Is it possible to use MRF Approach on Overset Grid.

ozi · April 16, 2023, 16:02

Dear Foamers.

I am curious about is it possible to use MRF approach on overset grld. I am conducting maneuvering simulations on an underwater vehicle. My aim is to perform all simulations on a single grid. For this sake I am using overset mesh. If I need oblique towing I just rotate the mesh. For PMM mechanism I have to oscillate the overset zone. These are not big issue. But when it comes to rotating arm mechanism which rotates the vehicle at a constant angular velocity and turning radius I want to perform the analysis by using MRF approach. But it gives me forces 2 to 3 times of the experimental ones. Do you guys have any suggestions.

Cheers
Ozi

ozi · April 17, 2023, 03:41

Any sugesstion will be appreciated.

ozi · June 23, 2023, 10:04

Still need help.

ozi · August 30, 2023, 14:18

Any comments will be appreciated.

April 16, 2023, 16:02	Is it possible to use MRF Approach on Overset Grid.	#1
ozi New Member Ph.D.(c) Oğuzhan KIRIKBAŞ Join Date: Mar 2017 Location: İstanbul Posts: 17 Rep Power: 9	Dear Foamers. I am curious about is it possible to use MRF approach on overset grld. I am conducting maneuvering simulations on an underwater vehicle. My aim is to perform all simulations on a single grid. For this sake I am using overset mesh. If I need oblique towing I just rotate the mesh. For PMM mechanism I have to oscillate the overset zone. These are not big issue. But when it comes to rotating arm mechanism which rotates the vehicle at a constant angular velocity and turning radius I want to perform the analysis by using MRF approach. But it gives me forces 2 to 3 times of the experimental ones. Do you guys have any suggestions. Cheers Ozi

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April 17, 2023, 03:41		#2
ozi New Member Ph.D.(c) Oğuzhan KIRIKBAŞ Join Date: Mar 2017 Location: İstanbul Posts: 17 Rep Power: 9	Any sugesstion will be appreciated.

June 23, 2023, 10:04		#3
ozi New Member Ph.D.(c) Oğuzhan KIRIKBAŞ Join Date: Mar 2017 Location: İstanbul Posts: 17 Rep Power: 9	Still need help.

August 30, 2023, 14:18		#4
ozi New Member Ph.D.(c) Oğuzhan KIRIKBAŞ Join Date: Mar 2017 Location: İstanbul Posts: 17 Rep Power: 9	Any comments will be appreciated.