AIM: - To calibrate to given notch and to determine it’s co-efficient of discharge Cd of 600 or 900 notches. Instruments: . !otc !otchh A""ar ""arat atus us #. $ie% $ie%om omet eter er or or "oin "ointt &aug &augee '. (to" (to" )atc )atchh * (cal (calee Theory:- The discharge
through +-notch +-notch is given b,.
/1 Cd 2#g tan 3# 41#
$utting 5
/1 Cd 2#g tan 3# 5 =
ischarge 541#
or
4
1 #
7, measuring the head of )ater 84 over the sill of the notch If
4 4# 4 d t A
Initial reading at the sill of notch inal reading at the sill of notch 4e 4ead of of )a )ater ov over si sill of of no notch; 4 44#-4 e"t e"thh of coll collec ecti tion on of )at )ater in meas measur uriing tan< tan< Time for ==== ====.. ==== Area of measuring tan0 cm ' Area of measuring tan< A @F7 6'F>> #GG#cm# Ta"&'ar Co'o&(n )or Tr%ang&'ar not*h o) +, , -'. No
Head o) ater
H5/2
Log H
0ea#&r%ng tan1
FR
.
#./0
H FR3IR
1.>
Ad =
t
Log
! =
#.G/
/./9
H
5/2
Cd =
15! 8 2g tan θ/2
e"th d Timet 6G.G6
0.G1
1 1 1 1
#'J #>J ##J #'J
60#.6
0.61
#.
#.>0
1.00
11.90
0.G0
1 1 1 1
#/J #9J #/J #/.''J
>/9.#'
#.69
/.G1
Avg 6>.1
'.
(am"le Calculation .
4
- I #./-6.> 1.> 6G.G6 @og 4 0.G1
41# -=
Ad t
#. 5 =
'.
#GG# × 1
=
#'
4
Cd =
=
1 #
=
60#.6 cm
=
/./9
60#.6 6G.G6
1 5 / tan 3 # g
=
1 × /./9 #0>.6
d1
'
sec
=
0.61
>.
&ra"h Calculation rom 41# #1
##1 5 =
Cd =
41 #
=
##1 #1
1 5 / tan 3 # g
rom #
=
=
9
1 × /./9 60 / tan # × 9/ #
=
0.6>
'1 / × 0.1GG × >>.'
=
0.6G
t #'
@og 5 0.9# n=
@og >.1 @og 4 .>
@og- − @og5 @og4
=
>.1 − 0.9# .>
=
#.16
54n 94#.16 Tri"e%oidal notch Tri"e%oidal notch Cd Cd ect D Cd Tri
FRICTION THROUGH 4I4 FLOW Minor losses in "i"e fitting a""aratus
AIM:- To determine the various losses of head the to determine the constant . (udden enlargement #. (udden Contraction * '. At 900 bend In#tr&(ent:3
$i"e riction a""aratus )ith a "i"e having fitted )ith enlarger and reducer of 900 bend and elbo). Theory:3 +ariable velocit, head loss
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