[Yohan]

Hello everyone.


I am Yohan, undergraduate student and new to OpenFOAM and CFD.


Recently I am planning to analyze fluid in the rotating cylinder and I encounter some difficulties to ask.


1. My object is to simulate two miscible (initially stratified) two liquids in the rotating cylinder, but I am not sure about which solver would be suit for the case.

I need to use Dynamic mesh, so that I am looking for interDyMFoam or multiphaseInterDyMFoam. Do these solvers include analysis about miscible liquids? Or should I use twoLiquidMixingFoam and modify code to use dynamic mesh?


2. For making a prism layer, I calculated the y+ value based on my knowledge but it comes to quite large value.

I set free stream velocity as radii x angular velocity,
density and dynamic viscosity as lower fluid properties,
boundary layer length as 2pi times radii
and Y+ value as 30.

is it right? or do I have to convert some values on it?


Thanks in advance and have a nice day everyone.!

[piu58]

I don't know if I understand you right. But it may be easiest simulation a fixed volume and a cylinder with moving walls. A very simple example of this you may find in the lid driven cavity example where one of the wall is moving.

I think the interfoam solver would be appropriate for you.

[Yohan]

Dear Uwe Pilz,


Thank you for your reply!


Before starting the simulation, I am trying to understand VOF method and mathematical analysis.


It seems to be hard for me now, however I am going to understand according to your advice!


Thank you again!



- Yohan