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March 14, 2019 at 4:24 am
Abhi1311
SubscriberHello! I am trying to mix 2 gas which are ch4 and air to simulate a gas flow through a chamber containing one inlet and one outlet. For my simulation i need my mixed gas with a concentration like 80%ch4 and 20%air. How can i create my material like that as well as what steps i need to follow or options i need to select to complete my simulation. Also it would be helpful how should i specify my boundary condition?
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March 14, 2019 at 5:05 pm
Rob
Forum ModeratorOn the inlet set the volume fraction to be 20% air and assuming you set up the species model correctly the remainder will be methane. That's an odd mixture, what are you trying to model?
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March 15, 2019 at 5:27 am
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March 15, 2019 at 9:36 am
Rob
Forum ModeratorPerform as in burn, or flow? If it's the latter you don't need the species model if it's already mixed, you just need to alter the material properties to reflect those of the mixture.Â
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March 15, 2019 at 10:57 am
Abhi1311
SubscriberPerform as in flow. The step where you mentioned to alter the properties i understood but will i be able to select and specify concentration if i don't select species transport as on the material properties dialogue box i am not able to select concentration.
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March 15, 2019 at 11:26 am
Rob
Forum ModeratorNo, but if you don't need to solve for species there's no benefit to including the additional equations in the solve. It'll be more (cpu) efficient to calculate the mixture properties manually and then compare the results of the single species model.Â
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