mansi Singh (IIT Kharagpur)
DTSTART:20240220T140000Z
DTEND:20240220T145000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/2/">
 Mathematical study of hydrodynamic response of non-uniform thin flexible p
 lates in frequency and time domain</a>\nby Mansi Singh (IIT Kharagpur) as 
 part of Fluids and Structures Seminar @ UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Rui Zhu (City University of London)
DTSTART:20240227T140000Z
DTEND:20240227T145000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/3
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/3/">
 Locally-enriched cross-reconstruction for few-shot fine-grained image clas
 sification</a>\nby Rui Zhu (City University of London) as part of Fluids a
 nd Structures Seminar @ UEA\n\nLecture held in TPSC 2.05A.\n\nAbstract\nFe
 w-shot fine-grained image classification has attracted considerable attent
 ion in recent years for its realistic setting to imitate how humans conduc
 t recognition tasks. Metric-based few-shot classifiers have achieved high 
 accuracies. However\, their metric function usually requires two arguments
  of vectors\, while transforming or reshaping three-dimensional feature ma
 ps to vectors can result in loss of spatial information. Image reconstruct
 ion is thus involved to retain more appearance details: the test images ar
 e reconstructed by different classes and then classified to the one with t
 he smallest reconstruction error. However\, discriminative local informati
 on\, vital to distinguish sub-categories in fine-grained images with high 
 similarities\, is not well elaborated when only the base features from a u
 sual embedding module are adopted for reconstruction. Hence\, we propose t
 he novel local content-enriched cross-reconstruction network (LCCRN) for f
 ew-shot fine-grained classification. In LCCRN\, we design two new modules:
  the local content-enriched module (LCEM) to learn the discriminative loca
 l features\, and the cross-reconstruction module (CRM) to fully engage the
  local features with the appearance details obtained from a separate embed
 ding module. The classification score is calculated based on the weighted 
 sum of reconstruction errors of the cross-reconstruction tasks\, with weig
 hts learnt from the training process. Extensive experiments on four fine-g
 rained datasets showcase the superior classification performance of LCCRN 
 compared with the state-of-the-art few-shot classification methods. Codes 
 are available at:https://github.com/lutsong/LCCRN.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Giuseppe Baio (University of East Anglia)
DTSTART:20240305T140000Z
DTEND:20240305T145000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/4/">
 Monopoles\, Alice rings and topological interfaces in a quantum fluid</a>\
 nby Giuseppe Baio (University of East Anglia) as part of Fluids and Struct
 ures Seminar @ UEA\n\n\nAbstract\nVortices are common natural phenomena\, 
 from turbulence in fluids to atmospheric cyclones. In quantum fields\, the
 y can emerge with discrete values of circulation. These are topological ex
 citations (TEs)\, predicted from symmetry arguments alone and showing stri
 king similarities\, from quantum fluids\, to condensed matter physics and 
 cosmology. Advancements in ultracold atomic physics are prospecting the co
 ntrolled creation of previously inaccessible TEs in magnetic quantum fluid
 s known as spinor Bose-Einstein condensates (BECs).\n\nIn this seminar\, I
  will address TEs and their dynamics in a spin-2 BECs\, where the rich var
 iety of order-parameter symmetries allows exotic phenomena such as fractio
 nal vortex charges\, monopoles\, and non-singular spin textures. In partic
 ular\, I will show how energy relaxation causes a monopole in the uniaxial
 -nematic phase to deform into a spin-Alice ring\, exhibiting a composite c
 ore with distinct short- and long-distance topologies [1]. Numerical simul
 ations reveal dynamical oscillations between the spin-Alice ring and a spl
 it-core hedgehog configuration. Moreover\, I will also address TEs and the
 ir stability across optically induced topological interfaces\, where sudde
 n topology changes occur similarly to the early-universe theories [2].\n\n
 [1] Baio\, G. & Borgh M. O\, arXiv:2401.04103 (2024).\n[2] Baio\, G. et al
 .\, Phys. Rev. Research 6\, 013046 (2024).\n
LOCATION:https://researchseminars.org/talk/UEA_mth/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Francesco Giglio (University of Glasgow)
DTSTART:20240312T140000Z
DTEND:20240312T145000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/5
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/5/">
 From Statistical Thermodynamics to (C-)Integrability and back</a>\nby Fran
 cesco Giglio (University of Glasgow) as part of Fluids and Structures Semi
 nar @ UEA\n\n\nAbstract\nPhase transitions in macroscopic systems at the e
 quilibrium have shown to be intimately related to the theory of nonlinear 
 conservation laws. Examples range from simple systems like van der Waals f
 luids\, (uniaxial) Nematic Liquid Crystal models and spin systems to compl
 ex systems as Random Matrix models. In such models\, order parameters fulf
 il suitable nonlinear PDEs with prescribed initial conditions and phase tr
 ansitions are explained in terms of shock waves travelling in the space of
  control parameters (e.g. thermodynamic variables). \nRestricting our anal
 ysis to simple systems\, many paradigmatic models in Statistical Thermodyn
 amics turn out to be C-Integrable\, that is there exists a nonlinear trans
 formation which maps a non-linear PDE of hydrodynamic type associated with
  the physical problem to a linear one. Conversely\, from a C-Integrability
  ansatz applied to first principles of Thermodynamics one can retrieve fam
 ilies of models which often generalise known ones\, providing insights of 
 physical relevance. \n\nThe talk aims at discussing the connection between
  Statistical Thermodynamics and C-Integrability in the context of fluid sy
 stems\, with a special focus on recent results on biaxial Nematic Liquid C
 rystals (doi: 10.1098/rspa.2023.0701). We will see that the occurrence of 
 distinct thermodynamic phases in certain degenerate domains of thermodynam
 ic variables is identified by reductions of the underlying system of conse
 rvation laws. This highlights the importance of developing solid mathemati
 cal and theoretical tools to extend simple thermodynamic models and constr
 uct more general ones.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ioannis Karmpadakis (Imperial College London)
DTSTART:20240319T140000Z
DTEND:20240319T145000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/6
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/6/">
 The statistics of waves over planar coastal beaches: Theory and Experiment
 s</a>\nby Ioannis Karmpadakis (Imperial College London) as part of Fluids 
 and Structures Seminar @ UEA\n\nLecture held in TPSC 2.05A.\n\nAbstract\nT
 he magnitude and characteristics of waves in the coastal zone is of critic
 al importance for the design and operation of most engineering application
 s. These include topics such as the prediction of coastal erosion and floo
 ding\, the design of engineering solutions and the development of nearshor
 e marine renewable devices and offshore wind turbines. With the aim to inf
 orm these applications\, this work will present recent findings on the acc
 urate modelling and understanding of coastal processes.\n\nRather than foc
 using solely on regular wave patterns\, this work delves into the statisti
 cal representation of random wave variables\, a crucial aspect often overl
 ooked in traditional analyses. To achieve this\, an extensive dataset comp
 rising long random wave simulations was generated at the Hydrodynamics Lab
 oratory of Imperial College London. By parametrically exploring a broad pa
 rameter range of incident storm conditions across three distinct planar be
 ach bathymetric profiles\, we aim to provide comprehensive insights into c
 oastal wave evolution. High-resolution analysis of water surface elevation
 s\, covering the entire length of the beach and encompassing over half a m
 illion waves per location\, was conducted. Additionally\, numerical invest
 igations employing a phase-resolving\, non-hydrostatic model (SWASH) were 
 performed to validate the findings.\n\nComparative analyses between our da
 tasets and existing theoretical frameworks shed light on the distribution 
 of wave heights and crest heights. Furthermore\, we investigate the interp
 lay between nonlinear wave evolution\, wave breaking\, and the underlying 
 topography of the problem. The present work highlights some disparities be
 tween theory and empirical measurements but also offers valuable physical 
 insights. These insights\, coupled with practical considerations tailored 
 for engineers\, aim to facilitate more accurate and effective coastal engi
 neering solutions.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alice Thompson (University of Manchester)
DTSTART:20240430T130000Z
DTEND:20240430T135000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/7
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/7/">
 Feedback control and continuation for deformable bubbles</a>\nby Alice Tho
 mpson (University of Manchester) as part of Fluids and Structures Seminar 
 @ UEA\n\n\nAbstract\nIn this talk\, I explore how feedback control and con
 trol-based continuation (CBC) can be used to both stabilize and detect uns
 table steady states in physical experiments. CBC aims to create experiment
 al equivalents of numerical methods such as tracking steady states and bif
 urcations which would otherwise not be possible in experiments.  Here I de
 scribe our recent work on using CBC to explore bubble deformation in Hele-
 Shaw cells – the first such application of CBC in free-surface fluid mec
 hanics. For the case of a propagating bubble (a Saffman-Taylor bubble)\, w
 e use a numerical simulation of the system to develop a control strategy a
 nd act as a numerical experiment. We show how CBC protocols can be used to
  detect the unstable double-tipped propagating bubble state in nonlinear s
 imulations\, for both moving actuators and a more realistic setup involvin
 g an array of fixed-position actuators. Finally\, I will also discuss some
  of our recent laboratory experimental results for using CBC for non-propa
 gating bubbles placed in a straining flow\, where we have successfully tra
 cked both singly- and doubly-unstable steady branches connected via a limi
 t point associated with bubble breakup.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jia Chen (University of York)
DTSTART:20240514T130000Z
DTEND:20240514T135000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/8/">
 Estimation of Large Dynamic Precision Matrices with a Latent Semiparametri
 c Structure</a>\nby Jia Chen (University of York) as part of Fluids and St
 ructures Seminar @ UEA\n\nLecture held in SCI 1.50.\n\nAbstract\nThis pape
 r studies the estimation of dynamic precision matrices of high-dimensional
  time series satisfying an approximate factor model with multiple conditio
 ning variables. We introduce an easy-to-implement semiparametric method to
  estimate each entry of the conditional covariance matrices of the common 
 factors and the idiosyncratic components via Model Averaging MArginal Regr
 ession (MAMAR). We apply the CLIME method to obtain the estimate of the dy
 namic precision matrix for the idiosyncratic components and then we utilis
 e the Sherman-Morrison-Woodbury formula to obtain the dynamic precision ma
 trix for the time series. Under some regularity conditions\, we derive the
  uniform consistency for the proposed estimators. We provide a simulation 
 study that illustrates the finite-sample performance of the developed meth
 odology and then apply the proposed method in construction of the minimum 
 variance portfolio from daily stock returns of S\\&P 500 index constituent
 s in 2022.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Maria Di Paolo (University of East Anglia)
DTSTART:20240521T130000Z
DTEND:20240521T135000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/9
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/9/">
 Effects of ocean tidal mixing on exoplanet climates and habitability</a>\n
 by Maria Di Paolo (University of East Anglia) as part of Fluids and Struct
 ures Seminar @ UEA\n\nLecture held in EFRY 1.01.\n\nAbstract\nDue to their
  abundance and their observational advantages\, red dwarfs offer the best 
 chance of finding habitable planets through sheer numbers. Potentially hab
 itable planets in these systems orbit close to their host star and are the
 refore subjected to strong tidal forcings. Oceans have an important impact
  on planetary climate\, so understanding their effects is a necessary part
  of modelling terrestrial exoplanets in order to understand future observa
 tions. Taking into account the impact of ocean tides can lead to significa
 nt effects on planetary climate. \n\nWe have conducted studies with an int
 ermediate complexity coupled atmosphere-ocean general circulation model (F
 ORTE2.0). We investigated the case of non synchronous terrestrial planets 
 in close orbits in the habitable zone of their red host star. By consideri
 ng scenarios in which the magnitude of tidal forcings varies over a range 
 of values\, we were able to determine that key quantities such as temperat
 ure and overturning circulation strength are affected by tidal strength.\n
 \nWe examined how climates corresponding to different ocean tidal mixing r
 espond to a decrease of the incoming stellar flux. We found that the outco
 me of these simulations is highly dependent on the ocean tidal mixing: for
  a fixed value of stellar flux\, a different magnitude of tidally driven m
 ixing can lead to either snowball planets or to temperate worlds.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Takuji Waseda (University of Tokyo)
DTSTART:20240415T140000Z
DTEND:20240415T145000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/10
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/10/"
 >A large scale breakup of land-fast ice by waves in Antarctica</a>\nby Tak
 uji Waseda (University of Tokyo) as part of Fluids and Structures Seminar 
 @ UEA\n\nLecture held in SCI 0.31.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Prof. Mark Cooker (University of East Anglia)
DTSTART:20241008T120000Z
DTEND:20241008T130000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/11
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/11/"
 >Inside the envelope</a>\nby Prof. Mark Cooker (University of East Anglia)
  as part of Fluids and Structures Seminar @ UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr. Alberto Villois (University of East Anglia)
DTSTART:20241015T120000Z
DTEND:20241015T130000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/12
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/12/"
 >Solitary Waves in Superfluids and Their Connection to the Origin of Drag<
 /a>\nby Dr. Alberto Villois (University of East Anglia) as part of Fluids 
 and Structures Seminar @ UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr. Jack Keeler (University of East Anglia)
DTSTART:20241022T120000Z
DTEND:20241022T130000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/13
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/13/"
 >Navigating phase-space: The dynamical systems approach to fluid dynamics<
 /a>\nby Dr. Jack Keeler (University of East Anglia) as part of Fluids and 
 Structures Seminar @ UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tatiana Khabakhpasheva (UEA)
DTSTART:20241029T130000Z
DTEND:20241029T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/14
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/14/"
 >Elastic impact onto a liquid surface: Stresses\, Pressure\, Dynamic Ampli
 fication Factor</a>\nby Tatiana Khabakhpasheva (UEA) as part of Fluids and
  Structures Seminar @ UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Josh Shelton (Bath)
DTSTART:20241105T130000Z
DTEND:20241105T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/15
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/15/"
 >Beyond-all-order asymptotics in the equatorial Kelvin wave and free surfa
 ce water waves</a>\nby Josh Shelton (Bath) as part of Fluids and Structure
 s Seminar @ UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thomasina Ball (Warwick)
DTSTART:20241112T130000Z
DTEND:20241112T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/16
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/16/"
 >Wrinkles and creases in thin layers of viscoplastic fluid</a>\nby Thomasi
 na Ball (Warwick) as part of Fluids and Structures Seminar @ UEA\n\nAbstra
 ct: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Xin Guan (Imperial College London)
DTSTART:20250218T130000Z
DTEND:20250218T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/17
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/17/"
 >Evolution of vortex sheets under a horizontal electric field</a>\nby Xin 
 Guan (Imperial College London) as part of Fluids and Structures Seminar @ 
 UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ellen Luckins (University of Warwick)
DTSTART:20250225T130000Z
DTEND:20250225T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/18
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/18/"
 >Modelling drying porous media</a>\nby Ellen Luckins (University of Warwic
 k) as part of Fluids and Structures Seminar @ UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Maria Di Paolo (University of East Anglia)
DTSTART:20251104T130000Z
DTEND:20251104T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/19
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/19/"
 >Climate Patterns of Spin-Orbit Resonant Exoplanets Around Low-Mass Stars<
 /a>\nby Maria Di Paolo (University of East Anglia) as part of Fluids and S
 tructures Seminar @ UEA\n\nLecture held in SCI 3.05.\n\nAbstract\nM dwarfs
  are the most promising candidates for finding habitable worlds through at
 mospheric characterization. Planets in the habitable zone of low-mass star
 s experience intense tidal forcings and often become tidally locked. Despi
 te the majority of research being centered on the climate dynamics of sync
 hronously rotating planets in this scenario\, synchronous rotation is not 
 an inevitable outcome of tidal locking. Several different circumstances ca
 n result in an asynchronous rotation\, and in some instances can lead to s
 pin-orbit resonances (SORs).\nIn this talk\, we will explore the climates 
 of two different 3:2 SOR scenarios with a coupled atmosphere-ocean general
  circulation model. Given the crucial role played by the oceans in shaping
  planetary climate\, we adopt two different ocean tidal forcing parameteri
 zations for each SOR scenario. Each of these cases are simulated with both
  a dynamical ocean and a thermodynamical ocean.\nOur findings reveal strik
 ing differences between the analyzed resonant cases and the commonly studi
 ed synchronous cases. Periodic climate patterns are observed\, with climat
 ic features such as clouds and rainfall exhibiting a 60° longitudinal shi
 ft relative to the substellar point. The evolution of quantities such as t
 he planetary thermal emission during a stellar period is potentially notew
 orthy from the observational point of view.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tommy Moorcroft (University of East Anglia)
DTSTART:20250304T130000Z
DTEND:20250304T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/20
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/20/"
 >The meta-stable and stable thermal equilibrium of a photonic mesh lattice
 </a>\nby Tommy Moorcroft (University of East Anglia) as part of Fluids and
  Structures Seminar @ UEA\n\n\nAbstract\nn the limit of short optical puls
 es\, an optical double loop experiment can be modelled using a photonic me
 sh lattice describing a system of coupled wave fields in discrete space an
 d time. For an alternating phase modulation\, the photonic mesh lattice po
 ssesses a linear dispersion relation with two bands that are completely is
 olated.  Here we study the process of thermalisation of a single band\, us
 ing the framework of weak wave turbulence. Previous experimental and numer
 ical observations suggest that for single band excitation\, a Rayleigh-Jea
 ns distribution is observed among the normal modes\, seeming to reach a th
 ermal equilibrium [1]. However\, for longer time scales\, a power leakage 
 process occurs destabilising the single band Rayleigh-Jeans. Eventually th
 e power is equally split between bands\, reaching a full thermal equilibri
 um in both bands simultaneously\, with the total linear energy tending to 
 zero. As a consequence of this\, the temperature and chemical potential ar
 e now dependent on one another and cannot be arbitrarily chosen.\n\n[1] A.
  L. Marques Muniz and F. O. Wu and P. S. Jung and M. Khajavikhan and D. N.
  Christodoulides and U. Peschel : Observation of photon-photon thermodynam
 ic processes under negative optical temperature conditions Science 379 n.6
 636\, 1019-1023 (2023)\n
LOCATION:https://researchseminars.org/talk/UEA_mth/20/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Swapnadip De Chowdhury (IIT Kharagpur)
DTSTART:20250704T120000Z
DTEND:20250704T130000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/21
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/21/"
 >Recent progress in development of novel marine renewable energy systems</
 a>\nby Swapnadip De Chowdhury (IIT Kharagpur) as part of Fluids and Struct
 ures Seminar @ UEA\n\nLecture held in SCI 0.66.\n\nAbstract\nClimate chang
 e stands out as the foremost challenge confronting the 21st century\, and 
 it’s imperative to address it within the next 20 to 30 years to avert ir
 reversible alterations to our ecosystem and mitigate effects on the human 
 population. Urgency and significance underscore the need to harness altern
 ative energy sources\, displacing reliance on fossil fuels while ensuring 
 energy security. Despite being an underused asset\, renewable energy holds
  immense promise\, potentially satisfying a notable percentage of global e
 nergy demands by 2050.\nI will discuss the modelling of arrays of wave ene
 rgy converters\, particularly in coastal waters. Devices in coastal waters
  are cost-effective measures that can achieve power generation while also 
 ensuring coastal protection. The work is underpinned by mathematical model
 ling of an Elastically Moored Flexible Multibody Wave Energy Converter. Fu
 ll linear (potential flow) theory is the standard benchmark for model pred
 ictions of hydrodynamics of floating bodies and wave interactions between 
 the bodies. Solutions are typically obtained in the frequency domain\, whe
 re the equations of motion for the bodies can be written in the form of a 
 coupled damped harmonic oscillator (CDHO) model\, but with frequency depen
 dent coefficients owing to the coupling with the water.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Susam Boral (Trinity College Dublin)
DTSTART:20250822T120000Z
DTEND:20250822T130000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/22
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/22/"
 >Time-Domain Analysis of Periodic Dynamics in Flexible Submarine Cables</a
 >\nby Susam Boral (Trinity College Dublin) as part of Fluids and Structure
 s Seminar @ UEA\n\nLecture held in SCI 1.20.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/22/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Davide Proment (University of East Anglia)
DTSTART:20251209T130000Z
DTEND:20251209T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/23
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/23/"
 >Roberts-Jones solitary waves on the two-dimensional sphere</a>\nby Davide
  Proment (University of East Anglia) as part of Fluids and Structures Semi
 nar @ UEA\n\nLecture held in SCI 0.31.\n\nAbstract\nRoberts-Jones solitary
  waves\, also known as Roberts-Jones solitons\, are fully nonlinear\, loca
 lised traveling wave solutions of the Gross-Pitaevskii equation in two and
  three spatial dimensions [1]. At low speeds\, these waves manifest as vor
 tex dipoles in two dimensions and vortex rings in three dimensions\, creat
 ing topological excitations in the field’s phase. As the wave speed appr
 oaches a critical value\, the vortex structure vanishes\, leaving behind a
  simple dip in the field’s amplitude.\n \nIn this work\, we explore the 
 existence and stability of Roberts-Jones solitary waves in curved spatial 
 geometries\, specifically on the two-dimensional sphere. We compare these 
 solitonic structures with delocalised Bogoliubov excitations\, shedding li
 ght on their role in novel experimental realisations of ultracold atomic g
 ases confined within spherical shells. Our findings offer new insights int
 o the interplay between geometry and nonlinear wave dynamics in quantum fl
 uids.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ian Roberts (Aerotex)
DTSTART:20260209T160000Z
DTEND:20260209T170000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/24
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/24/"
 >In-flight icing – the challenges of high-speed droplet impingement and 
 surface flows</a>\nby Ian Roberts (Aerotex) as part of Fluids and Structur
 es Seminar @ UEA\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/UEA_mth/24/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eric Hester (University of Bath)
DTSTART:20260224T130000Z
DTEND:20260224T140000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/25
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/25/"
 >Automating Differential Geometry For Fluid Mechanics</a>\nby Eric Hester 
 (University of Bath) as part of Fluids and Structures Seminar @ UEA\n\n\nA
 bstract\nPhysical laws are coordinate-invariant\, but practical computatio
 ns are not. Good coordinates and frames can vastly simplify calculations\,
  speeding up numerical simulations as well as facilitating rigorous proofs
 . But this doesn't make them easy to use. Though the chain rule and vector
  calculus are sufficient in principle\, problems involving nonstandard geo
 metries\, curvilinear coordinates\, or moving interfaces can rapidly spira
 l in complexity. Coordinate expansions become a major source of errors and
  lost time. Computer algebra systems help\, but functionality for general 
 geometries isn't "out-of-the-box". Other higher-level packages like xAct a
 re powerful\, but are often designed for index calculations in general rel
 ativity rather than typical continuum-mechanics PDEs with boundaries and c
 onstraints. There is a missing middle of tools to automatically convert sy
 stems of PDEs on nonstandard geometries to their concrete component forms.
 \n\nI will introduce a small Mathematica package\, Tensors\, that aims to 
 close this gap. Given coordinate mappings\, tensor fields\, frames\, and m
 etrics on manifolds and their boundaries\, the package automatically trans
 lates expressions composed of standard differential operators and geometri
 c data (e.g. gradients\, integrals\, curvatures\, normals etc.) into compo
 nent form. Automating this conversion makes complex geometric calculations
  faster\, more reproducible\, and easier to generalise. I will illustrate 
 with an application from multiphase fluid dynamics\, showing how the packa
 ge streamlines geometric constructions needed for high-order asymptotics\,
  leading to better-conditioned\, complexity-optimal solvers for free-bound
 ary problems.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/25/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mark Blyth (UEA)
DTSTART:20260428T120000Z
DTEND:20260428T130000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/26
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/26/"
 >Kuzmak’s method - tour de force or tour de farce?</a>\nby Mark Blyth (U
 EA) as part of Fluids and Structures Seminar @ UEA\n\nLecture held in SCI 
 3.05.\n\nAbstract\nIn 1959 Kuzmak introduced a new method for constructing
  asymptotic solutions to ordinary differential equations that describe non
 linear oscillators. The approach is effectively a nonlinear variant of the
  WKB method. Kuzmak's method was later refined by Luke (1966) and can be v
 iewed as a precursor to Whitham Modulation Theory for nonlinear waves. The
  method appears to be not so well known. In this talk we will show how it 
 can be applied using the example of the simple\, damped pendulum.  As is w
 ell known\, with no damping the problem can be solved exactly using ellipt
 ic functions\, and the oscillation period depends on the amplitude (i.e. t
 he oscillations are non-isochronous). With damping active\, the basic asym
 ptotic approach is one of multiple scales\, with the fast time scale descr
 ibing the oscillations and the slow time scale describing the gradual dimi
 nution in amplitude as energy slowly leaks away. In a key step\, the fast 
 time scale is chosen to effectively fix the oscillation period\, and this 
 allows a bounded solution to be constructed. We show how the key elements 
 of the method work\, providing sufficient details to fully construct the l
 eading order solution.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/26/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Simon Cox (Aberystwyth University)
DTSTART:20260526T120000Z
DTEND:20260526T130000Z
DTSTAMP:20260422T225826Z
UID:UEA_mth/27
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UEA_mth/27/"
 >Bubble properties and growth rates in coarsening wet foams</a>\nby Simon 
 Cox (Aberystwyth University) as part of Fluids and Structures Seminar @ UE
 A\n\nLecture held in SCI 3.05.\n\nAbstract\nIn an aqueous foam\, gas can d
 iffuse through the liquid phase\, changing the sizes of the bubbles. On\na
 verage\, large bubbles grow while small bubbles shrink\, and subsequently 
 disappear. Thus the average\nbubble size increases\, and the length-scale 
 of the foam coarsens. This reduces the efficacy of foams in\napplications 
 such as soil remediation and firefighting\, and it reduces the shelf-life 
 of foamed foods.\n\nCoarsening is well characterised in the low (dry foam)
  and high (dilute) limits of liquid fraction ϕ. In\nthe dry limit (ϕ =0)
  the gas flow is through the thin films separating polyhedral bubbles\, wh
 ile in the\ndilute limit (ϕ =100%) there are no thin films and the gas fl
 ows through bulk liquid between isolated\nspherical bubbles. Growth laws f
 or individual bubbles are known\, as is the exponent of time by which\nthe
  average bubble size evolves in a scaling state. However\, these propertie
 s have not yet been\nconvincingly established for intermediate liquid frac
 tions\, which are found in most applications.\n\nThe growth rate of a bubb
 le is determined by (i) its pressure relative to that of its neighbours\, 
 which is\nrelated to the curvature of its liquid/gas interfaces\, and (ii)
  its surface area in contact with other\nbubbles. I will describe mean-fie
 ld approximations for a bubble’s pressure and contact area at arbitrary\
 nliquid fraction [1]\, validated against bubble-scale simulations.\n\nThes
 e approximations can be combined to give a growth law for a bubble of a gi
 ven size in a\ncoarsening foam of a given liquid fraction. From this growt
 h law we predict scaling-state bubble size\ndistributions\, that is\, we f
 ind a similarity solution of the continuity equation for the number of bub
 bles\nthat leaves the distribution of bubble sizes\, when scaled by their 
 average\, independent of time. I will\npresent results for various liquid 
 fractions [2] and compare them with recent experiments on the\nInternation
 al Space Station [3].\n\nReferences\n\n[1] J. Morgan and S.J. Cox (2024) E
 ffects of liquid fraction and contact angle on structure and coarsening in
 \ntwo-dimensional foams. J. Fluid. Mech.\, 999: A10.\n\n[2] J. Morgan and 
 S.J. Cox (2026) Mean-field model of bubble size distribution in coarsening
  wet foams. Soft\nMatter\, 22: 1601-1617.\n\n[3] Galvani\, N.\, et al. (20
 23). Hierarchical bubble size distributions in coarsening wet liquid foams
 . Proc. Nat.\nAcad. Sci\, 120: e2306551120.\n
LOCATION:https://researchseminars.org/talk/UEA_mth/27/
END:VEVENT
END:VCALENDAR