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Mixing AIR and METHANE

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Old   February 25, 2010, 13:56
Question Mixing AIR and METHANE
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andre alho
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Hi.

What is the procedure to simulate the mixing of these two gases without having any reaction??

Is using the Species Model : Species Transport?
Using Multiphase Model?

Help!!!!!
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Old   February 25, 2010, 20:38
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i pretty sure, you dont have to use multiphase model. As both species are in gaseous phase. With 'species transport', you can study diffusion by turning off reactions. But you have to careful about the properties, diffusivity.
Again, consider practicality of the problem, like H2/O2 mixture you can not just mix it as there are chances of deflagration (or may be detonation) with minute addition of energy. in such case you need to turn on 'reactions'
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Old   March 1, 2010, 09:55
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Quote:
Originally Posted by coalgas View Post
i pretty sure, you dont have to use multiphase model. As both species are in gaseous phase. With 'species transport', you can study diffusion by turning off reactions. But you have to careful about the properties, diffusivity.
Again, consider practicality of the problem, like H2/O2 mixture you can not just mix it as there are chances of deflagration (or may be detonation) with minute addition of energy. in such case you need to turn on 'reactions'
thanks

i used the species transport and turned off the reactions and i did'it
now i can obtain the contours of the concentration of the gas

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Old   February 12, 2013, 20:57
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udin
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when you using this method, are you turn off species equation?or you just turn off volumetric reaction and turn on species equation?
i had similar problem with you, and i'm very appreciated if you answer my question
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Old   February 13, 2013, 00:49
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Quote:
Originally Posted by ariudin View Post
when you using this method, are you turn off species equation?or you just turn off volumetric reaction and turn on species equation?
i had similar problem with you, and i'm very appreciated if you answer my question
Yes, there is no need to enable volumetric. By disabling it no reaction takes place, but species can mix together.
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Old   February 14, 2013, 22:52
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udin
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thanks for your answer
yes i did disable volumetric, but should i do disable species equation on solution by turn off this option?
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