Connection of two simulations cases

breznak · May 9, 2022, 07:51

Hello,

(please see the attachment)

I want to use the velocity field at case 1 outlet as the velocity-inlet at case 2 inlet.

For the simulation of only case 1, which boundary condition for outlet should I use? It should be fixed mass flow rate?

Case 1 and Case 2 are geometrically connected, so I think pressure outlet with 0 Pa for case 1 simulation is wrong.

Regards
Breznak

sbaffini · May 10, 2022, 14:28

I generally hate when this happens, but I have to ask you to give use some details about your general problem. What is, actually, the end result that you want to achieve? What is impeding the simulation of both domains together?

This is because the approach you are asking about is wrong in general. So we need to know the larger context to maybe rationalize the wrong answer that works in your case

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
decomposition of multi domain cases for large simulations	romant	OpenFOAM Pre-Processing	6	May 10, 2023 21:27
Unphysical Results of Low-Re Airfoil Simulations	ericthefatguy	SU2	2	February 2, 2015 05:07
Question on running CFX simulations in workbench parameter set table	Anna Tian	CFX	0	September 20, 2014 01:51
Gate valve flow simulations...	nikesh	FloEFD, FloWorks & FloTHERM	5	January 28, 2014 01:31
Standard CFD test cases?	Damon Qualski	Main CFD Forum	1	April 10, 2003 14:10

May 10, 2022, 14:28		#2
sbaffini Senior Member Paolo Lampitella Join Date: Mar 2009 Location: Italy Posts: 2,152 Blog Entries: 29 Rep Power: 39	I generally hate when this happens, but I have to ask you to give use some details about your general problem. What is, actually, the end result that you want to achieve? What is impeding the simulation of both domains together? This is because the approach you are asking about is wrong in general. So we need to know the larger context to maybe rationalize the wrong answer that works in your case