Fox and McDonald's Introduction to Fluid Mechanics
9th Edition
ISBN: 9781118912652
Author: Philip J. Pritchard, John W. Mitchell
Publisher: WILEY
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Chapter 10, Problem 68P
The velocity of the water jet driving this impulse turbine is 45 m/s. The jet has a 75-mm diameter. After leaving the buckets the absolute velocity of the water is observed to be 15 m/s in a direction 60° to that of the original jet. Calculate the mean tangential force exerted by the jet on the turbine wheel and the speed (rpm) of the wheel.
P10.68
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Pelton wheel has a mean bucket speed of 10 m/s with a jet of water flowing at the rate of 700 lps under a head of 30 m. The buckets deflect the jet through an angle of 160°. Calculate the power given by water to the runner and the hydraulic efficiency of the turbine. Assume the coefficient of nozzle as 0.98.
A Pelton wheel has a mean bucket speed of 10 meters per second with a jet of water flowing at a rate of 700 liters/s under a
head of 30 meters. The buckets deflect the jet through an angle of 160°. Calculate the power given by water to the runner and
the hydraulic efficiency of the turbine. Assume co-efficient of velocity as 0.98.
How Vt=Vr × sin (70°) ? i need explanation regarding it.
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Chapter 10 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
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