中文
Published date:2013-09-24    Provided by:
Guest Speaker:  李杰权 

Time:

2012-06-07  16:00-17:00

Location School of Science Meeting Room
Content: 
              Two—dimensional (2—D) Riemann problems for compressible fluid flows assume the simplest initial state but provide the most fundamental wave configurations, including the reflection of oblique shocks and vortex-shock interaction etc. In this talk I will show many fascinating pictures, based on 2—D Riemann solutions,  to disclose the mysteries of compressible fluid world both through analytical tools (in the form of mathematical theorems) and computational techniques (in the form of simulations). The analysis is based on the characteristic decomposition theory we developed recently, while the simulations are obtained using the generalized Riemann problem (GRP) scheme that is equipped with the most accurate solver in the construction of numerical fluxes by a way of tracking singularities analytically and keeping entropy exactly computed. .

Date Modified:2012-06-07