民用飞机翼身整流粘性绕流数值模拟方法研究

利用CFD方法,针对民用飞机开展翼身整流黏性绕流数值模拟方法研究.采用Roe三阶迎风偏置通量差分分裂方法(FDS)和隐式近似因子分解方法(AF)对三维非定常雷诺平均N-S方程进行数值离散求解,采用多重网格技术加速流场求解收敛过程,并比较了不同湍流对翼身结合处流动分离的模拟能力.计算结果与风洞实验的对比表明,所采用的数值方法可以有效地模拟翼身结合处黏性分离流动,具有一定的工程实用价值.

Exploring Viscous Simulation of Civil Aircraft Wing-body-fairing

The viscous simulation of civil aircraft wing-body-fairing is performed. Third-order upwind-biased implicit flux-difference splitting (FDS) and the implicit approximate factor decomposition (AF) are used to discrete and solve the three dimensional unsteady Reynolds Averaged N-S equations. The computation results match the wind tunnel experiment results well. And the viscous separation flow of wing-body trailing edge conjunction can be effectively simulated. Therefore these algorithms are valuable for the engineering applications.