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Help regarding in preparing an adsorptoin surface

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Old   December 27, 2008, 11:04
Default Help regarding in preparing an adsorptoin surface
  #1
Kumar
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Hello ,

I have prepared an geometry and and mesh for study of dispersion of some flue gas .As a part of the project i need to one of the surface to be acting as a adsorbing surface of one of the gas present in the gas mixture . Can anyone help me on this .
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Old   December 30, 2008, 02:17
Default Re: Help regarding in preparing an adsorptoin surf
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zongtwi
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I guess you will need to use the surface reaction capability in FLUENT.

If you are already looking at gas mixtures, I'm assuming you already have the species transport option turned on. Choose to have volumetric reaction in the Species Transport window, and once that is done, you can see additional options available. Choose the Wall Surface reaction. You will then need to define separate species from the gas phase to the species adsorbed by the wall. Example: If you have adsorption of water vapour on a surface, you will need to specify two species, one for H2O vapour, one for H20 adsorbed. You will then define a reaction of H20(vapour)-->H20(adsorbed) in the reaction mechanism definition form. You can specify the rate of adsorption etc accordingly.

If you use the DPM to model your adsorbed gas species, you can specify what happens to a particle once it hits a wall. You can choose either trap (the particle will be adsorbed on the wall), escape (the particle will just be removed from the domain), or reflect (the particle will bounce back into the domain).

Hope that helps.
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