define a fast reaction in pre -- CFD Online Discussion Forums

March 9, 2006, 16:11	define a fast reaction in pre	#1
Gab Guest Posts: n/a	Hi, all In a problem I am dealing with, there is a chemical species A, which can react with another compound B(which already in water)immediately after injecting to water. Can someone suggest how to deal with such a fast reaction. The reaction of A is in first order kinetics, however it may be not possible to use a source term to model it because of very samll time scale. Thanks! Best regards! Gab

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