too dense mesh deteriorates the simulation -- CFD Online Discussion Forums

June 29, 2015, 20:38	too dense mesh deteriorates the simulation	#1
kkpal Senior Member Join Date: Jan 2013 Posts: 134 Rep Power: 13	hi, I'm using pimpleFoam to simulate the flow around a circular cylinder. I found that many times that if a dense mesh is used for a low Reynolds number simulation, say Re=100, the simulation is not physically correct(in terms of the drag or lift force coefficients). However, if I maintain the same mesh and raise the reynolds number to like 1000, the simulation seems to go well. does someone else also have the same experience with me?

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