Development of Parallel LES and Numerical Simulation of Hypersonic Turbulent Flows
The theoretical model of LES for hypersonic turbulent flows was deduced whose concept is more scientific and accurate. The governing equations for LES are obtained by filtering the N-S equations with standard (non-Favre filtering) spatial filter function, a nonlinear sub-grid scale(SGS) model is developed from the Caylay-Hamilton theory. It is shown to be the nonlinearly extension of the traditional compressible model such as traditional dynamic Smagorinsky model. The approach is closer to the physics of the problem, because the information of the density is not lost. The parameter of model is dynamically computed from the local physical variable by the least square method. The method is applied to the numerical simulation of the hypersonic flow over complex configuration such as a double-ellipsoid. Comparing with the existent experimental and numerical results indicates that those models can be applied to the numerical simulations of aerodynamics/ aerothermodynamics for hypersonic turbulent flows.
LES supersonic (hypersonic) parallel computing aerodynamics/aerothermodynamics
Zou Hui Li Peng
National Laboratory for CFD/Key Laboratory of Fluid Mechanics, Ministry of Education,Beijing University of Aeronautics and Astronautics, Beijing 100191, China
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
319-322
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）