Parameterization Design and Virtual Assembly of a Jet Pump

2011 ◽  
Vol 215 ◽  
pp. 163-166
Author(s):  
Chao Wang ◽  
J. Zhang ◽  
J.J. Liu
Keyword(s):  
Working Conditions ◽  
Virtual Assembly ◽  
Area Ratio ◽  
Upper Body ◽  
Jet Pump ◽  
Nozzle Throat ◽  
Design Efficiency ◽  
And Diffusion ◽  
Diffusion Tube ◽  
Parameterization Design

The jet pump is widely applied to industry fields. The nozzle, throat tube, and diffusion tube of the jet pump is variable to meet different working conditions. Parameterization design of a jet pump can be used to design the throat tube and diffusion tube via a given nozzle diameter and sectional area ratio. The virtual assembly of the jet pump, which consists of upper body, pump core, under body, and pump shell, is used to verify the fitting allowance of parts. The result provides an anticipated inspection for manufacture and improves the design efficiency.

Experimental Investigation of a Miniature Ejector Using Water as Working Fluid

2020 ◽  
Vol 12 (6) ◽  
Author(s):  
Jingming Dong ◽  
Qiuyu Hu ◽  
Yuxin Xia ◽  
He Song ◽  
Hongbin Ma ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
High Temperature ◽  
Working Conditions ◽  
Thermal Energy ◽  
Nozzle Exit ◽  
Cooling System ◽  
Area Ratio ◽  
Coefficient Of Performance ◽  
Working Fluid ◽  
Condensing Pressure

Abstract This paper presents an experimental investigation of a miniature ejector using water as the working fluid. The investigated ejector cooling system can utilize the thermal energy to be removed to power the cooling system and maintain the temperature of an electronic component below ambient temperature. The effects of working conditions, nozzle exit position (NXP), and area ratio on the coefficient of performance (COP) of ejector performance were investigated. Experimental results show that the miniature ejector can function well when the temperature in the high-temperature evaporator (HTE) ranges from 55 °C to 70 °C and can achieve a COP (coefficient of performance) of 0.66. With an increase of the NXP, the COP decreases, while the critical condensing pressure first increases and then decreases. As the area ratio of the miniature ejector increases, the COP increases, and the critical condensing pressure decreases.

Recirculation in an Annular-Type Jet Pump

1994 ◽  
Vol 116 (4) ◽  
pp. 735-740 ◽  
Author(s):  
Donald F. Elger ◽  
Sam. J. Taylor ◽  
Chyr P. Liou
Keyword(s):  
Recirculation Zone ◽  
Area Ratio ◽  
Secondary Flows ◽  
Jet Pump ◽  
Flow Area ◽  
Pump Design ◽  
A Value

For some annular-type jet pump applications, it is important to avoid formation of a recirculation zone in the mixing region. The goals of this research were to find (i) when recirculation occurs and (ii) the size and location of the resulting recirculation zone. Experiments were performed using air in a straight-walled, annular-type, ducted jet. Area ratio Aj/As varied from 0.39 to 0.89; here, A is flow area, and j and s identify the jet and secondary flows, respectively. Data showed that recirculation correlates with J, where J ≈ Pj/(Pj + Ps), and P is rate of momentum. For the area ratios studied, recirculation begins when J exceeds a value ranging from 0.89 to 0.94. This paper also presents data showing the recirculation zone boundaries and presents a discussion of jet pump design.

Theoretical Modeling of Central Air-Jet Pump Performance for Pneumatic Transportation of Bulk Solids

1999 ◽  
Vol 121 (2) ◽  
pp. 365-372 ◽  
Author(s):  
D. Wang ◽  
P. W. Wypych
Keyword(s):  
Analytical Procedure ◽  
Area Ratio ◽  
Jet Pump ◽  
Pump Performance ◽  
Bulk Solids ◽  
Air Jet ◽  
Performance Predictions ◽  
Jet Pumps ◽  
Pneumatic Transportation ◽  
Good Agreement

A mathematical model to predict the air-solids performance of central air-jet pumps has been developed based on the fundamentals of fluid and particle mechanics. The influence of throat entry configuration on performance has been incorporated into the analytical model by introducing a throat entry function and suction area ratio. Nondimensional parameters to represent air-solids jet pump performance has been defined and used in the analytical procedure. The performance predictions obtained by this model show good agreement with experimental results.

Experimental and numerical studies of the effect of area ratio and driving pressure on the performance of water and slurry jet pumps

2011 ◽  
Vol 226 (9) ◽  
pp. 2250-2266 ◽  
Author(s):  
Tarek Meakhail ◽  
Ibrahim Teaima
Keyword(s):  
Area Ratio ◽  
Driving Pressure ◽  
Operating Conditions ◽  
Jet Pump ◽  
Numerical Studies ◽  
Pumping Stations ◽  
Mixing Chamber ◽  
Jet Pumps ◽  
Different Diameters ◽  
Experimental Rig

The slurry jet pump with scouring nozzle system can be used in dredging of sites, which are difficult to access or need handling of equipments that are used for the intake of pumping stations under bridges and concrete water channels. This system is suitable for sand, silt, sludge, mud, and other organic materials. The aim of this study is to investigate the performance of water and slurry jet pumps. The effects of the pump-operating conditions and geometries on its performance were investigated. The experimental rig was constructed in such a way that the driving nozzle diameter can be changed. In this study, three different diameters of driving nozzles, 10, 12.7, and 16 mm, have been used with one mixing chamber of 25.4 mm diameter (i.e. three different area ratios of R = 0.155, 0.25, and 0.4). Also, the effect of driving pressure has been investigated. The results show that increasing the area ratio decreases the maximum mass flow ratio. The results of computational fluid dynamics were found to agree well with actual values obtained from the experimental water and slurry jet pump.

scholarly journals Parameter Analysis and Optimization of Annular Jet Pump Based on Kriging Model

2020 ◽  
Vol 10 (21) ◽  
pp. 7860
Author(s):  
Kai Xu ◽  
Gang Wang ◽  
Liquan Wang ◽  
Feihong Yun ◽  
Wenhao Sun ◽  
...  
Keyword(s):  
Global Optimization ◽  
Kriging Model ◽  
Optimization Method ◽  
Area Ratio ◽  
Pump Efficiency ◽  
Jet Pump ◽  
Pump Design ◽  
Annular Jet ◽  
Design Variables ◽  
Annular Jet Pump

Jet pump efficiency heavily relies on the geometrical parameters of the pump design and parameter global optimization in the full variable space is still a big challenge. This paper proposed a global optimization method for annular jet pump design combining computational fluid dynamics (CFD) simulation, the Kriging approximate model and experimental data. The suction angle, the flow ratio, the diffusion angle, and the area ratio are selected as the design variables for optimization. The optimal space filling design (OSF) method is used to generate sampling points from the design space of the four design variables. The optimization method solves the constrained optimization problem with a given head ratio by building the functional relationship established by the Kriging model between efficiency and design parameters, which makes the method more applicable. The design result shows that the annular jet pump efficiency is predicted well by the Kriging model; m is a key variable affecting the annular jet pump efficiency. As the area ratio m decreases, the mixing effect at the suction chamber outlet can be improved, but the frictional resistance increases.

3D Modeling and Motion Simulation of Single Surface Corrugated Machine Based on SolidWorks

2012 ◽  
Vol 605-607 ◽  
pp. 651-655
Author(s):  
Ming Xia Yan
Keyword(s):  
3D Modeling ◽  
3D Model ◽  
Virtual Assembly ◽  
Motion Simulation ◽  
Development Cost ◽  
Virtual Design ◽  
Design Efficiency ◽  
Improve Design

With SolidWorks software, 3D model of a single surface corrugated machine was developed, and virtual assembly and motion simulation got realized. During virtual design, faults of the single surface corrugated machine can be found out prior to be made, which is helpful to optimize it. And further, it can improve design efficiency greatly and save development cost.

Simulation Analysis of Hydraulic Jet Pump

2011 ◽  
Vol 204-210 ◽  
pp. 293-296
Author(s):  
Hong Jun Zhu ◽  
Bo Shi Qiu ◽  
Qing Kun Jia ◽  
Xiao Lu Yang
Keyword(s):  
High Speed ◽  
Simulation Analysis ◽  
Structural Parameters ◽  
Work Force ◽  
Simulation Method ◽  
Area Ratio ◽  
Mixing Efficiency ◽  
Engineering Practice ◽  
Jet Pump ◽  
Spray Distance

Hydraulic jet pump is one of the mixing-reaction equipments using high-speed jet for work force to deliver energy and mass of fluid. Many factors affect the efficiency of this pump, and the mechanism is very complex. The present work aims to study the influence of different hydraulic structures on the efficiency. Based on computational fluid dynamics, two-dimensional oil flow in hydraulic jet pump with different structural parameters (area ratio, throat length and spray distance) was simulated. Calculation results show that: area ratio determines the suction capacity, throat length determines the mixing efficiency, and spray distance determines the outlet pressure. Since numerical simulation method can reduce experimental expenses and design cycle, our approach may provide some references for safe design and engineering practice of hydraulic jet pump.

Experimental Study on the Efficiency of Multiple Nozzle Oil Jet Pump for Lubrication System of Steam Turbine

2014 ◽  
Author(s):  
Jun Zhang ◽  
Shunsen Wang ◽  
Jingru Mao ◽  
Xin Yu ◽  
Cong Zhang ◽  
...  
Keyword(s):  
Steam Turbine ◽  
High Efficiency ◽  
Similarity Theory ◽  
Pressure Ratio ◽  
Area Ratio ◽  
Lubrication System ◽  
Jet Pump ◽  
Light Oil ◽  
Oil Jet ◽  
Ratio Range

The efficiency of the multiple nozzle oil jet pump was systematically investigated using the Mobile DTE Light Oil based on the similarity theory in experiment. The experimental condition is the same as that for the multiple nozzle oil jet pump in lubrication system of steam turbine in the power plant. Thus, the influence of the area ratio and the pressure ratio on the efficiency and the pressure ratio interval of variable conditions with stable efficiency was studied in the area ratio range of 4∼9. Results show that there is a fixed relationship between the area ratio and the pressure ratio, which leads to the high efficiency of multiple nozzle oil jet pump. However, the high efficiency value and the pressure ratio interval of variable conditions with stable efficiency show different tendencies with the changing area ratio of multiple nozzle oil jet pump. In the area ratio range of 4∼9, the pressure ratio with the high efficiency value increases by 0.03 with the decrement of 1 for the area ratio. When the area ratio is larger than 6.3, the high efficiency value increases by 1% absolutely with the area ratio decreasing by 1, but remains almost unchanged for the area ratio less than 6.3. Furthermore, the increasing area ratio widens the pressure ratio interval of variable conditions with stable efficiency. The increase of the area ratio by 1 leads to the increment of 9.7% relatively for the pressure ratio interval of variable conditions with stable efficiency. This study provides the quantitative criteria for the determination of the area ratio and the pressure ratio of multiple nozzle oil jet pump, which keeps the high and stable efficiency simultaneously. Apparently, this study has significant engineering contribution.

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