Investigation of vortex-particle interaction in mixifng layer using two-way coupling vortex method

摘要

A two-way momentum coupling method in the framework of Vortex-in-Cell method is proposed and used to simulate a particle-laden temporally developing mixing layer. The influence of particles on the carrier fluid is considered by the change of circulation of discrete vortex elements. Results show that under the presence of particles, the mixing layer retains its self-similarity. Particles reduce the growth of momentum thickness of the mixifng layer with time. Particles also attenuate turbulence of the fluid and the level of attenuation increases with particle mass loading ratio. Under the same mass loading ratio, particles with St=O(l) lead to greater attenuation of turbulence when compared with particles with St 1 and St 1.