pressure load at inlet

siavash · July 26, 2009, 07:14

Hello every one,
in a transient cfd problem there is a time depndent pressure load at inlet
(like: P=sint).for this boundary condition i used CEL in cfx11.0.
which one of "atstep","ctstep" or "t" should be used as time?
regards,
s.ghassemi.

ghorrocks · July 26, 2009, 07:54

Hi,

This is discussed in the documentation. Look under the CEL Expression Language Reference guide.

Glenn Horrocks

AliTr · July 27, 2009, 02:48

Hi Siavash,

"t" is the time variable based on your initial start time and will increase with physical time steps. then using "t" as the time variable, will do it.

Ali

smn · July 27, 2009, 04:49

hi:
Alitr is right...you should use "t"...
good luck

smn · July 27, 2009, 04:52

hi siavash:
can i ask you about your current work?
what kind of pulsatile problem you are working on?do you work on rigid model or fsi problem???

siavash · July 29, 2009, 08:58

FSI problem.
thanks for your answer.

siavash · July 29, 2009, 08:58

thanks for your reply.

siavash · July 29, 2009, 08:59

thanks for your answer.

July 26, 2009, 07:14	pressure load at inlet	#1
siavash New Member siavash ghassemi Join Date: Jul 2009 Posts: 11 Rep Power: 16	Hello every one, in a transient cfd problem there is a time depndent pressure load at inlet (like: P=sint).for this boundary condition i used CEL in cfx11.0. which one of "atstep","ctstep" or "t" should be used as time? regards, s.ghassemi.

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July 26, 2009, 07:54		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,698 Rep Power: 143	Hi, This is discussed in the documentation. Look under the CEL Expression Language Reference guide. Glenn Horrocks

July 27, 2009, 02:48		#3
AliTr Member Ali Torbaty Join Date: Jul 2009 Location: Sydney, Australia Posts: 72 Rep Power: 16	Hi Siavash, "t" is the time variable based on your initial start time and will increase with physical time steps. then using "t" as the time variable, will do it. Ali

July 27, 2009, 04:49		#4
smn Member Join Date: Jun 2009 Posts: 56 Rep Power: 16	hi: Alitr is right...you should use "t"... good luck

July 27, 2009, 04:52		#5
smn Member Join Date: Jun 2009 Posts: 56 Rep Power: 16	hi siavash: can i ask you about your current work? what kind of pulsatile problem you are working on?do you work on rigid model or fsi problem???

July 29, 2009, 08:58		#6
siavash New Member siavash ghassemi Join Date: Jul 2009 Posts: 11 Rep Power: 16	FSI problem. thanks for your answer.

July 29, 2009, 08:59		#8
siavash New Member siavash ghassemi Join Date: Jul 2009 Posts: 11 Rep Power: 16	thanks for your answer.