SIMULATION OF HIGHLY LOADED GAS–SOLID TWO-PHASE FLOWS BY COMBINING A CELLULAR AUTOMATA FOR THE PARTICLES WITH A LATTICE BOLTZMANN FLOW SOLVER

Abstract

Chemical reactors with highly loaded gas–solid flows — such as one might find in fluidized beds and riser-downer systems — play an increasingly important role in chemical engineering. Experimental measurements and numerical simulations with standard techniques are rather limited due to the high volume fraction of the particulate solid phase. Therefore, in this paper a completely different simulation approach based on a cellular automata–like description of a simple particle–fluid micro–world is presented which can provide a new entry point for more reliable simulations.