High-Order Implicit Large-eddy Simulations of Flow around a Projectile using PyFR

Abstract

In this talk I will demonstrate how PyFR can be applied to simulate three challenging unsteady flow around projectile. The first problem is subsonic flow after projectile base, which yields a significant portion of drag of projectile. The numerical results are compared with the experiments in terms of aerodynamic drag, pressure distribution on base and separation bubble size. The second problem is to simulate so-called 'phantom-yaw', asymmetric shedding of vortices at high angle of attack. The distinct instability modes, which were witnessed in the experiments, are reproduced in simulations and flow structures of each mode are compared. The last problem is laminar separation bubble on Low-Reynolds Number airfoil. The numerical results are compared with the experiments in terms of aerodynamic forces and transition of separation bubbles along the angle of attack is witnessed.