Unit normal vector of nearest wall

l_r_mcglashan · August 3, 2009, 07:17

Hello,

I'm looking to implement a wall lubrication force for multiphase flow. For this I need the unit vector normal of the nearest wall.

I found reflectionVector, and that gives the unit vector normal at the wall. Is there a function to give the unit vector normal of the nearest wall?

hjasak · August 4, 2009, 03:40

Yes, this is precisely what you need.

It is used in wall reflection terms in Reynolds stress transport turbulence models.

Enjoy,

Hrv

l_r_mcglashan · August 4, 2009, 05:52

Ah, wallDistReflection! I somehow missed the fact that it inherits from reflectionVector in the class reference. Thank you for the gentle nudge in the right direction.

CHARLES · May 13, 2014, 18:06

Hello,

I know that wallDistReflection is what I need to use but I'm not sure how I would use it. Can you please give me an example of how you would implement it in the code?

Thanks!

August 3, 2009, 07:17	Unit normal vector of nearest wall	#1
l_r_mcglashan Senior Member Laurence R. McGlashan Join Date: Mar 2009 Posts: 370 Rep Power: 23	Hello, I'm looking to implement a wall lubrication force for multiphase flow. For this I need the unit vector normal of the nearest wall. I found reflectionVector, and that gives the unit vector normal at the wall. Is there a function to give the unit vector normal of the nearest wall? __________________ Laurence R. McGlashan :: Website

August 4, 2009, 03:40		#2
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,907 Rep Power: 33	Yes, this is precisely what you need. It is used in wall reflection terms in Reynolds stress transport turbulence models. Enjoy, Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

August 4, 2009, 05:52		#3
l_r_mcglashan Senior Member Laurence R. McGlashan Join Date: Mar 2009 Posts: 370 Rep Power: 23	Ah, wallDistReflection! I somehow missed the fact that it inherits from reflectionVector in the class reference. Thank you for the gentle nudge in the right direction. __________________ Laurence R. McGlashan :: Website

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May 13, 2014, 18:06		#4
CHARLES Member CHARLES Join Date: May 2013 Posts: 46 Rep Power: 13	Hello, I know that wallDistReflection is what I need to use but I'm not sure how I would use it. Can you please give me an example of how you would implement it in the code? Thanks!