about mass source for species

September 18, 2003, 11:11

Hello! I want to add mass source for destination species using UDS in FLUENT4.But I can not understand the content in URSTRM.Give me some advice,thanks.

September 22, 2003, 04:57

Hey, Can you explain what URSTRM is ?

September 22, 2003, 19:57

It isn't that straight forward, but works okay. Can you just set sources at boundaries using Fluent menus? You can just use the SMASEX(L,i) variable for the source of species i in cell L and let Fluent take care of the rest. Good Luck.

September 23, 2003, 23:01

Thank you very much.If I want to add species in whole field,how to do?

September 24, 2003, 12:16

For L = first active cell to last active cell, set SMASEX for species i to source value (in kg/s). This can be done in any active user subroutine (that has #INCLUDE statement for correct variable). Make sure mass balance balances (i.e. using Total zone integral in View alpha). It may take one more tweak.

September 25, 2003, 23:29

Thank you very much!I have some questions more,can I chat with you online? my MSN messenger is forestmood@hotmail.com

September 18, 2003, 11:11	about mass source for species	#1
lu Guest Posts: n/a	Hello! I want to add mass source for destination species using UDS in FLUENT4.But I can not understand the content in URSTRM.Give me some advice,thanks.

September 22, 2003, 04:57	Re: about mass source for species	#2
thomas Guest Posts: n/a	Hey, Can you explain what URSTRM is ?

September 22, 2003, 19:57	Re: about mass source for species	#3
Allan Walsh Guest Posts: n/a	It isn't that straight forward, but works okay. Can you just set sources at boundaries using Fluent menus? You can just use the SMASEX(L,i) variable for the source of species i in cell L and let Fluent take care of the rest. Good Luck.

September 23, 2003, 23:01	Re: about mass source for species	#4
lu Guest Posts: n/a	Thank you very much.If I want to add species in whole field,how to do?

September 24, 2003, 12:16	Re: about mass source for species	#5
Allan Walsh Guest Posts: n/a	For L = first active cell to last active cell, set SMASEX for species i to source value (in kg/s). This can be done in any active user subroutine (that has #INCLUDE statement for correct variable). Make sure mass balance balances (i.e. using Total zone integral in View alpha). It may take one more tweak.

September 25, 2003, 23:29	Re: about mass source for species	#6
lu Guest Posts: n/a	Thank you very much!I have some questions more,can I chat with you online? my MSN messenger is forestmood@hotmail.com

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
mass flow in is not equal to mass flow out	saii	CFX	12	March 19, 2018 06:21
Problem with Mass source, Momentum source theory	diffo	Fluent UDF and Scheme Programming	0	August 20, 2009 07:10
Creating a mass point source on a boundary (say, wall) or in Interior (for tracer)	mixer	OpenFOAM Running, Solving & CFD	3	August 19, 2009 10:39
OpenFOAM on MinGW crosscompiler hosted on Linux	allenzhao	OpenFOAM Installation	127	January 30, 2009 20:08
Udf for mass source in mixture domain	Asghari	FLUENT	0	July 12, 2006 02:16