Problem using large writeInterval values in Modified interPhaseChangeFoam

vasava · September 11, 2014, 04:29

I use openFoam 2.3.0. I was exploring possibilities of simulating evaporation-condensation phenomena with openFoam and I came across instructions by Martin Andersen (Link). It is of notice that these instructions are for OF2.0.x.

I modified and compiled interPhaseChangeFoam following these instructions without any problems.

For test example my deltaT is 1e-8. The problem is when I run the test case using a large
writeInterval value e.g. 0.0001 or 0.001 the case diverges with large Courant number error. But when I use a smaller value e.g. 1e-7 or 1e-8 it runs without any problem. This is bit annoying a I have to keep an eye on the hard disk space all the time and delete the additional time steps manually.

Attached are solver from Martin Andersen (OF 2.0.x, myInterPhaseChangeFoam), the test case and OF2.3.0 solver (evapCondFoam).

Any comments??

vasava · September 11, 2014, 07:51

I checked once again. While compiling I get three warnings:

Code:

/opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H: In function ‘int main(int, char**)’:
/opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H:17:6: warning: unused variable ‘alphaApplyPrevCorr’ [-Wunused-variable]
/opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H:23:8: warning: unused variable ‘icAlpha’ [-Wunused-variable]
/opt/openfoam230/src/finiteVolume/lnInclude/readTimeControls.H:38:8: warning: unused variable ‘maxDeltaT’ [-Wunused-variable]

Perhaps the problem has something to do with these errors. Any comments on that?

ARUN K RAJ · January 27, 2015, 01:24

I am facing a similar situation
/opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H: In function ‘int main(int, char**)’:
/opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H:17:6: warning: unused variable ‘alphaApplyPrevCorr’ [-Wunused-variable]
/opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H:23:8: warning: unused variable ‘icAlpha’ [-Wunused-variable]
/opt/openfoam230/src/finiteVolume/lnInclude/readTimeControls.H:38:8: warning: unused variable ‘maxDeltaT’ [-Wunused-variable]

the same errors i do get while trying to compile the solver. Have u solved this issue?

vasava · January 27, 2015, 03:43

No. I could run the test case without any additional errors but I am not sure if the results are reliable. I havent tested or verified the solver or the solutions since then.

alexeym · January 27, 2015, 04:02

Hi,

As interPhaseChangeFoam uses PIMPLE algorithm, can you post your PIMPLE dictionary from fvSolution file? What convergence criterion do you utilize within time step?

September 11, 2014, 04:29	Problem using large writeInterval values in Modified interPhaseChangeFoam	#1
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 23	I use openFoam 2.3.0. I was exploring possibilities of simulating evaporation-condensation phenomena with openFoam and I came across instructions by Martin Andersen (Link). It is of notice that these instructions are for OF2.0.x. I modified and compiled interPhaseChangeFoam following these instructions without any problems. For test example my deltaT is 1e-8. The problem is when I run the test case using a large writeInterval value e.g. 0.0001 or 0.001 the case diverges with large Courant number error. But when I use a smaller value e.g. 1e-7 or 1e-8 it runs without any problem. This is bit annoying a I have to keep an eye on the hard disk space all the time and delete the additional time steps manually. Attached are solver from Martin Andersen (OF 2.0.x, myInterPhaseChangeFoam), the test case and OF2.3.0 solver (evapCondFoam). Any comments??

January 27, 2015, 01:24	Helo	#3
ARUN K RAJ New Member ARUN Join Date: Jan 2015 Location: Kerala Posts: 18 Rep Power: 11	I am facing a similar situation /opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H: In function ‘int main(int, char**)’: /opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H:17:6: warning: unused variable ‘alphaApplyPrevCorr’ [-Wunused-variable] /opt/openfoam230/src/finiteVolume/lnInclude/alphaControls.H:23:8: warning: unused variable ‘icAlpha’ [-Wunused-variable] /opt/openfoam230/src/finiteVolume/lnInclude/readTimeControls.H:38:8: warning: unused variable ‘maxDeltaT’ [-Wunused-variable] the same errors i do get while trying to compile the solver. Have u solved this issue?

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January 27, 2015, 03:43		#4
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 23	No. I could run the test case without any additional errors but I am not sure if the results are reliable. I havent tested or verified the solver or the solutions since then.

January 27, 2015, 04:02		#5
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,938 Rep Power: 39	Hi, As interPhaseChangeFoam uses PIMPLE algorithm, can you post your PIMPLE dictionary from fvSolution file? What convergence criterion do you utilize within time step?