Creating a mass point source on a boundary (say, wall) or in Interior (for tracer)

mixer · July 13, 2009, 04:45

Dear OF Users

I would like to create a mass point source at the wall in OF (Just like the CFX has). I do not want to create a hole for inlet on the wall, so i want to create a mass source for steady input of fluid. Is it possible to do so? Similarly, Is it possible to to inject a 'pulse of tracer' at a certain point inside the body. What would the steps be like and what commands would i need? Say commands for identifying the cell, and adding mass source over there either continuous or as a function of time for pulse. How would it finds its way into the equations?

Thanks you very much,
Mandar

mixer · July 14, 2009, 21:12

any ideas on above post

mixer · August 18, 2009, 22:15

any suggestions from OF experts on how to add a mass source at a particular location

roth · August 19, 2009, 09:39

Have you considered groovyBC? i.e. change the gradient of your tracer based on the resolved tracer diffusivity (alphaEff) to maintain a constant tracer flux.

Mike

July 13, 2009, 04:45	Creating a mass point source on a boundary (say, wall) or in Interior (for tracer)	#1
mixer Member Mandar Join Date: Mar 2009 Posts: 39 Rep Power: 17	Dear OF Users I would like to create a mass point source at the wall in OF (Just like the CFX has). I do not want to create a hole for inlet on the wall, so i want to create a mass source for steady input of fluid. Is it possible to do so? Similarly, Is it possible to to inject a 'pulse of tracer' at a certain point inside the body. What would the steps be like and what commands would i need? Say commands for identifying the cell, and adding mass source over there either continuous or as a function of time for pulse. How would it finds its way into the equations? Thanks you very much, Mandar

August 19, 2009, 09:39	groovyBC	#4
roth Member Michael Roth Join Date: Mar 2009 Location: Guelph, Ontario, Canada Posts: 50 Rep Power: 17	Have you considered groovyBC? i.e. change the gradient of your tracer based on the resolved tracer diffusivity (alphaEff) to maintain a constant tracer flux. Mike

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[mesh manipulation] Using createPatch in place of couplePatches	sripplinger	OpenFOAM Meshing & Mesh Conversion	8	November 13, 2009 07:14
[blockMesh] BlockMeshmergePatchPairs	hjasak	OpenFOAM Meshing & Mesh Conversion	11	August 15, 2008 07:36
Need help on mass source at wall boundary!	James	FLUENT	0	October 16, 2007 02:40
Simple Wall Boundary Conditions for Turb. Flow	Greg Perkins	Main CFD Forum	4	May 28, 2002 23:10
Grid refinement with wall functions	Mark Render	Main CFD Forum	8	May 2, 2000 07:09

July 14, 2009, 21:12		#2
mixer Member Mandar Join Date: Mar 2009 Posts: 39 Rep Power: 17	any ideas on above post

August 18, 2009, 22:15		#3
mixer Member Mandar Join Date: Mar 2009 Posts: 39 Rep Power: 17	any suggestions from OF experts on how to add a mass source at a particular location