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Old   November 25, 2017, 14:21
Default Viscous Model
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Felix Issac Arias Alvarez
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I am trying to do a flow simulation on my plane. So far i have been using the k-epsilon 2 equations because i saw that on a YouTube video. I am completely new to fluent. I am trying to learn or the terminology.

How do i know which viscous model to use? Do i have to do some hand calculations?

I have a delta wing plane with canards at 100 m/s. For mesh i used tetrahedrons, curvature, coarse. My orthogonality quality seems to be 0.099 with a maximum aspect ratio of 30.

Thanks for the help.
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Old   November 29, 2017, 03:20
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Kirill Borodin
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Hello! For such a simulation one should study boundary layer theory. You need a mesh with inflation and prism elements in the boundary layer. How to distribute points in the boundary layer - take y+ value =1 for first layer thickness. For turbulence modeling sst kw is very good, and transition sst can be used for transition modeling (study turbulence and boundary layer theory - you need them)
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Old   December 1, 2017, 21:06
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Thanks for the help. I will try to learn boundary layer thickness. I have a fluids books. Do you have any good books as reference to study? I will take your suggestions.
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Old   December 4, 2017, 06:54
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Hermann Schlichting, Theory of Boundary Layer
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