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= Physical Applied Math Group Meeting =
= Physical Applied Math Group Meeting =


*'''When:''' Thursdays at 4:00pm (unless there is a departmental meeting)
*'''When:''' Wednesdays at 4:00pm in VV 901
*'''Where:''' 901 Van Vleck Hall
*'''Where:''' 901 Van Vleck Hall
*'''Organizers:''' [http://www.math.wisc.edu/~spagnolie Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]
*'''Organizers:''' [https://people.math.wisc.edu/~chr/ Chris Rycroft], [http://www.math.wisc.edu/~spagnolie Saverio Spagnolie] and [http://www.math.wisc.edu/~jeanluc Jean-Luc Thiffeault]
*'''To join the Physical Applied Math mailing list:''' See the [https://admin.lists.wisc.edu/index.php?p=11&l=phys_appl_math mailing list website].
*'''Announcements:''' Contact the organizers to join this meeting
 
<br>
 
== Spring 2017 Semester ==


== Fall 2024 ==
 
{| cellpadding="8"
{| cellpadding="8"
!align="left" | date
!align="left" | Date
!align="left" | speaker
!align="left" | Speaker
!align="left" | title
!align="left" | Title
|-
|-
|Jan. 19, '''2:30-3:30pm'''
|Sep 11
|Louis Fan
|Spagnolie
|Stochastic and deterministic spatial models for complex systems
|Growth and buckling of filaments in viscous fluids, Part I
|-
|-
|Jan. 26
|Sep 18
|Planning meeting
|Ohm
|
|Rods in flows: from geometry to fluids
|-
|-
|Feb. 2
|Sep 25
|Will
|–
|Brosseau, Hickey, and Vlahovska, [http://journals.aps.org/prfluids/abstract/10.1103/PhysRevFluids.2.014101 Electrohydrodynamic Quincke rotation of a prolate ellipsoid].
|-
|Feb. 9
|''Faculty meeting''
|
|
|-
|-
|Feb. 16
|Oct 2
|Art
|Arthur Young (Rycroft Group)
|Prost, Julicher, and Joanny, [http://www.mpipks-dresden.mpg.de/mpi-doc/julichergruppe/julicher/AGP2015.pdf Active gel physics]
|Multiphase Taylor–Couette flow transitions
|-
|Feb. 23
|Huanyu
|''thesis progress report''
|-
|Mar. 2
|Tom
|Stenhammar et al., [https://www.dropbox.com/s/57tyek9v6k22wak/Morozov.pdf?dl=0 The role of correlations in the collective behaviour of microswimmer suspension]
|-
|-
|Mar. 9
|Oct 9
|''Faculty meeting''
|Albritton
|
|I thought we already knew everything about shear flows?
|-
|-
|Mar. 16
|Oct 16
|Anne
|Chandler
|Gart et al., [https://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.3.044019 Droplet Impacting a Cantilever: A Leaf-Raindrop System] (2015).
|Investigating active liquid crystals using an immersed deformable body
|-
|-
|Mar. 23
|Oct 23
|''Spring break''
|Ohm
|
|
|-
|-
|Mar. 30
|Oct 30
|John
|Thiffeault
|Topological Entropy and the Burau Representation
|<s>Maxey-Riley equation for active particles</s> Time-dependent reciprocal theorem
|-
|-
|Apr. 6
|Nov 6
|''Faculty meeting''
|–
|
|
|-
|-
|Apr. 13
|Nov 13
|Hannah Kreczak
|Ahmad Zaid Abassi
|The acceleration and deceleration of mixing rates by discontinuities in chaotic flows
(UC Berkeley)
|Finite-depth standing water waves: theory, computational algorithms, and rational approximations
|-
|-
|Apr. 20
|Nov 20
|Hannah Kreczak
|Jingyi Li
|The acceleration and deceleration of mixing rates by discontinuities in chaotic flows (cont'd)
|Arrested development and traveling waves of active suspensions in nematic liquid crystals
|-
|-
|Apr. 27
|Nov 27
|
|''Thanksgiving''
|
|
|-
|-
|May. 4
|Dec 4
|''Faculty meeting''
|Thiffeault
|
|
|-
|-
|}
|}


<br>
== Abstracts ==
 
=== '''Ahmad Abassi, University of California, Berkeley''' ===
Title: Finite-depth standing water waves: theory, computational algorithms, and rational approximations
 
We generalize the semi-analytic standing-wave framework of Schwartz and Whitney (1981) and Amick and Toland (1987) to finite-depth standing gravity waves. We propose an appropriate Stokes-expansion ansatz and iterative algorithm to solve the system of differential equations governing the expansion coefficients. We then present a more efficient algorithm that allows us to compute the asymptotic solution to higher orders. Finally, we conclude with numerical simulations of the algorithms implemented in multiple-precision arithmetic on a supercomputer to study the effects of small divisors and the analytic properties of rational approximations of the computed solutions. This is joint work with Jon Wilkening (UC Berkeley).


== Archived semesters ==
== Archived semesters ==
*[[Applied/Physical Applied Math/Spring2024|Spring 2024]]
*[[Applied/Physical_Applied_Math/Fall2023|Fall 2023]]
*[[Applied/Physical_Applied_Math/Fall2021|Fall 2021]]
*[[Applied/Physical_Applied_Math/Spring2021|Spring 2021]]
*[[Applied/Physical_Applied_Math/Fall2020|Fall 2020]]
*[[Applied/Physical_Applied_Math/Summer2020|Summer 2020]]
*[[Applied/Physical_Applied_Math/Spring2020|Spring 2020]]
*[[Applied/Physical_Applied_Math/Fall2019|Fall 2019]]
*[[Applied/Physical_Applied_Math/Spring2019|Spring 2019]]
*[[Applied/Physical_Applied_Math/Fall2018|Fall 2018]]
*[[Applied/Physical_Applied_Math/Spring2018|Spring 2018]]
*[[Applied/Physical_Applied_Math/Fall2017|Fall 2017]]
*[[Applied/Physical_Applied_Math/Spring2017|Spring 2017]]
*[[Applied/Physical_Applied_Math/Fall2016|Fall 2016]]
*[[Applied/Physical_Applied_Math/Fall2016|Fall 2016]]
*[[Applied/Physical_Applied_Math/Spring2016|Spring 2016]]
*[[Applied/Physical_Applied_Math/Spring2016|Spring 2016]]

Latest revision as of 17:50, 14 November 2024

Physical Applied Math Group Meeting

Fall 2024

Date Speaker Title
Sep 11 Spagnolie Growth and buckling of filaments in viscous fluids, Part I
Sep 18 Ohm Rods in flows: from geometry to fluids
Sep 25 –
Oct 2 Arthur Young (Rycroft Group) Multiphase Taylor–Couette flow transitions
Oct 9 Albritton I thought we already knew everything about shear flows?
Oct 16 Chandler Investigating active liquid crystals using an immersed deformable body
Oct 23 Ohm
Oct 30 Thiffeault Maxey-Riley equation for active particles Time-dependent reciprocal theorem
Nov 6 –
Nov 13 Ahmad Zaid Abassi

(UC Berkeley)

Finite-depth standing water waves: theory, computational algorithms, and rational approximations
Nov 20 Jingyi Li Arrested development and traveling waves of active suspensions in nematic liquid crystals
Nov 27 Thanksgiving
Dec 4 Thiffeault

Abstracts

Ahmad Abassi, University of California, Berkeley

Title: Finite-depth standing water waves: theory, computational algorithms, and rational approximations

We generalize the semi-analytic standing-wave framework of Schwartz and Whitney (1981) and Amick and Toland (1987) to finite-depth standing gravity waves. We propose an appropriate Stokes-expansion ansatz and iterative algorithm to solve the system of differential equations governing the expansion coefficients. We then present a more efficient algorithm that allows us to compute the asymptotic solution to higher orders. Finally, we conclude with numerical simulations of the algorithms implemented in multiple-precision arithmetic on a supercomputer to study the effects of small divisors and the analytic properties of rational approximations of the computed solutions. This is joint work with Jon Wilkening (UC Berkeley).

Archived semesters


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