Flow simulation through a membrane

sk11 · April 11, 2018, 07:18

Hi All,
I am trying to have a simulation of fishing nets in OpenFOAM and was wondering if there is any way to consider the fishing net as a surface instead of solid cylinders ( Or considering them as a porous membrane with infinitesimal thickness ). Meshing over each twine of large nets will make the simulation computationally expensive. I hope to have a coupled problem and input to the fluid simulation as points (Or Lines representing the Net).
I found MembraneFoam, which was developed to model Forward Osmosis Water treatment. But I could not find a way to do it for fishing nets since the flow was not due to a difference in concentration like how it is in forward osmosis.
Thanks in advance for your valuable advice and inputs.

Sarath

tomf · April 12, 2018, 03:56

Hi,

The porousBafflePressure comes to mind.

This would lead to a pressure jump as an effect of normal velocity, which seems to be what you are aiming for?

Regards,
Tom

sk11 · April 12, 2018, 05:23

This is something interesting to my case. I will look forward to try them. Thanks a lot for your suggestion Tom.

Regards,
Sarath

April 11, 2018, 07:18	Flow simulation through a membrane	#1
sk11 New Member Sarath Join Date: Mar 2017 Location: Spain Posts: 22 Rep Power: 9	Hi All, I am trying to have a simulation of fishing nets in OpenFOAM and was wondering if there is any way to consider the fishing net as a surface instead of solid cylinders ( Or considering them as a porous membrane with infinitesimal thickness ). Meshing over each twine of large nets will make the simulation computationally expensive. I hope to have a coupled problem and input to the fluid simulation as points (Or Lines representing the Net). I found MembraneFoam, which was developed to model Forward Osmosis Water treatment. But I could not find a way to do it for fishing nets since the flow was not due to a difference in concentration like how it is in forward osmosis. Thanks in advance for your valuable advice and inputs. Sarath

April 12, 2018, 03:56		#2
tomf Senior Member Tom Fahner Join Date: Mar 2009 Location: Breda, Netherlands Posts: 647 Rep Power: 32	Hi, The porousBafflePressure comes to mind. This would lead to a pressure jump as an effect of normal velocity, which seems to be what you are aiming for? Regards, Tom sk11 likes this.

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April 12, 2018, 05:23		#3
sk11 New Member Sarath Join Date: Mar 2017 Location: Spain Posts: 22 Rep Power: 9	This is something interesting to my case. I will look forward to try them. Thanks a lot for your suggestion Tom. Regards, Sarath