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Stochastic and Multiscale Modeling and Computation Seminar

The seminar organizer (as of Fall 2017) is Min-Jhe Lu (email: mlu19_AT_hawk_DOT_iit_DOT_edu).

Upcoming Seminars

Organizational notes: 
The seminars are usually Mondays and Fridays 10:00 - 11:00 AM, Wednesdays 5:00 - 6:00 PM

Xiang Xu - Department of Mathematics & Statistics, Old Dominion University
Oct 15, 2019 - 10:00am to 11:00am
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 122
We study a gradient flow generated by the Landau-de Gennes free energy that describes nematic liquid crystal configurations in the Q-tensor space. This free energy density functional is composed of three quadratic terms as the elastic energy density part, and a singular potential in the bulk part... read more
Tue.
Oct 15

Stochastic and Multiscale Modeling and Computation Seminar Archive

Yuan-Nan Young - Department of Mathematical Sciences, New Jersey Institute of Technology
Oct 14, 2019 - 10:00am to 11:00am
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 034
In this talk I will present recent progress in modeling and simulating the collective hydrodynamics of (1) amphiphiles (such as lipid macromolecules) and (2) drops of active fluids. In (1) I will describe how hydrophobic interactions between amphiphiles in solvents dominate their collective... read more
Mon.
Oct 14
Tengfei Zhang - School of Mathematics and Physics, China University in Geosciences
Oct 9, 2019 - 5:00pm to 6:00pm
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 025
In this talk, we will first employ the energetic variational method to derive a micro-macro model for compressible polymeric fluids. This model is a coupling of isentropic compressible Navier-Stokes equations with a nonlinear Fokker-Planck equation. We then proved the global in time existence of... read more
Wed.
Oct 9
Dexuan Xie - Department of Mathematical Sciences, University of Wisconsin-Milwaukee
Oct 3, 2019 - 4:00pm to 5:00pm
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 121
Many ion channel models have been developed by using either the Poisson-Boltzmann (PB) equation or a system of Poisson–Nernst–Planck (PNP) equations through considering volume-exclusion entropy effects, hard sphere interactions, Leonard Jones' interactions, and electric charge correlations, etc.... read more
Thu.
Oct 3
Sohail Murad - Department of Chemical and Biological Engineering, Illinois Institute of Technology
Sep 30, 2019 - 10:00am to 11:00am
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 034
Molecular simulations using a method based on molecular dynamics have been used to study a wide variety of separation processes involving ions. These include reverse osmosis separation of brine, and selective permeation of ions in ion exchange membranes. These separations are fundamentally... read more
Mon.
Sep 30
Cheng Yu - Department of Mathematics, University of Florida
Sep 27, 2019 - 10:00am to 11:00am
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 025
In this talk, I will talk about the existence of global weak solutions for the compressible Navier-Stokes equations, in particular, the viscosity coefficients depend on the density. Our main contribution is to further develop renormalized techniques so that the Mellet-Vasseur type inequality is not... read more
Fri.
Sep 27
Chun Liu - Department of Applied Mathematics, Illinois Institute of Technology
Sep 25, 2019 - 5:00pm to 6:00pm
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 025
In this talk, I will introduce an energetic variational approaches for chemical reaction dynamics. The advantage is to couple this with the mechanical motions, such as diffusion, in a physical consistent framework. In particular, I will introduce the temperature effects and dynamic boundary... read more
Wed.
Sep 25
Davit Potoyan - Department of Chemistry, Iowa State University
Sep 19, 2019 - 5:00pm to 6:00pm
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 025
Functional compartmentalization is a ubiquitous hallmark of life; by segregating bio-molecules and their interactions cells achieve specialization and improved efficiency of many of their functions. In eukaryotic cells, the genetic material is known to be separated from the cytoplasm by the nuclear... read more
Thu.
Sep 19
Noel J. Walkington - Department of Mathematical Sciences, Carnegie Mellon University
Sep 16, 2019 - 10:00am to 11:00am
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 034
This talk will review models and structural properties of the equations used to model geophysical flows which involve multiple components undergoing phase transitions. Simulations of these problems only model the gross properties of these flows since a precise description of the physical system is... read more
Mon.
Sep 16
Andrea Giorgini - Department of Mathematics, Indiana University
Sep 13, 2019 - 10:00am to 11:00am
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 025
Diffuse Interface models are nowadays widely employed in Fluid Dynamics to model the free interface motion of mixtures of two different fluids or phases. In this approach, the interface is represented as the zero level set of a label function (or difference of fluid concentrations), whose values \(... read more
Fri.
Sep 13
Qing Cheng - Department of Applied Mathematics, Illinois Institute of Technology
Sep 11, 2019 - 5:00pm to 6:00pm
College of Science, Applied Mathematics - Seminar - Rettaliata Engineering Center, Room 025
We develop a Lagrangian numerical method (the flow dynamic approach (FDA)), based on the Energetic Variational Approach (EnVarA), motivated by Rayleigh and Onsager. The method posses advantages in capturing the sharp interface, comparing with numerical methods in Eulerian coordinates. As... read more
Wed.
Sep 11

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