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CFX expression using method

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Old   January 28, 2022, 02:11
Default CFX expression using method
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Jin Seok Lee
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I am analysing about internal flow

the ventilation is in the room and it automatically operate by sensing co2 density

For example, if co2 denstiy' is 1000ppm or less, the ventilation operate 1st stage. if co2 denstiy' is 1500ppm or less, the ventilation operate 2st stage.

So I want to change mass accoring to co2 density.

I was tried, but I couldn't solve.

I am not sure that CFX expression is possible.

Do you have some idea for me?

Thank you for my question and I hope to answer
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Old   January 28, 2022, 03:57
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Glenn Horrocks
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This type of controller can only work if it is a transient simulation. Is your simulation transient?

Also, please attach your output file.
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