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Old   December 5, 2011, 10:31
Default Expression for concentration
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I want to define in CFX an expression for concentration as a function of time: concentration decrease by 50% every second.

Anybody know how to define an expression?

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Old   December 5, 2011, 17:44
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More information needed:

Is this concentration at an inlet which gets convected away from there? Or is the concentration independant of the flow?

Please explain what you are trying to do.
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