SMOOTHED PARTICLE HYDRODYNAMICS SIMULATION OF SKI JUMP FLOW

Abstract

The density re-initialization technique and the wall model are introduced to the weakly compressible smoothed hydrodynamics (WCSPH) to improve the prediction of high speed turbulent flows by large eddy simulation. The improved method is examined by comparing with the experimental results of flow past ski-jump flip bucket and the corresponding calculation results of existing method. The calculated nappe flow trajectory and the spread of the flow agree well with the experiment and better than the existing Finite Element Method. It is due to the improved representation of the wall shear stress and the near wall near the flip bucket. The density re-initialization contributed to the stable distribution of the density and the pressure.