TITLE:
A Comparison of the Ghost Cell Technique for Front Tracking Method
AUTHORS:
Donghong Wang, Yanqing Wang, Ning Zhao
KEYWORDS:
Compressible Multifluid; Front Tracking Method; Riemann Problem
JOURNAL NAME:
Open Journal of Fluid Dynamics,
Vol.3 No.3,
September
18,
2013
ABSTRACT:
The treatment of moving material
interfaces and their vicinity is very important for compressible multifluids.
In this paper, we propose one type of ghost fluid method based on Riemann
solutions for front tracking method. The accuracy of the interface boundary
condition is discussed for the gas-gas
Riemann problem. It is shown that the solution of the ghost fluid method
approximates the exact solution to second-order accuracy in the sense of
comparing to the exact solution of a Riemann problem at the material interface.
Numerical examples suggest that the present scheme is able to handle
multifluids problems with large density differences and has the property of
reduced conservation error.