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why we need prism layer

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Old   June 12, 2012, 22:35
Default why we need prism layer
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Tao Muse
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I am a new comer in CFD, just beginning to learn a lot of basic theory. I quite don't understand why we need prism layer during meshing? And why orthogonal prismatic cells can more accurately simulate the turbulence and heat transfer Hope someone could help me. Thanks~

Plus, I also donnot know what is Y+. Please help me.
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prism layer

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