B
sic Hydraulic calculations
AUTHOR: Juan E. González González Fariñas (
[email protected]) (
[email protected]) ###.saferain.$o% in.$o% In association with afe!Rain ." ###.safera
SPREADSHEET SAFE RAIN´S DATA EXAMPLE SOLVED EXAMPLE No. 2
El uso de este Libro es de la completa responsabilidad del usuario .
ET: HEADLOSSES IN PIPES
E,-IALE/T LE/GTH R ITTI/GS PIPE FITTIN*S
'ittin"
Nu&+%!
0."0 0.0 0.#0 0.*" 0.1# 10.00 %.00
+tari,-t elbo. &lar,e radius) +tari,-t elbo. &standard radius) +tari,-t elbo. &s-ort radius) Elbo.s 12
2
'
$ate (al(es
1
$lobe (al(es !n,le (al(es Butterly (al(es
2.%0 0.%0 1.00
C-e0 (al(es Tan0 inlet Tan0 outlet +udden enlar,ement !brupt narro.in,
0.1%
Ot-ers Ot-ers
$
%/ui(a$%nt
0&1
$
%/ui(a$%nt 0&1
0.00 0.00 #.2$ 0.00 0.# 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ,-.22
!%"&PL! $' CURVILI!"R I#!RP$L"#I$ #,-le -el/ h/ l/ , pee he, eiem height the ,m lm.
input data
'i pee he, , ih,ge eiemet , 0. 44 m :et hei ;ite eie :et heigth ,t <"R= LU! cell A27. Q , P ,e i
output data
Jet heigth (m) 0.25 0.50 0.75 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00
Q (lpm) 300 468 550 620 745 850 950 1032 1120 1181 1255 1304
P (m) 0.8 1.5 2.1 2.7 3.6 4.5 5.3 6.1 6.7 7.3 7.9 8.3
CURVILI!"R I#!RP$L"#I$
Jet heigth (m)
Q (lpm)
P (m)
-.
,3
,.45
" !%C!L *+!!# t i the -,e the *,e R,i le '2431315 ieet
th. l,>e ,t !LL$; ell B27 , C27.
2. 5 m
Eample 1. 3etermine t4e pressure 4ead at point 2 i5 pump pro&ides a 6o7 rate o5 point 1. 84ec9 5or i5 4ei:4t o5 t4e ;et reac4es about 1. $ m.
Continue
$1% lpm 7it4 $.% m 4ead pressure at
2. 5 m
So$ution:
T4e 4ead pressure at t4e base o5 t4e no??le
@ein: constant diameter pipe( t4e abo&e eBuation bec
p* &m44a4) 5 &63 7 6*) 8 p3 &m44a4) 7 Σ- totales Initial e9ample data
p3
3 + >*)
$.% +2.% $1%
Note S45 totales .ill be obtained by :!T! ENTR; !N: RE+U"T+ +%EET4
Continue
an be obtained as oints 1 and 2C mesC
2. 5 m
input data output data
STRAIGHT PI a) Introducir datos Q= L t!ai"#t $%n"t# =
D int%!io! = T%&p%!atu!% =
".#2 %0.00 #$.00 0.00! 2%.0
b) Results obtained
&elocit'
0.##"!
(isosity & ν)
0.00#2 0.0% 102(00 0.01* 0.000 10.21" "0.21" 0.%#$
( 2 ) 2" = Reynolds´s Number '= OBJECTIVE FUNCTION TOT!" E#UIV!"ENT "EN$T%
L Tota$ = # ' =
Fro
SPREADSHEET OF HEADLOSSES IN PIPES
E
E,-IALE PIPE FITTIN*S
ls m mm mm &' C)
+tari,-t elbo. &lar,e radius) +tari,-t elbo. &standard radius) +tari,-t elbo. &s-ort radius) Elbo.s 12' $ate (al(es $lobe (al(es !n,le (al(es Butterly (al(es
m/ s
C-e0 (al(es Tan0 i nlet
cm s *
m
dimensionless D21 result is correct only if D22 cell = zero. m m m
above table,
Continue
#' tota$% = -. 36 & 7 -. 5- &.
Tan0 outlet +udden enlar,ement !brupt narro.in, Ot-ers Ot-ers
T LE/GTH R ITTI/GS 'ittin"
Nu&+%!
0."0 0.0 0.#0 0.*" 0.1# 10.00 %.00
2 1
2.%0 0.%0 1.00
0.1% $
%/ui(a$%nt
0&1
$
%/ui(a$%nt 0&1
0.00 0.00 #.2$ 0.00 0.# 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ,-.22
p3 3 + >*)
Finally p* &m44a4) 5 &63 7
p*
From above table,
#' tota
%$ $.% +2.% 0.%# $1%
) 8 p3 &m44a4) 7 - totales
*
,.
= -. 36 & 7 -. 5- &. RETURN
2. 5 m
