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


*'''When:''' Thursdays at 4:00pm (unless there is a [https://www.math.wisc.edu/deptmeetings Department Meeting])
*'''When:''' Wednesdays at 4:00pm in VV 901
*'''Where:''' Zoom (contact SES or J-LT for link) <s>901 Van Vleck Hall</s>
*'''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]
*'''Announcements:''' Contact SES or J-LT to be added as a guest to our Slack channel.
*'''Announcements:''' Contact the organizers to join this meeting


== Fall 2020 ==
== Fall 2024 ==
    
    
{| cellpadding="8"
{| cellpadding="8"
!align="left" | date
!align="left" | Date
!align="left" | speaker
!align="left" | Speaker
!align="left" | title
!align="left" | Title
|-
|-
|Sept. 3
|Sep 11
|Organizational meeting
|Spagnolie
|
|Growth and buckling of filaments in viscous fluids, Part I
|-
|-
|Sept. 10
|Sep 18
|''no group meeting''
|Ohm
|''faculty meeting @ 3:30pm''
|Rods in flows: from geometry to fluids
|-
|-
|Sept. 17
|Sep 25
|Saverio
|–
|
|
|-
|-
|Sept. 24
|Oct 2
|Wil
|Arthur Young (Rycroft Group)
|Geometric flows and moving surfaces
|Multiphase Taylor–Couette flow transitions
|-
|-
|Oct 1
|Oct 9
|Bryan
|Albritton
|Homogenization of the advection-diffusion equation in the presence of a source
|I thought we already knew everything about shear flows?
|-
|-
|Oct 8
|Oct 16
|Chandler
|Investigating active liquid crystals using an immersed deformable body
|-
|Oct 23
|Ohm
|
|
|''faculty meeting''
|-
|-
|Oct 15
|Oct 30
|Chris
|Thiffeault
|Evolutionary stable strategies and the connection between game theory and the Ising model
|<s>Maxey-Riley equation for active particles</s> Time-dependent reciprocal theorem
|-
|-
|Oct 22
|Nov 6
|Yu
|–
|Narrow exit problem with sink flow
|
|-
|-
|Oct 29
|Nov 13
|Hongfei
|Ahmad Zaid Abassi
|Complex model of swimmer interactions
(UC Berkeley)
|Finite-depth standing water waves: theory, computational algorithms, and rational approximations
|-
|-
|Nov 5
|Nov 20
|Jean-Luc
|Jingyi Li
|Equilibria of Fokker-Planck equations
|Arrested development and traveling waves of active suspensions in nematic liquid crystals
|-
|-
|Nov 12
|Nov 27
|Hongyi Huang
|''Thanksgiving''
|Bubbles!
|-
|Nov 19
|
|Watch party for ''Gallery of Fluid Motion'' videos
|-
|Nov 26
|
|
|''Thanksgiving''
|-
|-
|Dec 3
|Dec 4
|Thiffeault
|
|
|''faculty meeting''
|-
|Dec 10
|Saverio
|Hydrodynamic interaction of swimmer with boundary
|-
|-
|}
|}
== 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/Summer2020|Summer 2020]]
*[[Applied/Physical_Applied_Math/Spring2020|Spring 2020]]
*[[Applied/Physical_Applied_Math/Spring2020|Spring 2020]]

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


Return to the Applied Mathematics Group Page

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