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September 8, 2015, 10:15 |
Pressure high peak at inlet
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#1 |
New Member
andrea
Join Date: Jun 2015
Posts: 2
Rep Power: 0 |
Hi all!!
I´m currently trying to solve a 2D domain, which consists of a pipe with some profiles inside of it, as it is shown in the image: The top and botton boundaries are walls. The BC for the inlet are freestream ( 0.011 0 0 ) for U and freestreamPressure for p. For the outlet BC zeroGradient has been imposed for both p und U. I´m using simpleFoam solver. When I look at pressure contours in paraview, I realize that at the upper and bottom edges of the inlet, there is a peak in pressure. I don´t see very well why this is happening; I have tried some other BC for the inlet but same result arises. I am quite new, so any clue or possible reason to explain why this happens would be more than welcome The pressure peak can be seen in image Thanks in advance! |
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September 22, 2015, 15:20 |
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#2 |
Senior Member
Joachim Herb
Join Date: Sep 2010
Posts: 650
Rep Power: 21 |
This might be cause be the constant value on the inlet boundary condition for U which conflicts with the wall layer. Perhaps you could try the fixedMeanFvPatchField boundary condition: https://github.com/OpenFOAM/OpenFOAM...FvPatchField.H
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