Mass flow outlet or velocity outlet boundary canditions

amirreza.kachabi · October 17, 2017, 14:09

Hi i have a problem with boundery conditions in Fluent.
I have one inlet and 6 outles and for my outlets i have one pressure and for the others i just have flowrates waveform.
Is this true that i multiply my waveforms to -1 and set them as flow rate inlet or veleocity ?

LuckyTran · October 18, 2017, 09:18

Quote:

Originally Posted by amirreza.kachabi

Is this true that i multiply my waveforms to -1 and set them as flow rate inlet or veleocity ?

You can yes. Hopefully the problem is well-posed in all BC's and you don't get funny results.

amirreza.kachabi · October 18, 2017, 10:01

You mean i can multiply velocity waveform to -1 and set it at velocity inlet in order to use it velocity outlet?
I can't find BC's discussion which you said

October 17, 2017, 14:09	Mass flow outlet or velocity outlet boundary canditions	#1
amirreza.kachabi New Member amirreza Join Date: Sep 2017 Posts: 4 Rep Power: 8	Hi i have a problem with boundery conditions in Fluent. I have one inlet and 6 outles and for my outlets i have one pressure and for the others i just have flowrates waveform. Is this true that i multiply my waveforms to -1 and set them as flow rate inlet or veleocity ?

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October 18, 2017, 10:01		#3
amirreza.kachabi New Member amirreza Join Date: Sep 2017 Posts: 4 Rep Power: 8	You mean i can multiply velocity waveform to -1 and set it at velocity inlet in order to use it velocity outlet? I can't find BC's discussion which you said