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Solving Convection-Diffusion-Reaction Equations

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Old   June 18, 2018, 06:24
Exclamation Solving Convection-Diffusion-Reaction Equations
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Alireza Jafarinia
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Dear friends,
I am going to solve convection-diffusion-reaction equations in multiphase flow using OpenFOAM 5. As far as I know it is possible to use reactingMultiphaseEulerFoam solver, but the point is that there is no solved tutorial similar to my case. I would like to know your recommendations about how to start. Which tutorial do you suggest to modify?
There is another solver reactingTwophaseEulerFoam which solves convection-diffusion-reaction in two phase. Currently I think it is possible to start with this two phase flow problem or a tutorial in multiphase flow without solving reaction like multiphaseEulerFoam. I am really confused how to start and I appreciate any kind of help. My equation are related to biochemical reactions in multiphase flow with several species like thrombus formation in blood flow.
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Old   June 19, 2018, 03:10
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manu ebn
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Hi jafarinia

Even if you would like to start right from the top, my general purpose for working with new (unknown) solvers is:
  • Set up a simple geometry (maybe only with blockMesh)
  • Build a simple two-phase flow
  • Verify your solution
  • Add a reaction to it
  • Verify your solution
I made the experience that it's worth to invest this additional time to preliminary studies.


Furthermore: What are the different phases you working with? Remember: Blood is a non-newtonian fluid. What is the approx. ratio of the two phases?


Best
Triggin
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Old   June 19, 2018, 04:47
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Alireza Jafarinia
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Thank you. Well, the problem is the formation of thrombus in blood. It means that at first we have only fluid which is blood; then after biochemical reactions a solid phase might form near the wall which is the thrombus.
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convection, diffusion, reactingmultiphaseeuler, reactingtwophaseeuler, reaction

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