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Does the amount of mass entering a control volume have to be equal to the amount of mass leaving during an unsteady-flow process?
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Whether the amount of mass entering a control volume have to be equal to the amount of mass leaving during an unsteady-flow process or not.
Explanation of Solution
Write the equation for mass balance
Here, mass entering the control volume is
For unsteady flow process rate of change of mass of control volume is zero.
Substitute 0 for
Thus the mass entering the control volume is not equal to the mass leaving the control volume for unsteady flow process.
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Chapter 5 Solutions
Fluid Mechanics: Fundamentals and Applications
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