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multiphase flow model question

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Old   April 24, 2016, 19:10
Question multiphase flow model question
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This is my first time using this forum. I'm looking the ANSYS help manual to see how the multiphase flows models are implemented in Fluent or CFX, and I found something confusing.

Section 17 talks about mixture model theory. Section 17.4.3~17.4.10 talks about its field equations and some relevant constitute equations. Section 17.4.11 talks about some models of interfacial area concentration. However, I didn't find where interfacial area concentration is used in the mixture model. So I'm confused why interfacial area concentration is introduced here in this section. Did I missed something?
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