When to use mass-weighted average quantity

Could anyone let me know when to use a mass-weighted average. I'm calculating average value of scalar dissipation rate. Is it suitable?

Answers

  • RobRob UKForum Coordinator

    We use mass and area weighted depending on what's needed.

    For an outlet temperature (flow boundary) I'd use mass weighted. On a wall surface for temperature I'd use area weighted.

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