[Ineedyourhelp]

Very sorry. My English is not very well, I hope everybody could understand what I said.
I have simulated three phases flow, water(continuous phase), oil(continuous phase) and gas(dispersed phase). The reactor is full of 4/3 of water and 4/1 of oil. The gas has been injected in bottom surface by using velocity inlet boundary, and escaped from top surface which be set as degassing condition. So, there are two regions has been created, which has been connected by a interface (GGI).
Between water phase and oil phase, the free surface model has been activated. Interphase transfer is set as free surface and drag force coefficient is set at 0.44.
Between water/oil phase and gas phase, Interphase transfer is set as particle model, the drag force and non-drag force has been activated.
In my model, I have used the homogeneous turbulence model(k-e) and considered the buoyancy model.
However, the fatal error always confused me as follows, I really need someone's help, Very thanks!

ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| Stopped in routine ASS_MSF_BFORCE

[alirezame]

Hello,

it seems that the problem is your buoyancy model. I recommend to double check the buoyancy option and gravity values, density references in both regions.

[Ineedyourhelp]

Originally Posted by alirezame

Hello,

it seems that the problem is your buoyancy model. I recommend to double check the buoyancy option and gravity values, density references in both regions.

Hi, Alirezame
Very thanks for your reply. Yes, maybe that you said is also a problem. But, there are two continuous phases (oil and water) in my model. The gas bubble which is treated as dispersed phase rise up and cross the two domians. because of homogeneous turbulence model, the fluid buoyancy model is based on density difference, and I don't consider of the buoyancy turbulence. The gravity value is -9.81 and reference density is same as the density of water. As you know, it is better to choose the continuous phase density as the reference density, but there are two continuous phases in my model, how to deal with it? In order to initialize the reactor is full of 4/3 of water and 4/1 of oil at the beginning, I create two domians. But two domian about the basic setting and fluid models are same. So how to solve this?

[alirezame]

can you put a figure of the domains with axis here?

In my opinion, reference density can be the averaged density according to the amount of each continuous fluid in the zone, like:
(0.75 * density_water + 0.25 * density_oil)_inlet