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how to define two inlet boundary condition at the different time

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Old   December 13, 2010, 03:43
Default how to define two inlet boundary condition at the different time
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ekkapong
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Dear all

pleas give me your suggestion about defining the two boundary condition at the different time for simulation heat transfer:
first time= 0-15s use temperature = 150C, and then time= 15-30s use 91C .

the output that I want to look are the outlet temperature of each inlet boundary condition.
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Old   December 13, 2010, 05:44
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Bernhard
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You can easily to this by means of a UDF. You can take a look in the UDF Manual, and use the DEFINE_PROFILE subroutine, in which you can base the value on the time. Good luck!
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Old   December 13, 2010, 19:40
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See a very recent post for examples on how to do (simple) time-varying inlets:

http://www.cfd-online.com/Forums/flu...tml#post287097

Many basic problems like this can be solved by performing a quick search of the forum first.

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