Results 241 to 250 of about 13,535 (261)

Shear Cavitation in an Annular Jet Pump Under Recirculation Conditions

Journal of Fluids Engineering, 2016
Recirculation accompanied by shear cavitation is a key flow feature in annular jet pumps (AJPs). In this study, a high-speed camera was used to capture the recirculation region and various types of cavity clouds. By monitoring the trajectories of the small bubbles, the main recirculation regions under each flow rate ratio were obtained.
Longzhou Xiao, Xinping Long, Junqiang Zhang   +2 more
openaire   +1 more source

Studies of the Configuration and Performance of Annular Type Jet Pumps

Journal of Fluids Engineering, 1987
In this paper, we investigated experimentally the relation between configuration and performance of the annular type jet pump and compared it with that of the central jet type. Twenty-five different kinds of pumps were used in the experiments. These pumps reached a maximum efficiency of thirty-six percent. This corresponds with that of the conventional
Yukimaru Shimizu, Shogo Nakamura, Sadao Kuzuhara, Shigemitsu Kurata   +3 more
openaire   +1 more source

Implementation of design of experiment for structural optimization of annular jet pumps

Journal of Mechanical Science and Technology, 2016
The DOE (Design of experiments) method together with CFD (Computational fluid dynamics) was applied to optimize structural combination of the Annular jet pumps (AJPs). An AJP with an area ratio of 1.75 was selected as the simulation prototype and the numerical results were validated by experiments.
Qiao Lyu, Zhihuai Xiao, Qinlong Zeng, Longzhou Xiao, Xinping Long   +4 more
openaire   +1 more source

Numerical investigation of turbulent flow coherent structures in annular jet pumps using the LES method

Science China Technological Sciences, 2017
Annular jet pumps that are used in hydraulic machinery have a very simple structure but very complex internal flow fields. Large eddy simulations were used to study the coherent structures in the turbulent flows in annular jet pumps with various area ratios, m.
MaoSen Xu, XueLong Yang, XinPing Long, Qiao Lyu, Bin Ji   +4 more
openaire   +1 more source

Multi-objective performance optimization of a solid–liquid two-phase annular jet pump

Physics of Fluids
To enhance the performance of a solid–liquid two-phase annular jet pump, efficiency and energy consumption are selected as objective functions. Using the design of experiments method, area ratio, annular nozzle length, and diffuser angle are identified as variables.
Minggao Tan, Chen Shao, Houlin Liu, Xianfang Wu, Runan Hua, Yang Zhao   +5 more
openaire   +1 more source

A Reynolds-averaged Navier-Stokes computational analysis of a novel multi-nozzle annular air-jet pump

2021
This thesis presents a thorough investigation of the flow field of single-phase swirl inducing multi-nozzle annular jet pumps, in which a system of discrete jets flows into the pump bore through nozzles fed by compressed air accumulated in an annular plenum chamber.
openaire   +1 more source

Annular Jet Pump

Review of Scientific Instruments, 1959
Werner H. Haak, Frederick Vrátný
openaire   +1 more source

Cavitation Performance Improvement of an Annular Jet Pump by J-Groove

The KSFM Journal of Fluid Machinery, 2020
Young-Do Choi, Ujjwal Shrestha
openaire   +1 more source

On the Annular Ring Type Jet Pump

Journal of the Mining Institute of Japan, 1974
Akira YOKOTA, Noriyuki YAMADA, Osamu ISHIBASHI   +2 more
openaire   +1 more source

A Numerical Study of the Flow Inside Annular Jet Pumps

37th AIAA Thermophysics Conference, 2004
Mohamed El Gazzar, Tarek Meakhail, Samy Mekhail   +2 more
openaire   +1 more source