LS-DYNA R7: Recent developments, application areas and validation results of the compressible fluid solver (CESE) specialized in high speed flows.

摘要

LS-DYNA version R7 includes CFD solvers for both compressible and incompressible flows. The compressible flow solver is based on the CESE method, a novel numerical method for solving conservation laws. It has many nontraditional features such as space-time conservation, second order accuracy for flow variables and a powerful shock wave capturing strategy. This paper will focus on some advanced features of the solver namely its FSI capabilities. Several potential industrial applications will be presented such as airbag openings, piston type applications and turbomachines. Some results on high speed supersonic flows will also be presented for illustration and discussion purposes.