Dear all,
I am trying to simulate the thermal condition for a higher power converter shown as follows,
However, when I am trying to start the flow simulation, it shows
I do not know how to solve this problem. Is there anyone can help me about this. Thanks very much ahead !
Usually an error like that is due to you having disabled a component in the Flow Simulation tree and forgetting about it. It seems to be applying to an inlet here, but I don't see an enclosure. This looks like external flow.
Dear Amit,
thanks very much for your kind help.
I am trying your advice.
best regards
ChiZhang
Mar 16, 2016 10:03 AM
Hello Chi,
I would strongly recommend to check all of the boundary conditions in your simulation. For instance, ne face may wrongly be selected as outlet, please check them all. Or if you could upload your model here, we would be able to assist you easily.
Cheers,
- Siavash
Dear Siavash,
thanks very for your help. and I have load up the original files.
the simulation files is ConverterthermalAnalysis.
and there are some Chinese included. and each one I have added English version comment.
thanks very much!
Mar 17, 2016 10:54 AM
Hi Chi,
Thank you for sending the files over.
You have a very FUNDAMENTAL issue for the flow analysis of this model, which is the type of analysis! I found this flow simulation type is considered as INTERNAL, however, there is no boundary (wall, inlet, outlet) around the electronics components. Having said that, the computational domain that you set, does not count as your boundary for the internal flow, you need to have some physical boundaries.
Please let me know if you fully understood the issue as this is vital in your simulation.
Cheers,
- Siavash
Dear Siavash,
yes thanks very much. I am not fully understand how to set the boundary.
I thought the shell for the whole equipment will be the boundary for the computational domain.
best regards!
Chi Zhang
Chi,
Judging from your screenshots, your model is not ready for simulation. There is way too much detail and you don't seem to understand the basics of setting up an internal flow model (no offense meant.) Please go through some of the Online Tutorials provided with the software in the "Help" menu, or ask your software vendor if they offer any courses.
Dear Amit,
thanks very much. I am reading it now.
and trying to modifying the files now.
best regards!
Chi Zhang
This looks like the type of error message you would see if you accidentally applied a boundary condition to the exterior face of a lid, rather than the interior face
All boundary conditions such as your pressure opening should be applied to the interior face of the lid. Either by rotating your view to select it or using the Select Other tool to select through.
The exterior face of a lid is outside the computational domain for an internal analysis
Dear Ryan,
I have modified the files as you said.
but the same result happened.
I have upload the files. would you please help me to see it？
thanks very much ahead
best regards
ChiZhang
Dear Ryan,
I forget the file name. it is ConverterthermalAnalysis.
br
Chi Zhang
Mar 18, 2016 10:27 AM
I did not see any substantial changes in your model, which could make it prepared for internal flow analysis.
Az Amit mentioned, please go over a tutorial for internal flow analysis to get more insight into such those flow simulation.
