Learning Forum

[Milad]

I have a Mixing Case. Liquid Liquid Dispersion, Water(continuous phase), Gasoline(dispersed phase)
Note: Both Phases at the inlets are continuous and after going through the mixer Gasoline becomes dispersed in the water.
I want to capture This Process ( Breakage) and Predict the Max Diameter of Drops in the flow.
I am currently using the Eulerian method to capture the multiphase nature of the flow and k~e for Turbulence.
Questions
1. How to Capture the Breakage from continuous to disperse for Gasoline?
2. How to Find the Maximum Drop Diameter and Distribution of Drops?

[Rob]

With the Eulerian multiphase model you'll see the second phase disperse (or rise/sink) depending on the set up. For break up or agglomeration you'll need population balance. 

[Milad]

[Milad]

Thank You So much for your answer. could you please expand on what you mean by the settings and the rise/sink? I will upload mine.

 

 I want to emphasize that the gasoline is first a continuous phase and then turns into dispersed after passing through the mixer.

keeping that in mind, isn't the population balance method for a condition that we have droplets at the inlet and we define them from the inlet (Which we don't have in this case)? am I wrong?

[Rob]

The Eulerian second phase has a diameter which is either fixed or can vary if using population balance or some other phase change mechanism: each diameter is a different phase if you don't use population balance. What did you set for the phase properties?