hi all

iam trying to simulate phase inversion in horizontal pipe(two phase L-L flow)..using fluent how can i know where exactly the phase inversion is occuring?

any body has any idea regarding this? i thought if i have the experimental values of the pressure and i know at what length of the pipe the phase inversion is occuring then i can create a plane at that point and monitor the pressure...but how do i get the other pressure values to plot the graph.

can anyone help me out thanks Rashmi

Eulerian approach cannot handle phase inversion. And PBE implementation in FLUENT does not support VOF. That is the reason why I told you ealier you have to focus on bubbly flows only. And it is very hard to find papers in horizontal pipes that to for liquid-liquid in bubbly regime. In G-L there are a few such as those by Iskandrani et al. (1999). KP

On top of it you cannot use 2D to solve horizontal pipes. U have to use 3D to get good and correct results. KP

iam using 3d but how do i proceed for simulating phase inversion.which model i have to use if go for bubbly flow.

Rashmi

hi KP

is there any udf where i can increase the vol fraction of oil after x iterations keeping the velocity of oil and water constant to get the phase inversion. at phase inversion point the effective viscosity of the mixture is greater then the mixture viscosity.so i write a udf for this will it work??

Rashmi