Variable Inlet Flow Direction

Baggos53 · July 28, 2021, 13:52

Hello Everyone

I am running a simulation where the inlet region is a rectangular and I would like to know if I can have the inlet flow direction to vary along the height of the rectangular. More specifically the bottom side of the rectangular should have a flow angle of 60 degrees while the top side 50 degrees. The flow angle should change gradually from 60 and reaching the top with 50 degrees. Can someone give me some advice on how I can perform such a condition ?

Thank you !!

piu58 · July 28, 2021, 14:19

If you make the inlet form different blocks you have several inlet faces. Every of them may have another b.c.
That is the simplest way.

LuckyTran · July 28, 2021, 16:03

Also depends what software you are using...

How about a .csv table of x,y,z components at different positions that you generate beforehand, load this into whatever software you are using, and use that as the BC?

Or directly program the functional relationship and use that.

July 28, 2021, 13:52	Variable Inlet Flow Direction	#1
Baggos53 New Member Vangelis Join Date: Apr 2021 Posts: 3 Rep Power: 5	Hello Everyone I am running a simulation where the inlet region is a rectangular and I would like to know if I can have the inlet flow direction to vary along the height of the rectangular. More specifically the bottom side of the rectangular should have a flow angle of 60 degrees while the top side 50 degrees. The flow angle should change gradually from 60 and reaching the top with 50 degrees. Can someone give me some advice on how I can perform such a condition ? Thank you !!

July 28, 2021, 14:19		#2
piu58 Senior Member Uwe Pilz Join Date: Feb 2017 Location: Leipzig, Germany Posts: 744 Rep Power: 15	If you make the inlet form different blocks you have several inlet faces. Every of them may have another b.c. That is the simplest way. __________________ Uwe Pilz -- Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950)

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July 28, 2021, 16:03		#3
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,674 Rep Power: 66	Also depends what software you are using... How about a .csv table of x,y,z components at different positions that you generate beforehand, load this into whatever software you are using, and use that as the BC? Or directly program the functional relationship and use that.