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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 2024 ==
 
== Fall 2018  ==
    
    
{| cellpadding="8"
{| cellpadding="8"
!align="left" | date
!align="left" | Date
!align="left" | speaker
!align="left" | Speaker
!align="left" | title
!align="left" | Title
|-
|-
|Sep. 6
|Sep 11
|Jean-Luc
|Spagnolie
|Organizational meeting; J-LT speaks on Aldous & Diaconis
|Growth and buckling of filaments in viscous fluids, Part I
|-
|-
|Sep. 13
|Sep 18
|Son Tu
|Ohm
|[https://arxiv.org/abs/1808.06129 Rate of convergence for periodic homogenization of convex Hamilton-Jacobi equations in one dimension]
|Rods in flows: from geometry to fluids
|-
|-
|Sep. 20
|Sep 25
|–
|
|
|''Faculty Meeting''
|-
|-
|Sep. 27
|Oct 2
|[https://www.math.cmu.edu/~gautam/sj/index.html Gautam Iyer] (CMU)
|Arthur Young (Rycroft Group)
|''TBA''
|Multiphase Taylor–Couette flow transitions
|-
|-
|Oct. 4
|Oct 9
|
|Albritton
|
|I thought we already knew everything about shear flows?
|-
|-
|Oct. 11
|Oct 16
|Prerna Gera
|Chandler
|''TBA''
|Investigating active liquid crystals using an immersed deformable body
|-
|-
|Oct. 18
|Oct 23
|Ohm
|
|
|''Faculty Meeting''
|-
|-
|Oct. 25
|Oct 30
|[https://stuart.iit.edu/faculty/matthew-dixon Matthew Dixon]? (IIT)
|Thiffeault
|
|<s>Maxey-Riley equation for active particles</s> Time-dependent reciprocal theorem
|-
|-
|Nov. 1
|Nov 6
|
|–
|
|
|-
|-
|Nov. 8
|Nov 13
|
|Ahmad Zaid Abassi
|
(UC Berkeley)
|Finite-depth standing water waves: theory, computational algorithms, and rational approximations
|-
|-
|Nov. 15
|Nov 20
|
|Jingyi Li
|''Faculty Meeting''
|Arrested development and traveling waves of active suspensions in nematic liquid crystals
|-
|-
|Nov. 22
|Nov 27
|''Thanksgiving''
|
|
|''Thanksgiving Break''
|-
|-
|Nov. 29
|Dec 4
|
|Thiffeault
|
|
|-
|-
|Dec. 6
|
|''Faculty Meeting''
|-
|Dec. 13
|
|''Faculty Meeting''
|}
|}


== Spring 2018  ==
== Abstracts ==
 
 
{| cellpadding="8"
=== '''Ahmad Abassi, University of California, Berkeley''' ===
!align="left" | date
Title: Finite-depth standing water waves: theory, computational algorithms, and rational approximations
!align="left" | speaker
 
!align="left" | title
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).
|-
| Jan. 25
|Saverio
|Self-straining of active suspensions and a no-velocity theorem
|-
| Feb. 1
|Thomas Fai
|Lubrication theory and some related research
|-
| Feb. 8
|Jean-Luc
|Rotor-router walks
|-
| Feb. 15
|''Faculty Meeting''
|
|-
| Feb. 22
|Gage
|Winding of Brownian motion with 3 slits
|-
| Mar. 1
|Zach
|Corbin et al., [https://arxiv.org/abs/1712.05778 Impact-induced acceleration by obstacles]
|-
| Mar. 8
|''Faculty Meeting''
|
|-
| Mar. 15
|Tom
|Buehrle et al., Concentration fluctuations induced by randomly fluctuating sources
|-
| Mar. 22
|John
|Tenenbaum et al., [http://web.mit.edu/cocosci/Papers/sci_reprint.pdf A global geometric framework for nonlinear dimensionality reduction]
|-
| Mar. 29
|''Spring recess''
|
|-
| Apr. 5
|John Baez
|Colloquium in room 911: ''Monoidal categories of networks''
|-
| Apr. 12
|''Faculty meeting''
|
|-
| Apr. 19
|Faustine
|Ernst, Ziff and Hendriks, [https://deepblue.lib.umich.edu/bitstream/handle/2027.42/24995/0000422.pdf?sequence=1&isAllowed=y Coagulation processes with a phase transition]
|-
| Apr. 26
|Wil
|Chen and Chen, [https://www.sciencedirect.com/science/article/pii/S0020768315001377 Deformation and vibration of a spiral spring]
|-
| May 3
|''Faculty Meeting''
|
|}


== 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/Fall2017|Fall 2017]]
*[[Applied/Physical_Applied_Math/Spring2017|Spring 2017]]
*[[Applied/Physical_Applied_Math/Spring2017|Spring 2017]]

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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