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time dependant volume fraction UDF doesn't work

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Old   June 21, 2017, 17:37
Default time dependant volume fraction UDF doesn't work
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Jihyeon Kim
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Dear everybody,

I set UDF for Fluent in order to change volume fraction of my multiphase flow model, like this;

t=0~0.1s -> gas volume fraction =0
t=0.1~0.2s -> gas volume fraction=1
t=0.2~0.3s -> gas volume fraction=0
t=0.3~0.4s -> gas volume fraction=1
..... repeated.

I also attached my UDF.
When I set UDF for the phase at the inlet, it doesn't show any error.
And even calculation run well, but the result shows nothing, just empty pipe.

I guess my code is a bit strange (but computationally no error)
or I forgot certain step to reflect this for the volume fraction at the inlet.
However I really don't know what I exactly miss.

Can anybody help and advice please?
Attached Files
File Type: c unsteady2.c (598 Bytes, 9 views)
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Old   June 22, 2017, 05:56
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Copy+paste the code to the message, please.
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