[Hamda]

Hi,
I am supposed to model heat transfer between spheres (solid) and fluid (the space). each sphere is a fuel element and generates heat. So I defined an energy source in subdomain in solid.

When in Fluid domain.... Heat transfer; I select "None" or "Isothermal" I can run my case but when I select, "total energy" or "thermal energy" I can't run it.

I think my problem is related to setting of boundary conditions, models in fluid domain and fluid and solid interfaces.

I really appreciate if someone who has experience on this issue, help me.



Thanks

[Gert-Jan]

Given the problem you should run with Thermal Energy. And it should run fine. Since it doesn't, there is something wrong with the settings. But it is impossible to say what is wrong without more information.

Can you share the output file?

[Hamda]

Originally Posted by Gert-Jan

Given the problem you should run with Thermal Energy. And it should run fine. Since it doesn't, there is something wrong with the settings. But it is impossible to say what is wrong without more information.

Can you share the output file?

Thank you for your swift response.The solver failed with a non-zero exit code of : 2


Since I think the problem is related to fluid and interface settings. I provide you with more information about them. Please find the attached files in which there are settings of fluid and solid interface have been shown.
Many thanks

[ghorrocks]

Please attach your CCL file, not screen shots. Also error codes are useless without context. Please attach your output file for that one.

You have set the non-overlap conditions. These get applied for regions where the the interface does not overlap, and you do not appear to have any of this. Is this what you intended? I suspect not....

[Hamda]

Originally Posted by ghorrocks

Please attach your CCL file, not screen shots. Also error codes are useless without context. Please attach your output file for that one.

You have set the non-overlap conditions. These get applied for regions where the the interface does not overlap, and you do not appear to have any of this. Is this what you intended? I suspect not....

I am sending you my CCL file, please fine the attached file. No I didn't set non- overlap conditions.

[ghorrocks]

There is nothing obviously wrong after a quick look. You have set Viscous dissipation to On which is almost certainly incorrect, but this probably won't have any significant bad effects so correcting it is unlikely to help much.

Please post your output file and if the run produces a results file an image from the results file. The image should show the results you are getting and why you think the results are wrong.

[Hamda]

Originally Posted by ghorrocks

There is nothing obviously wrong after a quick look. You have set Viscous dissipation to On which is almost certainly incorrect, but this probably won't have any significant bad effects so correcting it is unlikely to help much.

Please post your output file and if the run produces a results file an image from the results file. The image should show the results you are getting and why you think the results are wrong.

please find the output file. No I can't run it.

[Gert-Jan]

Did you read the output file at all? How obvious do you want the solution to be presented?

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| SYMASS_CS_ELIM : The solver ran out of temporary space while buil- |
| ding a linked list for a domain. Try setting the expert paramete- |
| r "topology estimate factor" to a value greater than 1.0. Values |
| higher than 1.2 should not be necessary. |
| |
| |
+--------------------------------------------------------------------+

[Hamda]

Originally Posted by Gert-Jan

Did you read the output file at all? How obvious do you want the solution to be presented?

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| SYMASS_CS_ELIM : The solver ran out of temporary space while buil- |
| ding a linked list for a domain. Try setting the expert paramete- |
| r "topology estimate factor" to a value greater than 1.0. Values |
| higher than 1.2 should not be necessary. |
| |
| |
+--------------------------------------------------------------------+

Yes you're right. I just had a glance at it and I didn't see that message at the end of the file. Now I can run it. Thank you so much.

[Gert-Jan]

Nice to hear. Have fun.

[Gert-Jan]

BTW, I saw that you run upwind. Maybe you used that setting while finding a solution. Now I strongly recommend to set it back to High Resolution.

[Hamda]

Originally Posted by Gert-Jan

BTW, I saw that you run upwind. Maybe you used that setting while finding a solution. Now I strongly recommend to set it back to High Resolution.

Yes I will do that. But for the first run I make simple my case. My real case is unsteady and I should write some expression.



Many thanks