Question
Asked Nov 6, 2019
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Problem 3:

Water issues from a hole in a large tank, as shown in the attached figure.
Assuming frictionless flow, find L.

h2 = 5 m
Water
h1 3 m
L
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h2 = 5 m Water h1 3 m L

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Expert Answer

Step 1

Given data,

Height h1= 3 m

Height h2= 5 m

h2=5 m
Water
h, = 3 m
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h2=5 m Water h, = 3 m

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Step 2

For a small orifice area the velocity at the orifice can be given as,

g
V L
2h,
Also velocity can be given as,
V C,2gh
Where C, is the coefficient of velocity
g
.L
=C,2gh,
2h
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g V L 2h, Also velocity can be given as, V C,2gh Where C, is the coefficient of velocity g .L =C,2gh, 2h

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Step 3

Taking coefficient of velocity, Cv as 1 an...

g
. L
V2h
2gh
10g
6
g
L
2 x3
1
=10
2xg x5
C = 10 x6
V10g
L
6
L =60
Squaring both sides,
L=160
-K-
L 7.75 m
-(og
L
6
help_outline

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g . L V2h 2gh 10g 6 g L 2 x3 1 =10 2xg x5 C = 10 x6 V10g L 6 L =60 Squaring both sides, L=160 -K- L 7.75 m -(og L 6

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Mechanical Engineering

Fluid Mechanics

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