Investigation on cavitation initiation in jet pump cavitation reactors with special emphasis on two mechanisms of cavitation initiation

2022 ◽  
Vol 34 (1) ◽  
pp. 013308
Author(s):  
Shuangjie Xu ◽  
Jiong Wang ◽  
Biaohua Cai ◽  
Huaiyu Cheng ◽  
Bin Ji ◽  
...  
Keyword(s):  
Jet Pump

JET PUMP FOR RISE EFFICIENT OPENING OF THE PRODUCTIVE PLAST

2018 ◽  
pp. 18-24
Author(s):  
V.V. Shaidakov ◽  
◽  
A.P. Melnikov ◽  
K.V. Chernova ◽  
G.E. Korobkov ◽  
...  
Keyword(s):  
Jet Pump

Design of Vacuum System of Steam Jet Bursting Unit for Chestnut Shell

2011 ◽  
Vol 291-294 ◽  
pp. 1685-1688
Author(s):  
Xi Nan Dang ◽  
Qiao Fu Chen ◽  
Li Jun Yang
Keyword(s):  
Energy Consumption ◽  
Vacuum System ◽  
Jet Pump ◽  
Waste Gas ◽  
System A ◽  
Start Up ◽  
Chestnut Shell ◽  
Bursting Process

According to the vacuum bursting process for fresh chestnut shell and requirements for relevant vacuum system, a vacuum system of steam jet pump was designed with a start-up jet pump attached to it. Of which the waste gas from ejector was used for reheating in the bursting process to lead the vacuum bursting unit to run more reliably and stably with efficiency improved and energy consumption reduced. The rate of bursting came up to 95% in the process test.

CFD Calculation of the Flow Through a Water-Jet Pump

2001 ◽  
Author(s):  
Peixin Hu ◽  
◽  
M Zangeneh ◽  
Keyword(s):  
Water Jet ◽  
Jet Pump ◽  
Flow Through

scholarly journals Development of Hybrid Airlift-Jet Pump with Its Performance Analysis

2018 ◽  
Vol 8 (9) ◽  
pp. 1413 ◽  
Author(s):  
Dan Yao ◽  
Kwongi Lee ◽  
Minho Ha ◽  
Cheolung Cheong ◽  
Inhiug Lee
Keyword(s):  
Boundary Conditions ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Stokes Equations ◽  
Flow Characteristics ◽  
Operating Conditions ◽  
Navier Stokes ◽  
Jet Pump ◽  
Two Phase

A new pump, called the hybrid airlift-jet pump, is developed by reinforcing the advantages and minimizing the demerits of airlift and jet pumps. First, a basic design of the hybrid airlift-jet pump is schematically presented. Subsequently, its performance characteristics are numerically investigated by varying the operating conditions of the airlift and jet parts in the hybrid pump. The compressible unsteady Reynolds-averaged Navier-Stokes equations, combined with the homogeneous mixture model for multiphase flow, are used as the governing equations for the two-phase flow in the hybrid pump. The pressure-based methods combined with the Pressure-Implicit with Splitting of Operators (PISO) algorithm are used as the computational fluid dynamics techniques. The validity of the present numerical methods is confirmed by comparing the predicted mass flow rate with the measured ones. In total, 18 simulation cases that are designed to represent the various operating conditions of the hybrid pump are investigated: eight of these cases belong to the operating conditions of only the jet part with different air and water inlet boundary conditions, and the remaining ten cases belong to the operating conditions of both the airlift and jet parts with different air and water inlet boundary conditions. The mass flow rate and the efficiency are compared for each case. For further investigation into the detailed flow characteristics, the pressure and velocity distributions of the mixture in a primary pipe are compared. Furthermore, a periodic fluctuation of the water flow in the mass flow rate is found and analyzed. Our results show that the performance of the jet or airlift pump can be enhanced by combining the operating principles of two pumps into the hybrid airlift-jet pump, newly proposed in the present study.

Sign in / Sign up

Export Citation Format

Share Document