turbulent boundary condition for inlet half sphere shape -- CFD Online Discussion Forums

January 7, 2014, 11:09	turbulent boundary condition for inlet half sphere shape	#1
asal Senior Member Astio Lamar Join Date: May 2012 Location: Pipe Posts: 186 Rep Power: 13	Hello! I want to simulate a case that inlet is half sphere (3-D). For this case I need to assign turbulent boundary condition (Turbulence intensity and Hydroponic diameter or Length scale or others.) The problem is since the inlet is three dimensional, I cannot calculate hydroponic diameter from the well-known equation 4A/P. I do not know how to calculate periphery in three dimensional. Has anybody here any solution to this problem? Thanks.

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