Practice Flow Over Notches (7) - Rotodynamic Machines - Fluid Mechanics & Hydraulic Machines

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9 questions

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6 sample questions

Question 1.
Define discharge coefficient (C_d).
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Think about how flow is affected by the notch geometry.
Question 2.
What does the variable H represent in the equations?
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Consider how this relates to the fluid's height.
3Question 3.
What does the variable H signify in the discharge equations?
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Think about how this relates to the pressure of water.
4Question 4.
For a triangular notch, what is included in the formula?
- Only H
- Angle θ
- Width b
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Consider what defines the shape of a triangular notch.
Question 5.
A rectangular notch with a width of 2m has a head of 1m and a discharge coefficient of 0.75. Calculate the flow rate.
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Use the rectangular notch equation and remember to keep units consistent.
Question 6.
How would the discharge change if the angle of the triangular notch increased from 30 degrees to 60 degrees while keeping head constant?
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Refer to the formula for triangular notches and consider the effect of the tangent function.

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