You need to use The VOF multi-phase model of Fluent for interface capture between gas bubble and surrounding liquid but in case of boiling heat transfer with phase change you have to implement a boiling model using a UDF. The already implemented boiling model in fluent is not applicable with the VOF formulation. It only works with the Eulerian multiphase model.
You welcome ! I am working in the same field but with OpenFOAM. My previous experience in CFD is in FLUENT (PhD) but now I have switched to OpenFoam for my PostDoc Research. So it is nice and usefull for me to exchange ideas with people working with boiling heat transfer and bubble growth in general.
can u send me your articles or thesis to my email [email protected], have you can simulate the growth of bubble , I have simulate the detachment but i can't do the growth
I dont have anything yet on boiling. I sort off made a change of direction on my postdoc that started a few months before. My previous articles and work is on turbidity current modelling. I am sorry for that that if i got something ready in OpenFoam i will let you know
Hi Dr. Anastasios
I am also working on Boiling for fluids using VOF model in FLUENT software. I have used "Coupled" scheme for pressure velocity linking and all the other parameters are 2nd order upwind. My time step is 1e-6 seconds. My calculation was working fine till 0.44 sec, but after that when vapor phase started forming (minute bubbles on the walls) the solution has diverged. I tried changing the under-relaxation factors and linking schemes but it is still diverging. Can you possibly see where exactly the problem lies? Would be grateful for your response!
Hi dears.. I want to simulate the buuble,s moving in nanofluid phases. Do i nead a UDF code or can I simulate it withought UDF code? How drow the buuble in Gambit and what is the Bubble boundary condition with environment fluid? Can anyone help me to this field?
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