Dynamic mesh, negative volume, help! -- CFD Online Discussion Forums

February 23, 2011, 18:19	Dynamic mesh, negative volume, help!	#1
vboris New Member decao.yin@ntnu.no Join Date: Feb 2011 Posts: 4 Rep Power: 15	Hi, I'm using FLUENT v 13. it's a 3D case with a model of a cylinder. the motion of the cylinder is in xy plane. I use smoothing and remeshing strategy. it works well in 2d, but when I change to 3D, after some iterations, the skewness of the first layer mesh outside the rigid moving body get very high, and negative volume appear. Can anybody help me? Thanks a lot

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