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Detailed Chemical reaction over combustion model

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Old   April 22, 2017, 13:07
Default Detailed Chemical reaction over combustion model
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jay chhatbar
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i am doing duel fuel (hydrogen-diesel) simulation. i have done training course in AVL Fire (2014.2) there i was informed that i cannot use any combustion model for simulation of pure duel-fuel (energy share less then 90% by gas) so i used detailed chemical gas phase reaction for simulation. now i have couple of questions
1) without activating combustion how can i get phi-t graphs.
2) i want to emphasize on why i have to use detailed gas phase reaction over combustion models in my project thesis so where can i get advantaged of gas phase reaction over combustion model (any combustion model available in avl fire).
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Old   June 23, 2017, 13:13
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Venkatesh V
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With GGPR model Equivalence Ratio is not defined in the solver. You could write formula to create a derived variable based on fuel and O2 species mass fractions.

If you are looking for Equivalence Ratio which is not consumed by combustion ( similar to mixture fraction) then you need use additional passive scalar and user function to calculate equivalence ratio.
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