In VOF model, The bubble growth matter.

orchiders · July 15, 2014, 20:48

In VOF model, I want to simulate boiling bubble growth.

I know that VOF model needs source in each cell for mass transfer bewteen primary(vapor) and secondary phase(liquid).

So I wrote UDF files(mass source in liquid and vapor, and energy source in mixture).

I expressed mass soures, energy source as attached image.

Fluent inputing UDF operate. but primary void fraction is zero.

I carried out this simulation.
1. Inputting mesh.
2. Activitating VOF model, Energy, laminar
3. Inputting material, UDF and assigning UDM
4. Setting boundatys, operating conditions
5. Setting initialization(Temperature : saturated temperature/fraction : 1)
6. Run after setting run calculation.

I don't undersand this matter.

I think it is the initialization matter but I don't be assured of it.

Do you think what is the matter?
Could you please help me?

Sachin Zanje · December 25, 2018, 02:37

Has this problem resolved?
What i feel is that you can initialize the bubble by creating the patch.

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December 25, 2018, 02:37		#2
Sachin Zanje New Member Maharashtra Join Date: Dec 2017 Posts: 13 Rep Power: 8	Has this problem resolved? What i feel is that you can initialize the bubble by creating the patch.