Frictional losses at wall

May 6, 2008, 10:47

Hi,

I have an elbow tube with some amount of flow separation in it. I m trying to break down the losses. Hw do I calculate the frictional losses/pressure loss due to friction at the wall using CFX Post?

Thanks, Sans

May 23, 2008, 04:09

Sans,

I think it is not possible in a straight way , so far as I know. But if you can formulate a function using CEL expressions, and that function will be calculated for every iteration, then I think it could be possible but I am not sure. Other wise you can calculate the overall pressure drop only, not pressure drop because of friction losses only.

Regards Mehul

May 6, 2008, 10:47	Frictional losses at wall	#1
Sans Guest Posts: n/a	Hi, I have an elbow tube with some amount of flow separation in it. I m trying to break down the losses. Hw do I calculate the frictional losses/pressure loss due to friction at the wall using CFX Post? Thanks, Sans

May 23, 2008, 04:09	Re: Frictional losses at wall	#2
Mehul Guest Posts: n/a	Sans, I think it is not possible in a straight way , so far as I know. But if you can formulate a function using CEL expressions, and that function will be calculated for every iteration, then I think it could be possible but I am not sure. Other wise you can calculate the overall pressure drop only, not pressure drop because of friction losses only. Regards Mehul

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