[kjh9537]

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?

[KaLium]

Copy+paste the code to the message, please.