parabolic velocity by groovy bc
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hi
I am going to have parabolic velocity inlet and I have defined it in a pipe which it diameter is 4mm and flow is laminar and this is the definition of fully developed flow in a pipe u z = u max (1 −r2/R2) and this is my definition Code:
{ and the other problem is I have got this velocity profile instead of parabolic one. thanks guys |
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What do you mean with "coordinate is changing"? Even if your mesh is moving r is OK. r is a basically a field of values: one for every face of the patch. So it calcs r for every face separately (was this your concern)? |
yes I got what you explained and thats helpful.thanks for your answer however do you have any idea about the wrong velocity pattern which I have got at inlet ?
it suppose to be parabolic but it is something else |
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coordinates are (3 points of circle at velocity inlet)
(-0.008,0,0.020) (-0.008,0.004,0.024) (-0.008,0,0.028) it means that radius=0.004 |
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Please check whether this is the case specify what "distance" in your diagram means. I will NOT answer anything that arrives in the next couple of hours to give you time to properly think it through |
oh I got it you are right and I find the solution thanks a lot
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thanks it seems that it was other user's problem too however thanks for your protect
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