Results 21 to 30 of about 11,145,362 (351)

Investigation on the Effect of the Shaft Transition Form on the Inflow Pattern and Hydrodynamic Characteristics of the Pre-Shaft Tubular Pump Device

Frontiers in Energy Research, 2022
The shaft tubular pump device is widely used in low head pumping stations in plain areas. The N-S equation and the SST k-ω turbulence model are adopted.
Can Luo, Kang Du, Weijun Qi, Li Cheng, Xianbei Huang, Jiaxing Lu, Jiaxing Lu   +6 more
doaj   +1 more source

Influence of Inlet Groove on Flow Characteristics in Stall Condition of Full-Tubular Pump

Frontiers in Energy Research, 2022
The full-tubular pump is a new type of pump with a narrow range of stable operation. In order to improve the internal flow characteristics of the full-tubular pump under small flow conditions and improve the safe and stable operating range of the pump ...
Lijian Shi, Lijian Shi, Yuhang Jiang, Yiping Cai, Beishuai Chen, Fangping Tang, Fangping Tang, Tian Xu, Jun Zhu, Yao Chai   +9 more
doaj   +1 more source

Hydraulic Performance of a Francis Turbine with a Variable Draft Tube Guide Vane System to Mitigate Pressure Pulsations

Energies, 2022
The present paper demonstrates a proof-of-concept by introducing a variable guide vane system in the draft tube of a high-head Francis model turbine. The aim is to examine the hydraulic performance of the turbine while mitigating the pressure pulsations ...
J. Joy, M. Raisee, M. Cervantes
semanticscholar   +1 more source

Investigation laboratory of the effect of increase of the height of the side wall on the performance of nonlinear weirs

Water Science, 2023
Nonlinear weirs offer a relatively high discharge capacity under low water loads. Their efficiency, however, is decreased at high water loads due to the submergence of the weir outlet key. In the present study, sloping parapet walls with the heights of 2,
Marzieh Hamidinia, Mohammad Heidarnejad, Mohammad Hossein Pourmohammadi, Alireza Masjedi   +3 more
doaj   +1 more source

The influence of inlet to outlet width ratio on The hydraulic performance of piano key weir (PKW-type A)

Water practice and technology, 2022
A piano key weir (PKW) is a modified version of non-linear weirs and it can be obtained via amending the centerline length of the weir by small a small footprint.
S. Mero, D. A. Haleem, Ali Abduljabbar Yousif   +2 more
semanticscholar   +1 more source

Optimizing Flow Conduit and Test Analysis of Axial Flow Pump Device in Siyang Second Station

Guan'gai paishui xuebao, 2022
【Objective】 The purpose of this paper is to improve the hydraulic performance of the pump device in the reconstructed project of Siyang Second Station and clarify its hydraulic performance.
JI Qingwei, LI Jindong, LYU Yuting, YUAN Yao, YANG Fan   +4 more
doaj   +1 more source

Selection and experimental evaluation of low-cost porous materials for regenerator applications in thermoacoustic engines [PDF]

, 2010
This paper aims at evaluating three selected low-cost porous materials from the point of view of their suitability as regenerator materials in the design of thermoacoustic travelling wave engines.
Abduljalil, Abdulrahman S., Jaworski, Arthur J., Yu, Zhibin   +2 more
core   +1 more source

Simulation and Verification of Hydraulic Performance and Energy Dissipation Mechanism of Perforated Drip Irrigation Emitters

Water, 2021
Drip irrigation has become an application trend of water-saving irrigation technology due to its excellent water-use efficiency. However, the energy dissipation form of the commonly used labyrinth channel is relatively simple, and the corresponding ...
Shaobo Xing, Zhenhua Wang, Jinzhu Zhang, Ningning Liu, Bo Zhou   +4 more
semanticscholar   +1 more source

Thermo-Hydraulic Performance Characteristics and Optimization of Protrusion Rib Roughness in Solar Air Heater

Energies, 2021
To enhance the thermal performance of solar air heaters (SAHs), protrusion ribs on the absorber are considered to be an attractive solution due to their several advantages.
Tabish Alam, C. Meena, N. B. Balam, Ashok Kumar V, Raffaello Cozzolino   +4 more
semanticscholar   +1 more source

Research on Cavitation Performance of Bidirectional Integrated Pump Gate

Energies, 2023
A pump gate is a device that controls the flow of water. It can stop the flood when it comes, drain the ponding gathered in the city, and improve the water circulation of the city.
Huahuang Lai, Haoshu Wang, Zhen Zhou, Rongsheng Zhu, Yun Long   +4 more
doaj   +1 more source