solved: contact angle correction in interFoam

richpaj · April 19, 2011, 21:49

Quote:

Originally Posted by alfa_8C

Hy,
I'm using interFoam in a relatively simple setup. I have a tank filled with water. The top of the tank is open to atmosphere. Close to the bottom the tank has an outlet into a large resevoir of water. The free surface level of the reservoir is at -1m. As far as I know the BC for the pressure at the outlet has to be set to 0, as no hydrostatic pressure has to be considered. BUT!!! How can I make the code understand, that my free surface level outside the domain is at -1m? This must be given for sure but I don't know where.
Could anybody give me a hint?
Thanks in advance, Tony

In createFields.H "g*h" is calculated at the cell and face centres so
that relative heights are automatically taken into consideration, assuming
that is you specify g correctly in the "constant" directory of your case folder.

I wonder if this is what you mean?

Regards,

Richard K.

richpaj · April 19, 2011, 21:57

(with reference to Andrea's runtime error above)

I had a similar error message a while back (running OF1.6.x using openmpi ver. 1.2.8) but updating openmpi to version 1.4.1 seems to resolve the issue.
Perhaps it might work for you too,

Regards,

Richard K.

duongquaphim · April 20, 2011, 04:36

I don't know about OF1.7.1 but the git version 1.7.x works fine for parallel

Duong

Stefan42 · August 16, 2011, 08:33

Hi Foamers,

I have the same problem as Andrea had.

Running my case in parallel with version 1.6. works fine. But with version 1.7.1 it doesn`t work in parallel. It works only on one processor.

Is there a fix for that? Or is it a problem with openmpi as richpaj said?

Found it and it works.

https://github.com/OpenCFD/OpenFOAM-...7bc8646e01526d

Thanks
Stefan

Saideep · March 2, 2016, 13:43

Hi everyone;

I have been testing the "capillaryRise" test case that is available.
Using OF2.3.x and bc's similar to test case.
I would like to measure the flow length of the meniscus turning off the influence of 'g'.

I know one analytical solution which is the "Washburn equation (Wiki)" that gives the capillary rise over time but i observed quite a big difference between the computed flow length and analytical equation.
NOTE: Wiki discusses relation for a cylindrical channel but I changed the flow resistance to a rectangular channel.

https://en.wikipedia.org/wiki/Washbu...ion#Derivation

Is there an other analytical solution for this sort of case? If yes, could you please let me know regarding it.

Thanks;
Saideep

August 16, 2011, 08:33		#24
Stefan42 New Member Stefan Mosler Join Date: Aug 2011 Posts: 1 Rep Power: 0	Hi Foamers, I have the same problem as Andrea had. Running my case in parallel with version 1.6. works fine. But with version 1.7.1 it doesn`t work in parallel. It works only on one processor. Is there a fix for that? Or is it a problem with openmpi as richpaj said? Found it and it works. https://github.com/OpenCFD/OpenFOAM-...7bc8646e01526d Thanks Stefan Last edited by Stefan42; August 25, 2011 at 04:19.

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April 19, 2011, 21:57		#22
richpaj Member Richard Kenny Join Date: Mar 2009 Posts: 64 Rep Power: 18	(with reference to Andrea's runtime error above) I had a similar error message a while back (running OF1.6.x using openmpi ver. 1.2.8) but updating openmpi to version 1.4.1 seems to resolve the issue. Perhaps it might work for you too, Regards, Richard K.

April 20, 2011, 04:36		#23
duongquaphim Member Duong A. Hoang Join Date: Apr 2009 Location: Delft, Netherlands Posts: 93 Rep Power: 17	I don't know about OF1.7.1 but the git version 1.7.x works fine for parallel Duong

March 2, 2016, 13:43		#25
Saideep Senior Member Saideep Join Date: Apr 2015 Location: INDIA Posts: 203 Rep Power: 12	Hi everyone; I have been testing the "capillaryRise" test case that is available. Using OF2.3.x and bc's similar to test case. I would like to measure the flow length of the meniscus turning off the influence of 'g'. I know one analytical solution which is the "Washburn equation (Wiki)" that gives the capillary rise over time but i observed quite a big difference between the computed flow length and analytical equation. NOTE: Wiki discusses relation for a cylindrical channel but I changed the flow resistance to a rectangular channel. https://en.wikipedia.org/wiki/Washbu...ion#Derivation Is there an other analytical solution for this sort of case? If yes, could you please let me know regarding it. Thanks; Saideep