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Dynamic mesh(translational) boundary condition? |
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August 16, 2019, 00:25
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Dynamic mesh(translational) boundary condition?
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Hi,
I am carrying out a simulation with a translational mesh, which is realized by a UDF. This is an incompressible 2D case with turbulence model, and a SIMPLE scheme is chosen. Both spatial and temporal discretization is 2nd-order in accuracy. The boundary conditions are shown on the picture attached. Inside the flow field is an airfoil. Velocity inlet is specified with a ux=U and uy=0. The whole field is sinking in a uniform velocity. The problem is, as shown in the sketched picture, a high pressure region appears in the corner of the flowfield, which is not expected. Does anyone have any idea of this problem? Any suggestion is appretiated. Thanks. 
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August 16, 2019, 00:28
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#2 |
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Here is the picture. |
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August 16, 2019, 02:30
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#3 |
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August 16, 2019, 03:14
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Sketched picture see:
https://photo.weibo.com/2624782587/w...xz4j212x0u0ju6 |
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