Practice Difference Between Thermodynamic And Mechanical Pressure (3.2) - Viscous Fluid Flow (Contd.)

Practice: Difference between thermodynamic and mechanical pressure

Lesson 3.2Viscous Fluid Flow (Contd.)

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9 questions

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Exercise
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6 sample questions

Question 1.
Define mechanical pressure.
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Think about how internal stresses contribute to this definition.
Question 2.
What does the Stokes Hypothesis state?
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Focus on the specific conditions outlined in the hypothesis.
3Question 3.
What is mechanical pressure derived from?
- A sum of temperatures
- A sum of normal stresses
- Ambient pressure changes
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Think about the formula for mechanical pressure.
4Question 4.
Incompressible flow means divergence of velocity is:
- True
- False
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Relate this condition to fluid flows in engineering.
Question 5.
A fluid flows through a pipe, and you measure τxx = 4 MPa, τyy = 3 MPa, τzz = 2 MPa. Calculate the mechanical pressure and discuss its significance.
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Remember to sum the individual stresses before applying the pressure formula.
Question 6.
Explain how the Stokes Hypothesis could simplify calculations in hydraulic engineering under certain fluid conditions.
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Reflect on scenarios in typical hydraulic applications where fluid state remains relatively stable.

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