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October 25, 2016, 09:58 |
grid independence
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#1 |
Member
Join Date: Sep 2016
Posts: 33
Rep Power: 9 |
Hi!
I'm doing simulation of an humid air laminar flow over a porous plate (2D model), I just specified a velocity(0.13 m/s) and the species concentration at the inlet and at the bottom of the porous plate a fixed concentration. The minium dimensionof the element I choose is 0.025 mm and the dimensions are 150x4,115 mm The problem is that if i refine the mesh I get different values of the velocity for each grid (they vary between 0.136 and 0.144 m/s). I tried to refine the grid doing gradient adaption (based on the velocity gradient) but the results still vary. As solving method I used SIMPLE and pressure based.I tried both inlet inizialization and hybrid....what should I try next? thanks for any answers |
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