Applied/Physical Applied Math: Difference between revisions

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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://lists.math.wisc.edu/listinfo/phys_appl_math mailing list website].
*'''Announcements:''' Contact the organizers to join this meeting
 
<br>
 
== Spring 2015 ==


== Fall 2024 ==
 
{| cellpadding="8"
{| cellpadding="8"
!align="left" | date
!align="left" | Date
!align="left" | speaker
!align="left" | Speaker
!align="left" | title/paper
!align="left" | Title
|-
|-
|Jan 22
|Sep 11
|Faculty meeting
|Spagnolie
|
|Growth and buckling of filaments in viscous fluids, Part I
|-
|-
|Jan 29
|Sep 18
|Saverio
|Ohm
|Optimal geometries in liquid crystals
|Rods in flows: from geometry to fluids
|-
|-
|Feb 5
|Sep 25
|Will Mitchell
|–
|Lauga, [http://scitation.aip.org/content/aip/journal/pof2/26/8/10.1063/1.4891969 Locomotion in complex fluids: Integral theorems], Phys. Fluids (2014)
|
|-
|-
|Feb 12
|Oct 2
|Marko
|Arthur Young (Rycroft Group)
|Zhang, Liu and Wang, [http://dx.doi.org/10.1016/j.jfluidstructs.2014.04.002 Koopman Modes, Dynamic Mode Decomposition, and POD], J. Fluids. Struct. (2014)
|Multiphase Taylor–Couette flow transitions
|-
|-
|Feb 19
|Oct 9
|Faculty meeting
|Albritton
|(moved from Feb 12 due to Gloria's absence)
|I thought we already knew everything about shear flows?
|-
|-
|Feb 26
|Oct 16
|Jean-Luc
|Chandler
|On sedimentation and velocity fluctuations
|Investigating active liquid crystals using an immersed deformable body
|-
|-
|Mar 5
|Oct 23
|Peter
|Ohm
|Zhang and Lin, [http://arxiv.org/abs/1411.4361 Stirring by multi-cylinder in potential flow], preprint, (2014).
|-
|Mar 12
|Faculty meeting
|
|
|-
|-
|Mar 19
|Oct 30
|Jim
|Thiffeault
|Turing, [http://www.dna.caltech.edu/courses/cs191/paperscs191/turing.pdf The Chemical Basis of Morphogenesis], Phil. Trans. Roy. Soc. Lond. B (1952).
|<s>Maxey-Riley equation for active particles</s> Time-dependent reciprocal theorem
|-
|-
|Mar 26
|Nov 6
|Lei Li
|–
|Complex analysis for a flapping wing in an inviscid flow
|-
|Apr 2
|Spring break
|
|
|-
|-
|Apr 9
|Nov 13
|Faculty meeting
|Ahmad Zaid Abassi
|
(UC Berkeley)
|Finite-depth standing water waves: theory, computational algorithms, and rational approximations
|-
|-
|Apr 16
|Nov 20
|Tom
|Jingyi Li
|Amato et al., [http://www.sciencedirect.com/science/article/pii/S0005109809000314 Finite-time stability of linear time-varying systems with jumps], Automatica (2009).
|Arrested development and traveling waves of active suspensions in nematic liquid crystals
|-
|-
|Apr 23
|Nov 27
|Colin
|''Thanksgiving''
|Petroff et al., [http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.158102 Fast-moving bacteria self-organize into active two-dimensional crystals of rotating cells], PRL (2015).
|
|-
|Apr 30
|Keith
|Ostoja-Starzewski and Wang, [http://link.springer.com/article/10.1007/BF01178180 Linear elasticity of planar Delaunay networks: random field characterization of effective moduli], Acta Mechanica (1989).
|-
|May 7
|Faculty meeting
|-
|-
|May 14
|Jean-Luc
|I'm back, ya'll (or BBQ)
|}
|}
== 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/Summer2014|Summer 2014]]
*[[Applied/Physical_Applied_Math/Summer2014|Summer 2014]]
*[[Applied/Physical_Applied_Math/Spring2014|Spring 2014]]
*[[Applied/Physical_Applied_Math/Spring2014|Spring 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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