# mass - ME 201 Thermodynamics Handout: Conservation of Mass...

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1 ME 201 Thermodynamics Handout: Conservation of Mass The general form of our conservation of mass equation is: = outflows out inflows in sys m - m dt dm where per time system e within th mass in change : dt dm sys system the to inflows mass the all of sum : m inflows in system the from outflows mass the all of sum : m outflows out Occasionally, it will be useful to explode the derivative in our equation to differences, so we may write = - outflows out inflows in final final m - m t m m where m final : final mass in system after process m initial : initial mass in system before process t: time change during process

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ME 201 Thermodynamics 2 Continuity Relations When a flowing system, such as a river or jet aircraft engine, is considered it is convenient to introduce some flow parameters in addition to the mass flow rate. We define ) m (e.g., area sectional - cross flow : A m/s) (e.g., velocity fluid : v ) kg/m (e.g., density fluid : /s) m (e.g., rate
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## This note was uploaded on 07/25/2008 for the course ME 201 taught by Professor Somerton during the Spring '06 term at Michigan State University.

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mass - ME 201 Thermodynamics Handout: Conservation of Mass...

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