how to modify a solver to add a disturbance

goodkid · June 24, 2011, 10:11

how to modify a solver to add a disturbance? In a solver I am going to add a disturbance in a solver while the values of some fields is constant.However the constant values is not a simple one ,i can not solve it just in the solver code .
How can I handle it?Thanks a lot.

benk · June 24, 2011, 12:21

If you're talking about adding a disturbance via a boundary, for example: an abrupt change in the value of a boundary condition at a specified time, then I'd suggest you look into using groovyBC (http://openfoamwiki.net/index.php/Contrib_groovyBC) which makes this type of thing fairly easy (or you could hard code it too).

goodkid · June 25, 2011, 05:35

Quote:

Originally Posted by benk

If you're talking about adding a disturbance via a boundary, for example: an abrupt change in the value of a boundary condition at a specified time, then I'd suggest you look into using groovyBC (http://openfoamwiki.net/index.php/Contrib_groovyBC) which makes this type of thing fairly easy (or you could hard code it too).

I am sorry i did not explain it clearly.I mean some classes of values do not change while time varies,however,the constant values can be very complex,in ditails,the values in different earas vary.the disturbance means some other classes,whose values depend on both the constant and theirselves.for example,the B (magetic),in the magneticFoam slover
,is constant.

June 24, 2011, 10:11	how to modify a solver to add a disturbance	#1
goodkid New Member J.Y.Cheng Join Date: Mar 2011 Posts: 15 Rep Power: 16	how to modify a solver to add a disturbance? In a solver I am going to add a disturbance in a solver while the values of some fields is constant.However the constant values is not a simple one ,i can not solve it just in the solver code . How can I handle it?Thanks a lot.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
thobois class engineTopoChangerMesh error	Peter_600	OpenFOAM	4	August 2, 2014 10:52
modify dynamicBodyFvMesh to use SBRStress solver	madique	OpenFOAM	8	March 30, 2012 11:26
Working directory via command line	Luiz	CFX	4	March 6, 2011 21:02
Getting too many iterations by velocity solving (aborting). Changing U - Solver?	suitup	OpenFOAM Running, Solving & CFD	0	January 20, 2010 08:45
why the solver reject it? Anyone with experience?	bearcat	CFX	6	April 28, 2008 15:08

June 24, 2011, 12:21		#2
benk Senior Member Ben K Join Date: Feb 2010 Location: Ottawa, Canada Posts: 140 Rep Power: 20	If you're talking about adding a disturbance via a boundary, for example: an abrupt change in the value of a boundary condition at a specified time, then I'd suggest you look into using groovyBC (http://openfoamwiki.net/index.php/Contrib_groovyBC) which makes this type of thing fairly easy (or you could hard code it too).