During the nucleate boiling numerical simulation of bubble growth using ANSYS Fluent, what is mean by bubble seed? Do we have to insert the bubble during modelling itself?
Bubble seed refers to nucleation phenomena at the origin of bubble formation. When the liquid is “seeded” homogeneously with a certain number of tiny vapour bubbles, theese will start to grow as soon as the liquid becomes “saturated” (P = Psat(T0 )) and correspondingly vapour volume fraction starts to increase as a result of phase change.
SEE:
Article Computational modelling of flash boiling flows: A literature survey
The bubble inception process is the dominating factor in nucleate boiling, which is why so much attention has been focused on this over the many years of study and experiment.
Dear Mr.Ramarajan J.
greeting
I'm absolutely agree with the definition of Dr. Ramarajan J. for nucleate boiling numerical simulation of bubble growth
where the nucleate bubble is creating when the liquid becomes saturation and the bubble size it is depending on many parameters like the heat source temperature, the surface finishing, propriety of the liquid ... etc
So I suggest to back to the reference
THERMO-FLUID DYNAMICS OF TWO-PHASE FLOW
by Mamoru Ishii
because you are not dealing with Tow Phase only but your case dealing with Tow Phase Change Phase and that mean there is heat transfer as a latent heat and the bubble meaning the amount of liquid that vaporized and make a bubbles of vapor.
with my respect
Dr. Ali Dawood Salman Thanks for your answer. It would be grateful if you can tell the procedure of introducing bubble.
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