Speaker: Andreas Meister, University of Kassel
Title: Flow Fields at all Speeds: Analysis, Numerics and Simulation
We will present a comprehensive study of a finite volume method for inviscid and viscous flow fields at high and
low speeds. Thereby, the results of a formal single as well as multiple scale asymptotic low Mach number analysis are used to extend the validity of the numerical method from
the simulation of compressible flow fields at transonic as well as supersonic speed to the low Mach number regime.
After a brief repetition of
an asymptotic analysis in the continuous context we present a finite
volume approximation of the governing equations. To overcome
the failure of the usual
numerical method in the low Mach number regime we combine the numerical
flux function with a preconditioned formulation. Both, a
wide variety of trans-, super-, hyper-, and subsonic realistic test cases and a
formal discrete asymptotic single scale analysis are employed in order
to prove the validity of
the derived numerical method from hypersonic to low Mach number fluid flow.
Time: Friday, December 6 2013, 1:30-2:30 p.m.
Place: Exploratory Hall (formerly S & T II), Room 4106
Department of Mathematical Sciences
George Mason University
4400 University Drive, MS 3F2
Fairfax, VA 22030-4444
Tel. 703-993-1460, Fax. 703-993-1491