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Old   May 23, 2011, 09:23
Default Step function
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Dear all,

a very simple question about step function in CFX... sorry but i don't remember how to use it.

I am running a transient simulation and I need to impose a variable temperature at a wall domain as a function of time.

I need to set up an expression for temperature such that:

Temperature= 25 from 0sec up to 10sec included
Temperature= 40 from 11sec up to 20sec included
Temperature= 60 from 21sec up to 35sec included
Temperature= 100 from 36sec up to 60sec (60sec is the end of transient simulation)

Many thanks for your help.

Kind regards
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Old   May 23, 2011, 19:01
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Glenn Horrocks
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You can generate this using step or if functions in CEL but it is easier to set up a function like this as a 1D interpolation function. Make it a function of time and use the function to set the temperature.
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