Wednesday, October 7, 2026

Time: 16:10-17:00

venue: Mathematics Building Room 527

Speaker: Prof. Chien-Chang Yen (Department of Mathematics, Fu Jen Catholic University)

Title: The behavior of sonic and thermal critical points in hydrodynamical escape problems

Abstract:

The atmosphere of the earth is significant for the life and the evolution of its structure is also to be too complicated to understand.

The hydrodynamical escape problem (HEP) involved effects of gravity, heat and coduction has been used to study the formation machenism for atmospheres of planets. There two bifurcation points, the sonic point and thermal critical points, are revealed in the HEP. In this talk, we wants to explore the behavior of these two critical points from theoretical and numerical approaches.