Multiple species - Problem

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello everyone,

 

I have a simualation which is not created by Acusolve (Picture 1). Now i want to replicate this simulation by using Acusolve (Picture 2) and I need some informations to realize that.

 

The problem-description is attached below (Pic 1).

 

As you can see (at the Picture 2), the water in the left side is not going down (from the top) and even no air comes afterwards. Does this depend on my surface bc??? What i'm doing wrong?

 

thanks

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<?xml version="1.0" encoding="UTF-8"?>post-33616-0-89238500-1417983067_thumb.p

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Answers

  • ydigit
    ydigit
    Altair Employee
    edited December 2014

    This kind of simulation requires a multiphase solver (e.g. Volume of Fluid). AcuSolve has a multi-species solver, meaning two miscible fluids can be simulated (e.g. alchohol-water, air-CO2, etc).

  • alpharays786
    alpharays786 Altair Community Member
    edited December 2014
    Altair Forum User said:

    This kind of simulation requires a multiphase solver (e.g. Volume of Fluid). AcuSolve has a multi-species solver, meaning two miscible fluids can be simulated (e.g. alchohol-water, air-CO2, etc).

     

    Hi ydigit! Means that the problem of immiscible fluids can't be simulate? And, cases which involve two different phases such as water-air also cannot? 

     

    Hi ayriz! Do you still proceed above simulation with AcuSolve?

     

    Thanks

  • ydigit
    ydigit
    Altair Employee
    edited December 2014

    AT the moment immiscible fluids are not feasible.

    Water - Air Interface can be simulated with 'Free Surface' approach. Check out 'Sloshing' and 'Rolling Ship' workshops from : http://training.altairuniversity.com/analysis/cfd/cfd-acusolve-workshops/

     

    Note that there are some approximations used with the free surface approach. They may or not may not be suitable for the desired simulation.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2014
    Altair Forum User said:

    Hi ydigit! Means that the problem of immiscible fluids can't be simulate? And, cases which involve two different phases such as water-air also cannot? 

     

    Hi ayriz! Do you still proceed above simulation with AcuSolve?

     

    Thanks

     

    hey apharays,

     

    i'm not working with acusolve anymore. multiple species-problem was a part of my bachelor-thesis.

     

    sry

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