karthikn21590 |
January 26, 2012 13:59 |
simple problem yet complex error: analysis of flow through diffuser
Hello everyone,
I am new to both CFD and this forum. I tried to simulate turbulent flow through a diffuser. It is a 3D diffuser model. I used K-Eps model with a turbulence intensity of 1%. I used an inlet velocity boundary condition (45m/s)
and an outlet pressure condition (101325 pa). The diffuser exhausts to the atmosphere. The simulation runs fine and the pressure contours are fine. But I m unable to obtain a velocity contour. The velocity over the entire length is 0. Though the legend says that the max velocity is 46m/s, it doesnt reflect on the model. Please help. I m having a tough time with this. Do atmospheric exhausts create problems generally? My professor tried the problem in Star CCM+ and everything is fine. I m experiencing this problem in Fluent
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