Title: Partial Differential Equations and Applied Mathematics Seminar (2016.11.3)
Author: CMAC
Date: 2016-10-28 (04:16)

Partial Differential Equations and Applied Mathematics Seminar

Date/Time: Nov 3th, Thurs., 4:00~ 5:00 Pm

Location: Science Building #254, Yonsei University

Speaker: 김화길 박사

Affiliation: 고등과학원

Title: Existence of weak solutions in Wasserstein space for a Keller-Segel model coupled to fluid equations


We consider a coupled system of Keller-Segel type equations and the incompressible Navier-Stokes equations which is describing the dynamics of  oxygen, swimming bacteria, and viscous incompressible fluids. We show the existence of weak solutions of the system. To prove the existence result, we exploit mass transportation theory to understand the equation for the density of bacteria and we formally interpret it as a sum of two flows in the Wasserstein space.