Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion

Discussion Forum : Hydraulics and Fluid Mechanics - Section 5 (Q.No. 28)
28.
The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)
Q = Cd x bH1 2gh
Q = Cd x bH2 2gh
Q = Cd x b ( H2 - H1 ) 2gh
Q = Cd x bH 2gh
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Saurabh Mangal said:   2 years ago
H2 = Height of water (downstream) above the BOTTOM of the orifice.
H1 = Height of water (upstream) above the TOP of the orifice.

H2 - H1 = Height of the orifice (which indicates the area of the orifice occupied).
H = Difference in water level, which regulates the velocity of the fluid through the orifice.

Uday said:   8 years ago
C should have been H1-H2.

D is the correct answer.

A.jay said:   8 years ago
What is the difference between [c] and [d]?

H2-H1= H.

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