High-accurate Numerical Simulation for Vortex Flow Over a Slender Missile at High Angle of Attack

Accurate simulation of asymmetrical vortical flow over slender missiles at high angles of attack is crucial for predicting the aerodynamic characteristics of missiles. However, numerical solution for vortices is very sensitive to numerical dissipation. A novel high-order scheme (WENO-K) proposed by our research group can effectively reduce numerical dissipation and capture vortex structures more accurately compared to classical WENO schemes. In this paper, a new numerical method combining 5^th WENO-K and IDDES is developed to accurately solve the supersonic unsteady viscous flow dominated by complex asymmetrical vortices over the Sparrow III type missile, and the mechanism of how asymmetrical vortices affect aerodynamic forces of the missile is revealed.