Hello ,
I am a new member of Openfoam extend project. I have been using openfoam for the past three years. I worked on interFoam.
recently I came across the presentation of Holger Marschall about VOF and TFM hybrid approach.

My question is is this solver available in openfoam extend version and if yes what is the name of the solver.

Also is this solver useful for high speed liquid jet simulations.

Another question I also saw about the VOF-PLIC implementation in openfoam extend project. Is it also available.

I would like to try openfoam extend. Can anybody tell me about the multiphase flow modeling solvers of openfoam extend.

thanks
regards
K.SUresh kumar

Dear Suresh Kumar,

Happy to see the first question in this forum..

I think you are referring to these presentation by Holger Marshall.
cfdcre5.org/cfdcre5-Marschall-2.pdf
cfdcre5.org/cfdcre5-Marschall-1.pdf

I am also relatively new to this group.
I hope you find an answer here in this group.

Thanks & Regards
Unnikrishnan.

Dear Suresh Kumar,

welcome in the Extend Project!

As you might have seen: the presentations I gave at CFDCRE5 a quite old and, hence, substantial enhancements in both theory and code were done inbetween.

There are two different approaches you might be interested in:

1. hiresFoam - Hybrid Interface RESolving Two-Fluid Model


2. voFoam - VoF method with geometric reconstruction

The first solver is based on the well established two-fluid model (Eulerian Eulerian method). However, it is based on a scale-consistent approach (conditional volume-averaging, immersed interface concept), which enables to solve for mixed two-phase flow types at multiple interfacial scales (i.e., dispersed and segregated flow type coexisting in flow domain). This approach is well documented in my PhD thesis, which I am going to publish these days. As for the release, I think we first need to go for a industrial scale validation (basic verification and validation are finished).

The second solver is based on the single-field assumption (as all VoF codes) and utilizes a geometric reconstruction of the interface based on the PLIC method (Piecewise Linear Interface Calculation). The code is currently under development at the Center of Smart Interfaces (CSI, TU Darmstadt), Mathematical Modelling and Analysis group (Prof. Dieter Bothe, Tomislav Maric and me). Indeed, we do plan a release as soon as possible. However, a thourough code verification and validation **is** a prerequisite.

Let's stay in touch via Extend... so you are one of the first to test the new solvers.

best regards,
Holger

Dear Holger Marschall,
Thanks for your reply. I would be very happy to do the validation.
I have few more questions. Recently I saw a presentation about CLSVOF in Openfoam by Kathrin Kissling. If I understand the work is being done in your group.

Could you please let me know if your group people are planning to release this solver in Openfoam extend release and if yes when approximately.

Sorry but I am a bit confused withe the multiphase flow modeling capabilities of Openfoam extend. Could you explain me what solvers for multiphase flow simulation are currently available in openfoam extend and what is planned for the future release.

This will help me to decide whether I can use Openfoam extend for my problem.

thanks regards
K.SUresh kumar

Dear Holger Marschall,

I am currently testing & validating (qualitative high definition video + PIV mesurement) interFoam with an industrial case (bubble column).
The caracteristic of the flow is:
We ~ 300 / Oh ~ 4 /Bo ~ 700
Actually, the validation (interFoam) is not finished, but seem good.
I am also trying to set an another case with thermal efffect, We ~50, Oh ~ 0.5 and Bo ~ 130, but without PIV mesurement for validation.

So i am interested by your voFoam solver and to help you for the validation process.

best regards,
olivier

Dear Olivier,

I am developing the voFoam solver as a part of my PhD topic, so we need to wait until we have published our results in order to release the code. I am currently working on the parallelization. Because the geometrical operations are not directly face(field) based, I need some time to figure out how to make it run in parallel. It should be finished soon. How soon? If you have coded in OpenFOAM® on low level, you know better than to ask.

Best regards,
Tomislav