acuPrep: *** ERROR: Invalid surface

Sivaprakash_V · 2025-06-23T07:01:49+00:00

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Hi ,
I am performing Conjugate heat transfer analysis using Simlab & Acusolve with Moving reference Frame.

I meshed the model using simlab and assigned the boundary condition properly.

After submitting the run, I received this type of error:
acuPrep: Processing SURFACE_SET( "Interface_WINDINGS_2_windings_1_tet_tria3" )
acuPrep: *** ERROR: Invalid surface 1
acuPrep: *** ERROR: Invalid surface 2
acuPrep: *** ERROR: Invalid surface 3
acuPrep: *** ERROR: Error has occurred: terminate RUN
acuPrep: ------------------------------------------------------------------
acuPrep: Input CPU/Elapse time = 2.845470e+02 1.065770e+02 Sec
acuPrep: Proc. CPU/Elapse time = 0.000000e+00 0.000000e+00 Sec
acuPrep: Solar CPU/Elapse time = 0.000000e+00 0.000000e+00 Sec
acuPrep: DDC CPU/Elapse time = 0.000000e+00 0.000000e+00 Sec
acuPrep: Output CPU/Elapse time = 0.000000e+00 0.000000e+00 Sec
acuPrep: Total CPU/Elapse time = 2.849370e+02 1.074510e+02 Sec
acuPrep: Total Memory Size = 2.757000e+03 Mbytes
acuRun: *** ERROR: error occurred executing acuPrep

In the log file , there is lot of invalid surface and I mentioned some message for reference.

How to resolve this type of errors in acusolve?

Thanks & Regards,
Sivaprakash.

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Accepted answers

ydigit

This is a very rare error, that might need looking at your model.

I would recommend creating support ticket and arranging a meeting.

All comments

ydigit

Could please post the .inp and .Log files ?

It would be easier to comment on what is leading to this error.

Sivaprakash_V

Hi,
I am unable to attach the .inp file but I can attach the log file here.

Thanks & Regards,
sivaprakash V.

acupro

Also - which version of SimLab are you using?

Sivaprakash_V

simlab 2025 and Acusolve 2025

ydigit

We need the entire Log file, not just a snippet. I do not see the Log file uploaded, could you please try again?

Also, please provide the snippet of .inp with approx 40 lines before and 40 lines after the occurance of surface Interface_WINDINGS_2_windings_1_tet_tria3

ydigit

Did you get any warnings while exporting the .inp or before starting the run, in SimLab ?

Sivaprakash_V

No, I didn't get any warning while updating the solution in simlab.

I attached the entire log file and created a text document with all the surfaces set for your reference.

ydigit

This is a very rare error, that might need looking at your model.

I would recommend creating support ticket and arranging a meeting.

Sivaprakash_V

Hi,

Thankyou for answers.
Sure, I newly meshed a model and submit the run. This time the solution solving without any errors.

Thanks & Regards,
Sivaprakash.