Analysis and design of a water pump with accumulators absorbing pressure pulsation in high-velocity water-jet propulsion system

2015 ◽  
Vol 20 (3) ◽  
pp. 551-558 ◽  
Author(s):  
Luo Xiaohui ◽  
Cao Shuping ◽  
Shi Weijie ◽  
He Xiaofeng
Keyword(s):  
High Velocity ◽  
Pressure Pulsation ◽  
Water Jet ◽  
Propulsion System ◽  
Water Pump ◽  
Jet Propulsion ◽  
Analysis And Design ◽  
Velocity Water

Semi-active accumulator absorbing pressure pulsation in high-pressure water-jet propulsion system

2011 ◽  
Vol 225 (9) ◽  
pp. 2052-2061 ◽  
Author(s):  
X Luo ◽  
Z Shi ◽  
J Hu ◽  
Z Niu
Keyword(s):  
High Pressure ◽  
Steady State ◽  
Pressure Pulsation ◽  
Rotation Speed ◽  
Water Jet ◽  
Water Pump ◽  
Jet Propulsion ◽  
Pressure Water ◽  
High Pressure Water Jet ◽  
State Pressure

Large-capacity and high-pressure plunger water-pump is often used as power supply in high-pressure water-jet propulsion system (HWPS). Generally, the flow pulsation and pressure pulsation generated in the working process of HWPS is absorbed by a passive accumulator. If work condition of HWPS changes, the function of passive accumulator absorbing pressure pulsation will weaken. In order to solve this problem, the mathematical model of passive accumulator was established; then, the ability of passive accumulator absorbing pressure pulsation was theoretically analysed when rotation speed of the water-pump and steady-state pressure of HWPS changed. Thereafter, a semi-active accumulator was advanced on the basis of the analytical theory. In order to get the best effect of absorbing pressure pulsation, the semi-active accumulator employed the messages of HWPS pressure and the water-pump rotation speed to regulate the cross-sectional area of its anterior pipeline, thereby to alter its natural frequency. Results of simulation and experiment revealed that pressure pulsation was absorbed better by semi-active accumulator than by passive accumulator when the rotation speed and steady-state pressure changed.

On the failure pattern of sandstone impacted by high-velocity water jet

2015 ◽  
Vol 76 ◽  
pp. 67-74 ◽  
Author(s):  
Yiyu Lu ◽  
Fei Huang ◽  
Xiaochuan Liu ◽  
Xiang Ao
Keyword(s):  
High Velocity ◽  
Water Jet ◽  
Failure Pattern ◽  
Velocity Water

The Design of Water-Jet Propulsion Systems for Hydrofoil Craft

1965 ◽  
Vol 2 (01) ◽  
pp. 15-25
Author(s):  
Joseph Levy
Keyword(s):  
Water Jet ◽  
Propulsion System ◽  
Specific Design ◽  
Propulsion Systems ◽  
Propulsive Efficiency ◽  
Jet Propulsion ◽  
Performance Curves

This paper contains a brief description of the water-jet propulsion system as applied to hydrofoil craft, and a discussion of the salient hydrodynamic aspects of the problem of fitting the main propulsion system to the specified thrust-versus-speed requirements. The factors that affect the overall propulsive efficiency and the weight of the system are discussed at some length; procedures for optimization of performance at the design cruising speed are outlined; finally, the processes by which the performance at off-design conditions may be evaluated are discussed and illustrated with performance curves for one specific design.

Research on the thrust of a high-pressure water jet propulsion system

2017 ◽  
Vol 13 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Zuti Zhang ◽  
Shuping Cao ◽  
Xiaohui Luo ◽  
Weijie Shi ◽  
Yuquan Zhu
Keyword(s):  
High Pressure ◽  
Water Jet ◽  
Propulsion System ◽  
Jet Propulsion ◽  
Pressure Water ◽  
High Pressure Water Jet

Research on Optimization of Water Jet Propulsion

2013 ◽  
Vol 380-384 ◽  
pp. 205-208
Author(s):  
Chang Tao Wang ◽  
Feng Long Kan ◽  
Lan Guang Zhao ◽  
Wei Wei
Keyword(s):  
Water Jet ◽  
Propulsion System ◽  
Nozzle Diameter ◽  
The Other ◽  
System Model ◽  
Jet Propulsion ◽  
Pump Speed

Based on characteristic of water jet, there are two important factors to product the thrust. One factor is pump speed and the other is the nozzle diameter. So, The significant optimization be required in order to overcome the existing water jet propulsion problem. In this paper, the water jet propulsion system model be studied at first, and then pump and nozzle optimization be discussed. At last, the result shows that the thrust of water jet by controlling the nozzle diameter size and pump speed.

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