Results 121 to 130 of about 682,069 (145)

Large eddy simulation of turbulent flow structure and characteristics in an annular jet pump

Journal of Hydrodynamics, 2017
The large eddy simulation(LES) of the flow characteristics in an annular jet pump (AJP) is conducted, and the flow characteristics are systematically analyzed from both time-averaged and instantaneous aspects. The jet expansion, the velocity distribution and the energy are considered to analyze the time-averaged evolution of the flow field in the AJP ...
Xin-Ping Long
exaly   +2 more sources

Annular Jet Pump

Review of Scientific Instruments, 1959
Werner H. Haak, Frederick Vrátný
exaly   +2 more sources

Suction performance improvement of an annular jet pump by J-groove passage shape optimization

Journal of Mechanical Science and Technology, 2021
Young-Do Choi, Ujjwal Shrestha
exaly   +2 more sources

Research on liquid-solid numerical simulation of annular jet pump

International Conference on Mechatronics and Intelligent Control (ICMIC 2024)
Shancheng Li, Yongyu Wang, Guangghi Zeng, Jiabo Qui, Yangfan Men   +4 more
exaly   +2 more sources

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

Numerical Study of Flow Inside an Annular Jet Pump

Journal of Thermophysics and Heat Transfer, 2006
Nomenclature AJ = sectional area of annular jet Ao, Do = area, inner diameter of suction and delivery lines Aso, Dso = area, exit diameter of central suction nozzle At , Dt = area, inner diameter of mixing chamber Cp = pressure coefficient = [(Px − Ps)]/[0.5ρV 2 J ] Lt = length of mixing chamber L ′ = total length of the convergent nozzle and the ...
M. El Gazzar, Tarek Meakhail, Samy Mikhail   +2 more
openaire   +1 more source

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

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