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Flow Over a cylinder: Properties not conserved |
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July 23, 2010, 10:44 |
Flow Over a cylinder: Properties not conserved
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jeff osborne
Join Date: Mar 2010
Posts: 108
Rep Power: 16 |
Hello all,
I am trying to simulate flow over a cylinder for a validation as I am new to CFD. I am simulating at a Reynolds number of 150. Essentially what happens is everything is going fine, and then after a certain amount of time, all the flow properties (U and p in this case) skyrocket and the simulation crashes. I have attached a few pictures of the simulation that may help explain what is happening. Below is also a printout of my U and p files respectively: Velocity File: dimensions [0 1 -1 0 0 0 0]; internalField uniform (11.76e-4 0 0); //Re=150 for Air boundaryField { inlet { type fixedValue; value uniform (11.76e-4 0 0); } backOutlet { type zeroGradient; } cylinder { type fixedValue; value uniform (0 0 0); } frontAndBack { type empty; } topOutlet { type fixedValue; value uniform (11.76e-4 0 0); } bottomOutlet { type fixedValue; value uniform (11.76e-4 0 0); } Pressure File: dimensions [0 2 -2 0 0 0 0]; internalField uniform 0; boundaryField { inlet { type fixedValue; value uniform 0; } backOutlet { type zeroGradient; } cylinder { type zeroGradient; } frontAndBack { type empty; } topOutlet { type fixedValue; value uniform 0; } bottomOutlet { type fixedValue; value uniform 0; } |
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