Mesh Size for Multiphase Simulation. -- CFD Online Discussion Forums

July 14, 2005, 00:03	Mesh Size for Multiphase Simulation.	#1
Owen Guest Posts: n/a	Hi Guys, Can anyone recommend a method for determining optimal mesh size for a 3D model that will contain solid particles and gas flow (its a FCC). The particle size will be 100 microns. One method would be to start with a large mesh size, say 10cm, run the simulation, then repeat with a smaller mesh size, say 5cm. This could be repeated until the residuals appear to reach a constant limit. Are these realistic starting sizes? It's a large geometry and takes a long time to calculate so any advice could potentially save a lot of time. Any thoughts are welcome. Best regards, Owen

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