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free surface problem/time dependant

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Old   July 23, 2007, 17:44
Default free surface problem/time dependant
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sid
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i have 2 problems.One is how do u put a time dependant inlet velocity and second is can we get the free surface diagram of water when it flows over a semi circle(the general case is when the flow is continuously there n the free surface is to be known eg a rock in the bottom of the pond...the case i want to know is when water flows in at the initial moment eg to demonstrate functioning of a weir say...please please help
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Old   July 23, 2007, 17:47
Default Re: free surface problem/time dependant
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AK
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You can specify the velocity by writing a user defined function.

Regarding your second problem there is a tutorial in fluent. Check that out.
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Old   July 23, 2007, 18:06
Default Re: free surface problem/time dependant
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red lemon
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Yes use udf or use transient profile file (described in UG). To plot free surface create surface of volume fraction 0.5.
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