An improved PSIcell method for turbulent multiphase flows
Abstract
The rapidly increasing capability of computers has led to the development of numerical models for twophase flows. There are basically two schemes that have been used in literature to model twodimensional subsonic gasparticle or gasdroplet flows; the two fluid methods and the trajectory method. The average equations which treat the conveying gas and the particle cloud as two interactive fluids are the basis of the twofluid method. The other apporach to modelling gas particle flows is the trajectory approach. This approach, called PSI cell model is based on treating the droplets or particles as sources of mass, momentum and energy to the gaseous phase. The presented modifications of the PSIcell method allows the computation, in an economic way, of complicated turbulent polydispersive(polyphase) flows. Some additional terms in the turbulence model equations are introduced in a theoretical manner. The results of numerical calculations point at the dissipative character of turbulent interphase interactions and the considerable dependence of macrostructure of the twophase stream on the structure of turbulence.
 Publication:

Tokyo Symposium on Mechanics for Space Flight
 Pub Date:
 1985
 Bibcode:
 1985tmsf.proc.....D
 Keywords:

 Gas Flow;
 Multiphase Flow;
 Particle In Cell Technique;
 Particle Trajectories;
 Turbulent Flow;
 Computational Fluid Dynamics;
 Continuum Flow;
 Dispersing;
 Turbulence Models;
 Fluid Mechanics and Heat Transfer