Upload
rana-bustami
View
213
Download
0
Embed Size (px)
Citation preview
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 1/14
Hydraulics I
•
• •
•
o •
•
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 2/14
p p p p p
p p
ylll y pl y pF
p pl y pl y pF
z y xn
zn
n z z
xnn x x
sincos2
1coscos0
sinsin0
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 3/14
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 4/14
•
sin)(
0
l A A p p A p
F F F
F
weight right left
l
dl
dz
dl
dp
l
z
l
p
orsin
dz
dp
• γ dz
dp
head)ic(piezometrconstant z ph
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 5/14
Atmospheric pressure
Reference
Absolute zero Reference
P B
(Vaccum)
Gauge
pressure
Vaccum
P B
(Absolute
pressure)
Abs. pressure
Local
atmospheric
pressure
P A
(Absolute
pressure)
P A
(Gauge)
B
A
•
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 6/14
•
•
•
•
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 7/14
•
•
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 8/14
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 9/14
•
2
2
211
1
2112
2121
/ 50 0,14 2
)20)(9810)(85.0()04.0(
4
20 0
)(
)(
)(
m N
z zSG A
F
z z p p
z z p p
w
oi l
oi l
N F
A pF
11 9,1
)1.0)(4
(50 0,14 2
2
2222
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 10/14
•
Dmw A ph p **1.0
0 D A P p
cmh
hm
w
33.33
1*1.0
*1.0
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 11/14
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 12/14
•
•
•
•
•
•
•
•
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 13/14
•
•
•
•
•
•
•
•
7/23/2019 ch02-a
http://slidepdf.com/reader/full/ch02-a 14/14