Question 7.P.14: Water flows out from a storage tank through a pipe of 50 mm ......
Water flows out from a storage tank through a pipe of 50 mm dia. at a rate of 9.82 l/s. Determine the loss of head at entrance if it is (i) bell mounted (ii) square edged and (iii) reentrant.
Step-by-Step
Refer section 7.12
(i) In this case the loss coefficient is 0.04
u = 4Q/πD² = 4 × 9.82/(1000 × π × 0.05²) = 5 m/s
∴ h_{f} = 0.04 × 5²/2 × 9.81 = 0.051 m.
(ii) In this case loss coeffcient is 0.5. ∴ h_{f} = 0.5 × 5²/2 × 9.81 = 0.637 m
(iii) The loss coefficient in this case = 0.8 ∴ h_{f} = 0.8 × 5²/2 × 9.81 = 1.019 m
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