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01-21-2019 11:18 AM

Hello,

I am looking for a solution to define a variable whose physical dimension is a "Surface power density" .

That is "W/m^2" or also "kg/m^3".

I don't find this measure in the list then I write an expression.

Thank you for your help.

Solved! Go to Solution.

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3 REPLIES 3

Re: New physical measure -> Surface power density

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01-21-2019 11:58 AM

Hi serrep,

In the Dimensional Column from the dropdown first define Heat Flux resp. Mass Density then define your units in the Unit column.

Best Regards

Fred

Re: New physical measure -> Surface power density

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01-21-2019 12:20 PM

Thank you,

The dimensionality "Heat Flux" is correct.

I have made a mystake with the other physical dimension. It was "kg/s^3" and not "kg/m^3".

Best Regards

Philip

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01-21-2019 12:42 PM

Hi @serrep,

I had same difficulty to find out from **>50 dimensionality types** (being new to expressions). So to find out correct type:

- exported existing expressions to .exp file
- according to syntax put new expressions values like below:

[W/m^2]test1=202

[kg/m^3]test2=202

[kg/s]test3=202

- Imported the .exp file again & NX has created expressions using matching types like shown in image below.

Shared above scenario, this will certainly be helpful to someone ahead.

**NX gives error** while importing expression **with unit ****"kg/s^3",** this indicates there doesn't exists dimensionality for this.

Regards,

Samadhan

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