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About translational periodic boundary conditions in Pipe flow

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January 18, 2015, 03:53	About translational periodic boundary conditions in Pipe flow	#1
xq712000 New Member XieQing Join Date: Mar 2013 Location: Capital of Qin Dynasty Posts: 22 Rep Power: 13	In pressure-based solver The periodic conditions can be specified through mass flow rate & pressure gradient However, I don't understand why the pressure gradient can't be really specified I mean when I input an axial gradient then I run the calculation but the results won't show any axial pressure gradient And what If I don't know the pressure gradient and I just want the target mass flow rate then how should I set the axial pressure gradient?

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