Hi
I have been running a si
Hi
I have been running a simulation for an axisymmetric device with a sudden expansion. The working material is Nitrogen. I have run the simulation using fluent and openfoam. The results that I got from fluent are closer to experimental results that I got from a paper. The boundary conditions that I used in fluent are : 1)entrance : Constant inlet velocity of 1 m/s. 2)Wall: Adiabatic no slip 3)Exit: Constant pressure 1 atm (zero gauge) I am getting a difference in the solutions that I get from both softwares. The solutions are qualitatively similar. The difference lies in the reattachment lengths. Fluent gives me a reattachment length that is closer to the one mentioned in the paper. Am I making a mistake in the boundary conditions in openfoam. The bc's in openFOAM are as follows boundaryField { velocity-inlet-6 { type fixedValue; value uniform (1 0 0); } pressure-outlet-5 { type zeroGradient; } wall-4 { type fixedValue; value uniform (0 0 0); } } Thanks in advance for any help |
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