WSEAS Transactions on Fluid Mechanics
Print ISSN: 1790-5087, E-ISSN: 2224-347X
Volume 14, 2019
Numerical Simulation of Particle Dispersion in the Developing Supersonic Mixing Layer
Authors: ,
Abstract: The work is devoted to the numerical simulation of a supersonic planar mixing layer of multispecies gases with the particles injection at the interface of flows. It is assumed that the turbulent flow is quasi-two-dimensional, and the solution of the Navier-Stokes equations for multispecies gaseous phase is performed with the 2D-DNS (Direct Numerical Simulations) approach, and the system of ordinary differential equations for solid particles is used. The supersonic multispecies gases effect to the dispersion of particles in the range of is studied in detail. The obtained results show the small particles are captured by the vortices homogeneously while the large particles are accumulated in the periphery of the vortices and along the braid of two adjacent vortices. The dispersion of the particles in supersonic multispecies mixture layer is similar to the trajectory of the particles in subsonic flow: the large particles reacted to the centrifugal action, while the small particles are in a quasi-equilibrium status with the gases. And the number of the particles is larger in the high speed hydrogen than in the air flow.
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Keywords: mixing layer, particle dispersion, multispecies gases, Lagrangian approach, large and small particles
Pages: 79-83
WSEAS Transactions on Fluid Mechanics, ISSN / E-ISSN: 1790-5087 / 2224-347X, Volume 14, 2019, Art. #9