Mesh motion or frame motion????

Tarin · March 24, 2014, 03:13

I am trying to simulate a pipe rotating around de x axis (see, please, the drawing attached). I have defined "A" as a mass flow inlet and "B" as pressure oulet = 0

Can anyone tell me if I have to select mesh motion or frame motion in cell zone condition? And which is the difference between them?

(I have tried both and they give differente solutions concerning to generated pressure)

Thank you!!!

Rochak · July 30, 2020, 13:49

Mesh Motion is used when when it's important to capture the unsteadiness in the flow,this approach comes under Sliding/Dynamic Mesh , Whereas the frame motion is used in SRF/MRF approach where unsteadiness is not captured
Dynamic Mesh is computationally more expensive

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
how to set periodic boundary conditions	Ganesh	FLUENT	15	November 18, 2020 06:09
Mesh motion with Translation & Rotation	Doginal	CFX	2	January 12, 2014 06:21
3D Hybrid Mesh Errors	DarrenC	ANSYS Meshing & Geometry	11	August 5, 2013 06:42
incompatibility of frame motion with energy equation activation ?	Rockda	FLUENT	1	April 3, 2012 08:35
Prescribed mesh motion does not correspond to actual motion	rbarrett	CFX	8	June 30, 2011 13:22

July 30, 2020, 13:49		#2
Rochak New Member Join Date: Jul 2020 Posts: 1 Rep Power: 0	Mesh Motion is used when when it's important to capture the unsteadiness in the flow,this approach comes under Sliding/Dynamic Mesh , Whereas the frame motion is used in SRF/MRF approach where unsteadiness is not captured Dynamic Mesh is computationally more expensive