Time delayed input for multiphase model in Fluent

Rakib · July 16, 2015, 16:08

Hi

I am a beginner in Fluent. I am working on multi-phase (water and air) model where water and air are coming to a vessel from two different direction and different path. I know the mass flow rate at the inlets for water and air. In my case water is injected 7 seconds earlier than the injection of air. Is it possible to to provide any time delay between the two inputs? If it is possible , any help regarding time delay input will be highly appreciated.

Regards
Rakib

strongrj13 · July 17, 2015, 09:41

If you want to get into doing it automatically you can write commands to turn on the air after so many time steps or you just run it with just the water for 7 seconds and then turn on the air manually.

Rakib · July 17, 2015, 19:50

Thanks Robert for your guideline. The second procedure would be easier for me compared to the other one. If I am not wrong, I guess for the automatic procedure you are referring to UDF (Define Macros).

July 16, 2015, 16:08	Time delayed input for multiphase model in Fluent	#1
Rakib New Member Rakibul Islam Join Date: Jul 2015 Posts: 6 Rep Power: 11	Hi I am a beginner in Fluent. I am working on multi-phase (water and air) model where water and air are coming to a vessel from two different direction and different path. I know the mass flow rate at the inlets for water and air. In my case water is injected 7 seconds earlier than the injection of air. Is it possible to to provide any time delay between the two inputs? If it is possible , any help regarding time delay input will be highly appreciated. Regards Rakib

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July 17, 2015, 09:41		#2
strongrj13 Member Robert Strong Join Date: Feb 2015 Posts: 30 Rep Power: 11	If you want to get into doing it automatically you can write commands to turn on the air after so many time steps or you just run it with just the water for 7 seconds and then turn on the air manually.

July 17, 2015, 19:50		#3
Rakib New Member Rakibul Islam Join Date: Jul 2015 Posts: 6 Rep Power: 11	Thanks Robert for your guideline. The second procedure would be easier for me compared to the other one. If I am not wrong, I guess for the automatic procedure you are referring to UDF (Define Macros).