Mathematics Department Seminar

 
 

Computational and Applied Mathematics Seminar

Fall 2017

Mondays at 4:10 p.m. in 401 Carver


The CAM Seminar is organized in the ISU Mathematics Department. It brings speakers from inside and outside of ISU, raising issues and exchanging ideas on topics of current interest in the are of computational and applied mathematics.

Archive of earlier seminars

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8/28 Organization meeting


9/04 Labor Day

9/11

 

Magnetohydrodynamic (MHD) flow in closed channels.

Monalisa Muns

Iowa State University

Abstract: Channel flow of electrically charged fluid in presence of an external magnetic field is known as MHD flow. This has applications in metallurgy (liquid metal flow), MRI study of blood flow through vessels, microfluidic devices and so on. I shall be talking about how an external magnetic field affects the channel flow with wall constrictions/dilations of length Re^(1/7) and its properties.

 

9/20 Wednesday 2:10--3:00pm, Carver 401

Scalings and saturation in infinite-dimensional control problems with applications to stochastic partial differential equations

David Herzog
Iowa State University

 

Abstract: We discuss scaling methods which can be used to solve low mode control problems for nonlinear partial differential equations. These methods lead naturally to a infinite-dimensional generalization of the notion of saturation, originally due to Jurdjevic and Kupka in the finite-dimensional setting of ODEs. The methods will be highlighted by applying them to specific equations, including reaction-diffusion equations, the 2d/3d Euler/Navier-Stokes equations and the 2d Boussinesq equations. Applications to support properties of the laws solving randomly-forced versions of each of these equations will be noted.

 

9/25

Multiscale simulation of wave-matter interactions

Stongting Luo

Iowa State Universtiy

Abstract: I will discuss some multiscale problems rising from wave-matter interactions. Depending on the wavelength and size of the matter, different models are used, and appropriate schemes must be designed to capture the interactions faithfully. I will briefly talk about some problems and numerical methods for high-frequency wave propagation, kinetic models and nano optics.

 


10/02 TBA

 

10/09
Luis Duque
The University of Texas at Austin.