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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>
 
== Fall 2015 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
|-
|-
|Sep 3
|Sep 11
|Jean-Luc Thiffeault
|Spagnolie
|Optimizing heat exchangers
|Growth and buckling of filaments in viscous fluids, Part I
|-
|-
|Sep 10
|Sep 18
|Colin Wahl
|Ohm
|Computing the Evans function via solving a linear boundary-value ODE
|Rods in flows: from geometry to fluids
|-
|-
|Sep 17
|Sep 25
|Faculty Meeting
|–
|
|
|-
|-
|Sep 24
|Oct 2
|Will Mitchell
|Arthur Young (Rycroft Group)
|Radiative heat transfer between surfaces
|Multiphase Taylor–Couette flow transitions
|-
|-
|Oct 1
|Oct 9
|no meeting
|Albritton
|
|I thought we already knew everything about shear flows?
|-
|-
|Oct 8
|Oct 16
|Marko Budisic
|Chandler
|(Meta)heuristic optimization: Simulated annealing, Genetic algorithms, and other black magic [http://dx.doi.org/10.1145/937503.937505 [a good survey]]
|Investigating active liquid crystals using an immersed deformable body
|-
|-
|Oct 15
|Oct 23
|Peter Mueller
|Ohm
|Non-classical size-dependent particle diffusion in active fluids [http://de.arxiv.org/pdf/1505.05803 [experimental results]] and, as time permits, [http://scitation.aip.org/content/aip/journal/pof2/26/8/10.1063/1.4891570 [theoretical background]]
|
|-
|-
|Oct 22
|Oct 30
|Saverio Spagnolie
|Thiffeault
|Swimming in anisotropic fluids [http://www.math.wisc.edu/~spagnolie/Papers/ksp15.pdf], [http://www.math.wisc.edu/~spagnolie/Papers/tmasw15.pdf]
|<s>Maxey-Riley equation for active particles</s> Time-dependent reciprocal theorem
|-
|-
|Oct 29
|Nov 6
|Tom Morrell
|–
|Global time evolution of viscous vortex rings [http://link.springer.com/article/10.1007/s00162-009-0155-0]
|
|-
|-
|Nov 5
|Nov 13
|Art Evans
|Ahmad Zaid Abassi
|The force on a boundary in active matter [http://arxiv.org/pdf/1510.07731.pdf]
(UC Berkeley)
|Finite-depth standing water waves: theory, computational algorithms, and rational approximations
|-
|-
|Nov 12
|Nov 20
|Brian Street
|Jingyi Li
|(Analysis seminar)
|Arrested development and traveling waves of active suspensions in nematic liquid crystals
|-
|-
|Nov 19
|Nov 27
|Faculty Meeting
|''Thanksgiving''
|
|
|-
|-
|Nov 26
|Thanksgiving break
|
|-
|Dec 3
|TBA
|TBA
|-
|Dec 10
|Faculty Meeting
|
|}
|}


<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/Spring2016|Spring 2016]]
*[[Applied/Physical_Applied_Math/Fall2015|Fall 2015]]
*[[Applied/Physical_Applied_Math/Spring2015|Spring 2015]]
*[[Applied/Physical_Applied_Math/Spring2015|Spring 2015]]
*[[Applied/Physical_Applied_Math/Summer2014|Summer 2014]]
*[[Applied/Physical_Applied_Math/Summer2014|Summer 2014]]

Latest revision as of 18:32, 4 December 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

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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