VOF modelling Open Channel flow

August 10, 2007, 23:10

I try to use VOF to modele a two phase flow (air ,water)of intorrent ditch. Air is my primary phase.I'm not clear about how to initilize the channel.

The ditch initially empty (filled with air),and i have to patch the domain of water ,then patch the velocity again,since the velocity of water can't be initilized .But at the time of t=0,there is no water in the channel,so i can't patch any domain.

I tried to initilize the channel filled with water,but i think this initilize condition doesn't accrod with the fact.

Any ideas anyone? Thanks in advance. rodi

August 11, 2007, 04:04

You can increase the channel domain to patch the water domaoin at t=o.

August 11, 2007, 13:15

Thanks for your help!

However i cannot get the expected interface, for i can just patch the area of the water inlet (3 cells).

Hope u can help me with this. Regards.

August 10, 2007, 23:10	VOF modelling Open Channel flow	#1
Rodi Guest Posts: n/a	I try to use VOF to modele a two phase flow (air ,water)of intorrent ditch. Air is my primary phase.I'm not clear about how to initilize the channel. The ditch initially empty (filled with air),and i have to patch the domain of water ,then patch the velocity again,since the velocity of water can't be initilized .But at the time of t=0,there is no water in the channel,so i can't patch any domain. I tried to initilize the channel filled with water,but i think this initilize condition doesn't accrod with the fact. Any ideas anyone? Thanks in advance. rodi

August 11, 2007, 04:04	Re: VOF modelling Open Channel flow	#2
msureshkumar Guest Posts: n/a	You can increase the channel domain to patch the water domaoin at t=o.

August 11, 2007, 13:15	Re: VOF modelling Open Channel flow	#3
Rodi Guest Posts: n/a	Thanks for your help! However i cannot get the expected interface, for i can just patch the area of the water inlet (3 cells). Hope u can help me with this. Regards.

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