Pulsatile Flow , time step size

Pavelko · August 29, 2010, 05:06

Hi ,

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

Thanks,
Pavelko.

ghorrocks · August 29, 2010, 22:28

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

Pavelko · August 31, 2010, 09:25

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, 19:23

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, 05:06	Pulsatile Flow , time step size	#1
Pavelko Member Pavelistyj Join Date: Jul 2010 Posts: 42 Rep Power: 16	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 09:33.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Time step size and max iterations per time step	pUl\|	FLUENT	31	October 23, 2020 23:50
Transient simulation not converging	skabilan	OpenFOAM Running, Solving & CFD	14	December 17, 2019 00:12
Navier-Stokes time step size	Martin	Main CFD Forum	2	June 6, 2008 04:38
AMG versus ICCG	msrinath80	OpenFOAM Running, Solving & CFD	2	November 7, 2006 16:15
how to increase time step size?	co2	FLUENT	6	May 17, 2004 08:25

August 29, 2010, 22:28		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	Same as for any other simulation, with a sensitivity study. See http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

August 31, 2010, 09:25		#3
Pavelko Member Pavelistyj Join Date: Jul 2010 Posts: 42 Rep Power: 16	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, 19:23		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	Do the tutorials which come with CFX, go to the CFX Customer page on the ANSYS website and look at the tutorials there.