CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   OpenFOAM Post-Processing (https://www.cfd-online.com/Forums/openfoam-post-processing/)
-   -   Cannot visualize temperature field in nature convection case (https://www.cfd-online.com/Forums/openfoam-post-processing/218438-cannot-visualize-temperature-field-nature-convection-case.html)

ErenC June 20, 2019 08:05

Cannot visualize temperature field in nature convection case
 
Hello again dear foamers!

I am using buoyantBoussinesqSimpleFoam for a natural convection case, where left wall is heated in a square domain and dT=0.00005. I can visualize the U, velocity profile fits the original profile yet I can't see any temperature difference in the domain. I tried to change the scale(since it is reaaaally low) inside the paraFoam, still nothing.

So I checked iteration folders, all the values inside the T files are 300(for all steps), which is internal field temperature(uniform), so there is no temperature change inside the computational domain.

But, driving force is temperature difference so I have to see something.

Any help would be great,
Thanks.
Eren.

ErenC June 24, 2019 07:45

So I checked iteration folders again, both Temperature BC's are also shown as 300 K. But as I said one of them is actually 300.00005 K in my 0/T file. I can't think of any physical reason for this. It must be something else, like, OpenFoam does not take e-5 into account in iteration folders or something like that.

yambanshee June 25, 2019 06:05

You would likely need to turn up the writePrecision field in controlDict

ErenC June 25, 2019 14:43

Quote:

Originally Posted by yambanshee (Post 737189)
You would likely need to turn up the writePrecision field in controlDict

Yes! Thank you sir!


All times are GMT -4. The time now is 18:01.