三角翼匀速上仰跨声速非定常流场数值模拟

Numerical Simulation of Unsteady Transonic Flows Around a Pitching Delta Wing

用有限差分法求解N－S方程，数值模拟了细长三角翼作匀速上仰运动时的跨声速绕流流场。给出了非定常流场结构，涡破裂特性和非定常升力、阻力特性，研究了上仰运动对动态失速的影响。

The unsteady transonic flows around a pitching slender delta wing are simulated numerically with solving unsteady compressible Navier-Stokes equations by implicit finite difference TVD scheme. The unsteady flowfield structures, the features of vortex-breakdown and the characteristics of unsteady lift/drag are presented. The effect of pitching movement of the wing on dynamic stall is also studied.