[swak4Foam] stagnation at groovyBC

immortality · November 27, 2012, 03:26

How is it possible to have a p0 and T0 boundary condition without having velocity field at inlet in groovyBC?just these stagnation properties are known.its important for me.sorry for repeat.

treima · November 27, 2012, 03:35

Hi,

do you mean fixedValue boundary conditions?

regards

treima

immortality · November 27, 2012, 04:19

hi dear treima
no.its known only stagnation temp and press on inlet patch.then I dont know haw I put velocity boundary condition.Im working on it.but ill thank any idea.
Thank you for your helping and benefitical suggestions on before posts.thanks.

treima · November 27, 2012, 04:21

For the velocity i would suggest zeroGradient.

immortality · November 27, 2012, 05:08

thank you treima
But I think velocity should read from outside of the grid domain.due to characteristic law you may know that tell at inlet 5 property should be assigned from out and only 1 from inside the domain and vice at outlet for stability of solution.
But velocity have 3 components
But ill examine your good suggestion if it didn't have stability problem all is ok.
Thanks.

November 27, 2012, 03:26	stagnation at groovyBC	#1
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	How is it possible to have a p0 and T0 boundary condition without having velocity field at inlet in groovyBC?just these stagnation properties are known.its important for me.sorry for repeat.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[swak4Foam] groovyBC for oscillatory flow	liybzd	OpenFOAM Community Contributions	5	November 12, 2018 08:53
[swak4Foam] Change in alpha and U with groovyBC in twoPhaseEulerFoam	dani2702	OpenFOAM Community Contributions	0	November 17, 2016 04:30
[swak4Foam] groovyBC issue - k and epsilon	sagnikmazumdar	OpenFOAM Community Contributions	24	March 1, 2015 08:16
[swak4Foam] groovyBC and Eqn.setReference()	benk	OpenFOAM Community Contributions	3	June 2, 2011 09:49
store and plot stagnation conditions	Xobile	Siemens	1	February 9, 2005 22:11

November 27, 2012, 03:35		#2
treima Member Join Date: Mar 2012 Location: Munich, Germany Posts: 67 Rep Power: 14	Hi, do you mean fixedValue boundary conditions? regards treima

November 27, 2012, 04:19		#3
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	hi dear treima no.its known only stagnation temp and press on inlet patch.then I dont know haw I put velocity boundary condition.Im working on it.but ill thank any idea. Thank you for your helping and benefitical suggestions on before posts.thanks.

November 27, 2012, 04:21		#4
treima Member Join Date: Mar 2012 Location: Munich, Germany Posts: 67 Rep Power: 14	For the velocity i would suggest zeroGradient.

November 27, 2012, 05:08		#5
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	thank you treima But I think velocity should read from outside of the grid domain.due to characteristic law you may know that tell at inlet 5 property should be assigned from out and only 1 from inside the domain and vice at outlet for stability of solution. But velocity have 3 components But ill examine your good suggestion if it didn't have stability problem all is ok. Thanks.