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CFD of Plasma Spray nozzle

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Old   August 5, 2010, 10:09
Default CFD of Plasma Spray nozzle
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paul
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Hi all,

I am modeling the flow of Argon gas in the arc chamber of a Plasma Spray gun, and exiting the nozzle into the atmospher. I am having trouble simulating the proper flow conditions and obtaianing flow velocities. I am using a 2-D, axisymmetric, Density based, steady solver with a k-e RNG turbulence model and EWT.

I have set the entry B.C. as velocity inlet, but cannot seem to set my desired pressure. I know my inlet velocity is 13.4 m/s, but a high pressure at this inlet should give me high velocities at the nozzle exit. I only get around 27m/s at the exit.

If anyone can help in this matter i would appreciate it alot.

Thanks.
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