Particulate Stresses in Dense Disperse Flow

摘要: We review and discuss the progress as achieved to date in matter of describing particulate stresses different origins that occur concentrated suspensions solid particles. A few physical mechanisms generating such are explicitly recognized. First, these appear a result direct momentum transport over transient network particles separated by thin lubricating films intervening fluid, so part apparent suspension viscosity must be attributed its dispersed phase. Second, normal tangential originate because random fluctuations caused (1) their pair interactions brought closer together pass one another mean shear flow, (2) relative fluid flow an external body force field they interact with concentrations, (3) macroscopic patterns, bubbles rising fluidized beds produce system Reynolds-like