Unit normal vector of nearest wall

l_r_mcglashan · August 3, 2009, 06:17

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, 02:40

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, 04:52

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, 17:06

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, 06:17	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, 02:40		#2
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,905 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, 04:52		#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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[Commercial meshers] Fluent3DMeshToFoam	simvun	OpenFOAM Meshing & Mesh Conversion	50	January 19, 2020 15:33
UDF to Access Wall Normal Concentration Gradient	Daniel Tanner	Fluent UDF and Scheme Programming	4	February 18, 2015 14:35
Errors running allwmake in OpenFOAM141dev with WM_COMPILE_OPTION%3ddebug	unoder	OpenFOAM Installation	11	January 30, 2008 20:30
NACA0012 geometry/design software needed	Franny	Main CFD Forum	13	July 7, 2007 15:57
Multicomponent fluid	Andrea	CFX	2	October 11, 2004 05:12

May 13, 2014, 17:06		#4
CHARLES Member CHARLES Join Date: May 2013 Posts: 46 Rep Power: 12	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!