The Influence of Spatial Schemes and Flux Limiters on Axial Force Coefficients for Vehicles in Transonic Speed

摘要

To justify the simulation accuracy in axial force of an air-breathing vehicle in transonic and subsonic speed, this paper examines the three-dimensional turbulent flows around the vehicle having two rectangular side inlets, which NASA Langley had conducted relevant wind tunnel test in 1983. Our primary concern is to clarify the zero angle drag calibration from the view of experiment and therefore appraising the evaluation of external axial force, we also address the result of axial force at zero angle of attack resulting from the choose of spatial limiter. The commercial code, CFD-FASTRAN, is used to solve the full Navier-Stokes equations with high Reynolds number k-s turbulence model (with wall functions). Flows at zero angle of attack condition have been tested with Mach number 0.6, 0.8 and 0.95. Flow with free stream Mach number 0.8 has been simulated at different angles of attack. All cases deal with Reynolds number between 8.5～10 ×10{sup}6/m.