CFDの大迎角剥離流解析への活用

抄録

Aiming to utilize CFD (Computational Fluid Dynamics) as practical tools for the aerodynamic analysis and design of realistic aircraft, the factors which CFD softwares should possess are pointed out and discussed. On the discussion, in particular, a lot of attention is directed to the applicability of a software to the high angle of attack aerodynamics. Then, one of widely used CFD softwares, “LANS3D,” is validated based on the discussion. Flowfields about a space-plane are simulated using the software at a wide range of the angle of attack. The computational results are compared with wind-tunnel experimental data. They are also examined from the theoretical aspect of aerodynamics. Through the validation, the qualitative reliability of the computational results is confirmed. In addition, the possible usage of CFD as a tool to analyze complex flow phenomena is considered.