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Old   July 16, 2014, 11:47
Default jetflow
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what is the best turbulence model in jetflow simulation?
the air(ideal gas) is compressible and i used the velocity inlet(velocity=150m/s) and pressure outlet as the paper that im trying to validate mentioned...the goal is acoustic analysis..
this paper used sst kw model ....but when i use it the acoustic pressure is different from what is in the paper...
i used all of the models and i got different answers

in k e standard=there is no swirl in the velocity contours and acoustic pressure is between -40 to 40

in k e Rng and realiziable=there is a swirl in the velocity contour and acoustic pressure is between -600 to 600

in k w sst=is like Rng and acoustic pressure is between -800 to 800

which one is right?
the acoustic pressure in the paper is oscillating between -80 to 80

i hope some one could help me..
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Old   July 17, 2014, 05:56
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Compare with experimental to choose the right model
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