三维全空间带有Couette流的Keller-Segel方程解的整体存在性

2025.10.30

投稿:邵奋芬部门:理学院浏览次数:

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报告题目 (Title): Global solution of 3-D Keller-Segel model with Couette flow in whole space

(三维全空间带有Couette流的Keller-Segel方程解的整体存在性)

报告人 (Speaker): 王维克教授(上海交通大学)

报告时间 (Time):2025年11月7日(周五)14:00

报告地点 (Place):校本部GJ303

邀请人(Inviter):王宇澄

主办部门:理学院数学系

报告摘要:We introduce both parabolic-elliptic Keller-Segel model and parabolic-parabolic Keller-Segel model in the background of a Couette flow with spatial variables in R^3. It is proved that for both parabolic-elliptic and parabolic-parabolic cases, a Couette flow with a sufficiently large amplitude prevents the blow-up of solutions. Here, we apply Green’s function method to capture the suppression of blow-up and prove the global existence of the solutions.