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Is there a way to find a correct "spacing"?

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Old   August 8, 2013, 17:46
Talking Is there a way to find a correct "spacing"?
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Jordi P.
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Hello!

I'm meshing a cross flow heat exchanger and I don't know how to define the correct spacing near the wall. Is there some formula to find this correct spacing?. When I say "correct" I mean the wall Yplus be less than 1.

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Old   August 12, 2013, 06:25
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Fateme Sh
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you can calculate the boundary layer first row height regarding to the flow condition you have with this program that NASA provides:

http://geolab.larc.nasa.gov/APPS/YPlus/
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Old   August 15, 2013, 10:05
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Quote:
Originally Posted by aeroAngel View Post
you can calculate the boundary layer first row height regarding to the flow condition you have with this program that NASA provides:

http://geolab.larc.nasa.gov/APPS/YPlus/
Thanks very much! the program works well, but in my case (turbulent flow passing around some cilinders) after calculating with it I've had to do 1 Wall Yplus adapt, but after doing this, Y+ is less than 1. Bye!

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