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CFD Post Expression creation

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Old   July 14, 2015, 13:46
Default CFD Post Expression creation
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Jason
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Im trying to create an expression in Post to extract the boundary layer length (\delta) from my simulation at any point on the surface. I have a simulation of a turbine blade in a rotating reference frame.

So far what I've done has been to define a surface at some distance away from the blade surface to define as my freestream velocity. Following this I need to create an expression to extract the velocity at 99% of this value in the corresponding coordinate system and then to plot a surface of the heights above the surface corresponding to the 99% velocity.

I've attached a plot showing some of my geometry.

Any suggestions as to how to go about doing this? Im new to Post and CEL and I can only seem to do scalar expressions.
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File Type: png hawt_surface.png (54.3 KB, 17 views)
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Old   July 14, 2015, 20:04
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Glenn Horrocks
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This sounds challenging to do in CFD-Post. I would export your data and do it in matlab, python, tecplot or something like that.
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Old   July 15, 2015, 07:21
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Thanks for the suggestion! I was wondering if it was possible in Post but you've confirmed its not.
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