4.2.1 - Rate of Change of Mass
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Practice Questions
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What does the principle of mass conservation state?
💡 Hint: Think about how matter behaves in physics.
Define the continuity equation.
💡 Hint: Consider how fluids flow in and out of a control volume.
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Interactive Quizzes
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What does the mass conservation principle state?
💡 Hint: Consider basic laws of science about matter.
The continuity equation in fluid dynamics is expressed as?
💡 Hint: Think about the relationship between mass and fluid flow.
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Challenge Problems
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Given a scenario where fluid enters a control volume at a specific rate but three outlets are present. Calculate the net mass flow rate and determine the divergence.
💡 Hint: Start with the formula for mass flow rates at the inlets and outlets.
A pipe system reduces in diameter. Explain how the continuity equation applies, and calculate the expected change in velocity if density remains constant.
💡 Hint: Use the equation A1V1 = A2V2 to relate areas and velocities.
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