Shadow Wall

Student_GF · June 28, 2016, 16:00

Hello all,

I have a question regarding shadow walls. I am confused on why they are created? I am also confused on why a flow cannot pass the shadow wall into another fluid region.

Does anyone know why?

Thank you

diamondx · June 28, 2016, 18:58

Fluent's documentation explains it very well

https://www.sharcnet.ca/Software/Flu...ug/node253.htm

Student_GF · June 29, 2016, 09:55

Hi diamondx,

Thank you for the link. I have another question regarding shadow walls that I was wondering you may help me with. The shadow wall is created between two fluid zones, one porous and the other is not. The fluid flow from the nonporous zone is not able to penetrate when there is this shadow wall. Do you know why?

nvarma · June 29, 2016, 15:38

just don't name the wall between fluid and porous zone when you create the mesh. name both as "fluid"

Or you could change the wall to "interior" and the wall will disappear.

As obvious as it is, there will be no flow across a wall.

June 28, 2016, 16:00	Shadow Wall	#1
Student_GF New Member Join Date: Nov 2015 Posts: 16 Rep Power: 10	Hello all, I have a question regarding shadow walls. I am confused on why they are created? I am also confused on why a flow cannot pass the shadow wall into another fluid region. Does anyone know why? Thank you

June 28, 2016, 18:58		#2
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 28	Fluent's documentation explains it very well https://www.sharcnet.ca/Software/Flu...ug/node253.htm __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

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June 29, 2016, 09:55		#3
Student_GF New Member Join Date: Nov 2015 Posts: 16 Rep Power: 10	Hi diamondx, Thank you for the link. I have another question regarding shadow walls that I was wondering you may help me with. The shadow wall is created between two fluid zones, one porous and the other is not. The fluid flow from the nonporous zone is not able to penetrate when there is this shadow wall. Do you know why?

June 29, 2016, 15:38		#4
nvarma Senior Member nm Join Date: Mar 2013 Posts: 100 Rep Power: 13	just don't name the wall between fluid and porous zone when you create the mesh. name both as "fluid" Or you could change the wall to "interior" and the wall will disappear. As obvious as it is, there will be no flow across a wall.