Pumps and valves are primary power and control devices in water supply piping systems. A collaborative operational scheme is very important for a series pump–valve system to decrease the transient pressure during the startup process. In order to analyze the influence of the operational time differences between the pump and the valve on the transient process, a complicated pump system was numerically simulated using the method of characteristics (MOC). The boundary conditions of the pump and the valve were separately established by equating an auxiliary element in the discrete mesh. The transient pressure, pump speed, and flow were studied for various time differences and the valve opening process for the series pump–valve startup process. Furthermore, an optimal collaborative scheme was presented to prevent inverse rotation and overpressure during the startup process. The results show that a reasonable time-lapse and fast opening can prevent the backward flow and reverse rotation, as well as control the transient maximal pressure during the system startup process.

References

References
1.
Sadafi
,
M.
,
Riasi
,
A.
, and
Nourbakhsh
,
S. A.
,
2012
, “
Cavitating Flow During Water Hammer Using a Generalized Interface Vaporous Cavitation Model
,”
J. Fluids Struct.
,
34
, pp.
190
201
.
2.
Wang
,
R. H.
,
Wang
,
Z. X.
,
Wang
,
X. X.
,
Yang
,
H.
, and
Sun
,
J.
,
2014
, “
Pipe Burst Risk State Assessment and Classification Based on Water Hammer Analysis for Water Supply Networks
,”
J. Water Resour. Plann. Manage.
,
140
(
6
), p.
04014005
.
3.
Dazin
,
A.
,
Caignaert
,
G.
, and
Bois
,
G.
,
2007
, “
Transient Behavior of Turbomachineries: Applications to Radial Flow Pump Startups
,”
ASME J. Fluids Eng.
,
129
(
11
), pp.
1436
1444
.
4.
Duplaa
,
S.
,
Coutier-Delgosha
,
O.
,
Dazin
,
A.
,
Roussette
,
O.
,
Bois
,
G.
, and
Caignaert
,
G.
,
2010
, “
Experimental Study of a Cavitating Centrifugal Pump During Fast Startups
,”
ASME J. Fluids Eng.
,
132
(
2
), p.
021301
.
5.
Li
,
Z. F.
,
Wu
,
P.
,
Wu
,
D. Z.
, and
Wang
,
L.
,
2011
, “
Experimental and Numerical Study of Transient Flow in a Centrifugal Pump During Startup
,”
J. Mech. Sci. Technol.
,
25
(
3
), pp.
749
757
.
6.
Tian
,
W. X.
,
Su
,
G. H.
,
Wang
,
G. P.
,
Qiu
,
S.
, and
Xiao
,
Z.
,
2008
, “
Numerical Simulation and Optimization on Valve-Induced Water Hammer Characteristics for Parallel Pump Feedwater System
,”
Ann. Nucl. Energy
,
35
(
12
), pp.
2280
2287
.
7.
Karadzic
,
U.
,
Bulatovic
,
V.
, and
Bergant
,
A.
,
2014
, “
Valve-Induced Water Hammer and Column Separation in a Pipeline Apparatus
,”
Strojniski Vestn.
,
60
(
11
), pp.
742
754
.
8.
Wylie
,
E. B.
, and
Streeter
,
V. L.
,
1978
,
Fluid Transients
,
McGraw-Hill
,
New York
.
9.
Ghidaoui
,
M. S.
,
Zhao
,
M.
,
McInnis
,
D. A.
, and
Axworthy
,
D. H.
,
2005
, “
A Review of Water Hammer Theory and Practice
,”
ASME Appl. Mech. Rev.
,
58
(
1
), pp.
49
76
.
10.
Chaudhry
,
M.
,
1987
,
Applied Hydraulic Transients
,
Van Nostrana Reinhold
,
New York
.
11.
Wylie
,
E. B.
,
Streeter
,
V. L.
, and
Suo
,
L.
,
1993
,
Fluid Transients in Systems
,
Prentice Hall
,
Englewood Cliffs, NJ
.
12.
Izquierdo
,
J.
, and
Iglesias
,
P.
,
2004
, “
Mathematical Modelling of Hydraulic Transients in Complex Systems
,”
Math. Comput. Modell.
,
39
(
4
), pp.
529
540
.
13.
Jo
,
J. C.
,
2010
, “
Numerical Simulation of Pressure Transients in a PWR Main Steamline System Due to Quick Operations of Pressure Relief Valve
,”
ASME
Paper No. PVP2009-77410.
14.
Wan
,
W. Y.
, and
Huang
,
W. R.
,
2011
, “
Investigation on Complete Characteristics and Hydraulic Transient of Centrifugal Pump
,”
J. Mech. Sci. Technol.
,
25
(
10
), pp.
2583
2590
.
15.
Kaliatka
,
A.
,
Vasnoras
,
M.
, and
Valincius
,
M.
,
2014
, “
Modelling of Valve Induced Water Hammer Phenomena in a District Heating System
,”
Comput. Fluids
,
94
, pp.
30
36
.
16.
Vakil
,
A.
, and
Firoozabadi
,
B.
,
2009
, “
Investigation of Valve-Closing Law on the Maximum Head Rise of a Hydropower Plant
,”
Sci. Iran. Trans. B
,
16
(
3
), pp.
222
228
.
17.
Bazargan-Lari
,
M. R.
,
Kerachian
,
R.
,
Afshar
,
H.
, and
Bashi-Azghadi
,
S. N.
,
2013
, “
Developing an Optimal Valve Closing Rule Curve for Real-Time Pressure Control in Pipes
,”
J. Mech. Sci. Technol.
,
27
(
1
), pp.
215
225
.
18.
Stephenson
,
D.
,
1997
, “
Effects of Air Valves and Pipework on Water Hammer Pressures
,”
J. Transp. Eng.
,
123
(
2
), pp.
101
106
.
19.
Zhang
,
K. Q.
,
Karney
,
B. W.
, and
McPherson
,
D. L.
,
2008
, “
Pressure-Relief Valve Selection and Transient Pressure Control
,”
J. Am. Water Work Assoc.
,
100
(
8
), pp.
62
69
.
20.
Sang-Gyun
,
K.
,
Kye-Bock
,
L.
, and
Kyung-Yup
,
K.
,
2015
, “
Water Hammer in the Pump-Rising Pipeline System With an Air Chamber
,”
J. Hydrodyn.
,
26
(
6
), pp.
960
964
.
21.
Esmaeilzadeh
,
F.
,
Mowla
,
D.
, and
Asemani
,
M.
,
2009
, “
Mathematical Modeling and Simulation of Pigging Operation in Gas and Liquid Pipelines
,”
J. Pet. Sci. Eng.
,
69
(
1–2
), pp.
100
106
.
22.
Afshar
,
M. H.
,
Rohani
,
M.
, and
Taheri
,
R.
,
2010
, “
Simulation of Transient Flow in Pipeline Systems Due to Load Rejection and Load Acceptance by Hydroelectric Power Plants
,”
Int. J. Mech. Sci.
,
52
(
1
), pp.
103
115
.
23.
Yu
,
S. O.
, and
Jo
,
J. C.
,
2007
, “
Analysis on Transient Piping Pressure and Force Caused by High Pressure Steam Flow Disturbances
,”
Nucl. Eng. Des.
,
237
(
3
), pp.
260
267
.
24.
Meng
,
H. B.
,
Liu
,
Y.
, and
Li
,
Y.
,
2012
, “
Experiment on Water Hammer Protection Performances of the Shuttle Check Valve in Multi-Pump Parallel Connection System
,”
Appl. Mech. Mater.
,
192
, pp.
37
41
.
25.
Yao
,
E.
,
Kember
,
G.
, and
Hansen
,
D.
,
2015
, “
Analysis of Water Hammer Attenuation in Applications With Varying Valve Closure Times
,”
J. Eng. Mech.
,
141
(
1
), p.
04014107
.
26.
Wan
,
W.
, and
Huang
,
W.
,
2013
, “
Investigation of Fluid Transients in Centrifugal Pump Integrated System With Multichannel Pressure Vessel
,”
ASME J. Pressure Vessel Technol.
,
135
(
6
), p.
061301
.
27.
Wan
,
W. Y.
,
Huang
,
W. R.
, and
Li
,
C.
,
2014
, “
Sensitivity Analysis for the Resistance on the Performance of a Pressure Vessel for Water Hammer Protection
,”
ASME J. Pressure Vessel Technol.
,
136
(
1
), p.
011303
.
28.
Bloch
,
H. P.
,
2004
, “
Reassess Your Pump Startup and Shutdown Procedures
,”
Hydrocarbon Process.
,
83
(
8
), pp.
11
12
.
29.
Kwon
,
H. J.
, and
Lee
,
J. J.
,
2008
, “
Computer and Experimental Models of Transient Flow in a Pipe Involving Backflow Preventers
,”
J. Hydraul. Eng.
,
134
(
4
), pp.
426
434
.
30.
He
,
L.
,
Wang
,
Z.
,
Kurosawa
,
S.
, and
Nakahara
,
Y.
,
2014
, “
Resonance Investigation of Pump-Turbine During Startup Process
,”
IOP Conf. Ser. Earth Environ. Sci.
,
22
(
2013
), p.
032024
.
31.
Trivedi
,
C.
,
Cervantes
,
M. J.
,
Gandhi
,
B. K.
, and
Dahlhaug
,
O. G.
,
2014
, “
Transient Pressure Measurements on a High Head Model Francis Turbine During Emergency Shutdown, Total Load Rejection, and Runaway
,”
ASME J. Fluids Eng.
,
136
(
12
), p.
121107
.
32.
Holler
,
S.
, and
Jaberg
,
H.
,
2013
, “
A Contribution to Water Hammer Analysis in Pumped-Storage Power Plants
,”
Wasserwirtschaft
,
103
(
1–2
), pp.
78
84
.
33.
Rohani
,
M.
, and
Afshar
,
M. H.
,
2010
, “
Simulation of Transient Flow Caused by Pump Failure: Point-Implicit Method of Characteristics
,”
Ann. Nucl. Energy
,
37
(
12
), pp.
1742
1750
.
34.
Marchal
,
M.
,
Flesh
,
G.
, and
Suter
,
P.
,
1965
, “
The Calculation of Water-Hammer Problems by Means of the Digital Computer
,”
ASME
International Symposium on Waterhammer in Pumped Storage Projects
,
Chicago, IL
, Nov. 7–11, pp.
168
188
.
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