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Old   May 8, 2009, 19:43
Default Determine pressure
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Michal
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Hi, I need help I have to determine outlet or inlet pressure in coolant chanel in turbine vane. I have the fallowing parameters on inlet: diameter, Reynolds number, mass flow rate and avarage temperature. The fluid is air ideal gas. I need this to add bundary conditions in CFX. If somebody know how to do it, or what anoter condition i can set please help.

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Old   May 10, 2009, 21:45
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Glenn Horrocks
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Hi,

This is a pretty basic question - have you done the tutorial examples, especially the ones on turbomachinery which are supplied with CFX? They are the best place to start.

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Old   May 11, 2009, 19:22
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Michal
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Hi Glenn, and thanks for replying.

I know that it’s basic question but I’m new In cfd and it is my first project. I would like to set mass flow at inlet boundary conditions and static pressure at outlet but I cant calculate this pressure. In my work I use data from this experiment http://gltrs.grc.nasa.gov/reports/1983/CR-168015.pdf for Mark 2 profile.

If it possible give me some directions how to do this, or what other boundary conditions I can set, having only those data.

Regards
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Old   May 11, 2009, 21:28
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Hi,

As I said, the place to start is the CFX tutorials.

For incompressible flows the outlet pressure is usually set to zero and pressure is offset by that amount. I have not had time to look at your document at the moment so I can't give detailed comments.

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Old   May 12, 2009, 03:54
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Hi,

Thanks for your advice and i start doing those tutorials.

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