Choose of the good multiphase flows model

Miki12 · May 19, 2014, 10:01

Hi everybody,

I would like to know your opinion about a question concerning multiphase flows. I want to simulate with CFD the condensation of little dropletson a surface. I've seen in the User guide three methods: the Eulerian-Eulerian approach, the Lagrangian-Eulerian approach and the Volume Of Fluid approach but any of these three methodsseems to be the good one for my problem:
- the Volume of fluid method is good to capture the free surfaces, I suppose that if I want to use it to catch my droplets, I need a huge amount of cells, am I right?

- the Eulerian-Eulerian method and the Lagrangian-Eulerian are used for dispersed phase so it can be used for bulk condensation for example but I never seen people use it for surface condensation, because of the form of the droplets which are not spherical ( they are on the wall).

So I don't know how to simulate my problem, I really want to see real water droplets growing on the wall. can anybody help me?

Thank you in advance,

Miki

-

Miki12 · June 4, 2014, 03:33

Hello everyone,

Nobody to help me? A little piece of advices will be really appreciated.

Thank you,
Miki12

May 19, 2014, 10:01	Choose of the good multiphase flows model	#1
Miki12 New Member Join Date: Jan 2014 Posts: 13 Rep Power: 12	Hi everybody, I would like to know your opinion about a question concerning multiphase flows. I want to simulate with CFD the condensation of little dropletson a surface. I've seen in the User guide three methods: the Eulerian-Eulerian approach, the Lagrangian-Eulerian approach and the Volume Of Fluid approach but any of these three methodsseems to be the good one for my problem: - the Volume of fluid method is good to capture the free surfaces, I suppose that if I want to use it to catch my droplets, I need a huge amount of cells, am I right? - the Eulerian-Eulerian method and the Lagrangian-Eulerian are used for dispersed phase so it can be used for bulk condensation for example but I never seen people use it for surface condensation, because of the form of the droplets which are not spherical ( they are on the wall). So I don't know how to simulate my problem, I really want to see real water droplets growing on the wall. can anybody help me? Thank you in advance, Miki - Last edited by Miki12; June 16, 2014 at 10:27.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
What model of turbulence choose to study an external aerodynamics case	raffale	OpenFOAM	0	August 23, 2012 06:45
How to model Eulerian multiphase and Species Conservation at the same time?	onlyacan	STAR-CCM+	3	March 14, 2012 09:28
Selecting the appropriate multiphase model and radiation model	panos_metal	FLUENT	0	June 18, 2010 08:58
multiphase model, water in air?	bugra	Main CFD Forum	10	January 2, 2010 14:09
MULTIPHASE - FREE SURFACE & MIXTURE MODEL	Aris	FLUENT	3	April 28, 2009 12:46

June 4, 2014, 03:33		#2
Miki12 New Member Join Date: Jan 2014 Posts: 13 Rep Power: 12	Hello everyone, Nobody to help me? A little piece of advices will be really appreciated. Thank you, Miki12