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UDF DEFINE_SPECIFIC_HEAT after loading - fluent closed automatically

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Old   December 31, 2020, 05:13
Question UDF DEFINE_SPECIFIC_HEAT after loading - fluent closed automatically
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Eva Knahl
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Hello,



I have a Problem with a UDF for specific heat.

I can built and load the udf and in the Material Dialog I can choose the udf.

Now when i want to assign the udf, it loads briefly and right after that fluent closes automatically. Why does this happen?

In the UDF I also define density, sound of speed, thermal conductivity and viscosity with DEFINE_PROPERTY - this works perfectly...



How can I fix this? Do I have a Mistake in the UDF?

only the DEFINE_SPECIFIC_HEAT part

eth-cpL.c

Thanks in advance for the help!
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Old   December 31, 2020, 08:24
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Quote:
Originally Posted by EvaKn View Post
Hello,



I have a Problem with a UDF for specific heat.

I can built and load the udf and in the Material Dialog I can choose the udf.

Now when i want to assign the udf, it loads briefly and right after that fluent closes automatically. Why does this happen?

In the UDF I also define density, sound of speed, thermal conductivity and viscosity with DEFINE_PROPERTY - this works perfectly...



How can I fix this? Do I have a Mistake in the UDF?

only the DEFINE_SPECIFIC_HEAT part

Attachment 81846

Thanks in advance for the help!
are you using any UDM in your UDF?
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Old   December 31, 2020, 08:29
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Quote:
Originally Posted by rupak504 View Post
are you using any UDM in your UDF?

No, I am not using any UDM.
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Old   January 3, 2021, 18:13
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AlexanderZ will become famous soon enoughAlexanderZ will become famous soon enough
remove line
Code:
T = C_T(c,t);
from your code, T is defined in header
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