Pulsatile Flow , time step size

Pavelko · August 29, 2010, 04:06

Hi ,

I want to simulate pulsatile flow in rigid tube.
How should I calculate time step size ?

Thanks,
Pavelko.

ghorrocks · August 29, 2010, 21:28

Same as for any other simulation, with a sensitivity study. See http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

Pavelko · August 31, 2010, 08:25

Hi ghorrocks !

I'm completely new in CFD generally and in CFX in particulart . I've used FLUENT before and got pretty good results . But now I need to study FSI using CFX , and I have a lot of problems to begin . Do you have some recomandations for me - where I should begin ? Any useful CFD books ? Anything that will help me ?
I have a CFD course in my University that I will take in next semester , but I don't have any courses on FSI .

Thanks in advance ,
Pavelko.

ghorrocks · August 31, 2010, 18:23

Do the tutorials which come with CFX, go to the CFX Customer page on the ANSYS website and look at the tutorials there.

August 29, 2010, 04:06	Pulsatile Flow , time step size	#1
Pavelko Member Pavelistyj Join Date: Jul 2010 Posts: 42 Rep Power: 15	Hi , I want to simulate pulsatile flow in rigid tube. How should I calculate time step size ? Thanks, Pavelko. Last edited by Pavelko; August 29, 2010 at 08:33.

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August 29, 2010, 21:28		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Same as for any other simulation, with a sensitivity study. See http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

August 31, 2010, 08:25		#3
Pavelko Member Pavelistyj Join Date: Jul 2010 Posts: 42 Rep Power: 15	Hi ghorrocks ! I'm completely new in CFD generally and in CFX in particulart . I've used FLUENT before and got pretty good results . But now I need to study FSI using CFX , and I have a lot of problems to begin . Do you have some recomandations for me - where I should begin ? Any useful CFD books ? Anything that will help me ? I have a CFD course in my University that I will take in next semester , but I don't have any courses on FSI . Thanks in advance , Pavelko.

August 31, 2010, 18:23		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	Do the tutorials which come with CFX, go to the CFX Customer page on the ANSYS website and look at the tutorials there.