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Non Linear reaction rate.

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Old   March 16, 2005, 07:30
Default Non Linear reaction rate.
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Burin'
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Can someone explain why the fuel mass reaction rate expressed using the arrhenius law is highly non-linear. I have read that this is because it cannot be easily represented as a funciton of the mean mass fractions and density. I assume this is for RANS? The Arrhenius law looks fairly linear to me. What am I missing? What is the case in LES?

Thank you.
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