Results 21 to 30 of about 2,207,326 (232)

Enhancing the Efficiency of the Savonius Hydro Turbine in Pipe Through Design Optimization and Computational Fluid Dynamics Flow Modeling [PDF]

Journal of Applied Fluid Mechanics
This work explores the performance improvement of a Savonius Hydro Turbine (SHT) installed inside a 4-inch pipeline by examining the combined effects of the guide-vane angle and central-shaft opening ratio were assessed through Computational Fluid ...
S. Nuyam, R. Suntivarakorn, K. Thanatwutthikorn, P. Vengsungnle   +3 more
doaj   +1 more source

Numerical Investigation in the Vaned Distributor under Different Guide Vanes Openings of a Pump Turbine in Pump Mode

Journal of Applied Fluid Mechanics, 2016
The performance of a pump turbine in pump mode is of great importance to a pumped storage power plant. In order to obtain the pump characteristics of a pump turbine, 3D steady simulations were carried out by solving rans using different two-equation turbulence models.
D. Y. Li, R. Z. Gong, H. J. Wang, Jian Zhang, X. Z. Wei, L. F. Shu   +5 more
openaire   +2 more sources

Mitigation of the Pressure Pulsations in an Axial Turbine at Speed-No-Load With Independent Guide Vanes Opening

Journal of Fluids Engineering, 2023
Abstract Hydraulic turbines are operated more frequently at no-load conditions, also known as speed-no-load (SNL), to provide a spinning reserve that can rapidly connect to the electrical grid. As intermittent energy sources gain popularity, turbines will be required to provide spinning reserves more frequently.
Kranenbarg, Jelle, Jonsson, Pontus P., Mulu, Berhanu G., Cervantes, Michel Jose   +3 more
openaire   +2 more sources

Impact of a Guide Vane clearance Gap in a Francis turbine flow; a comparison between experimental and computational Data [PDF]

, 2022
The problem of the leakage flow between Guide Vane and the covering plate due to erosion is a strong source of inefficiency. To investigate this issue the TU university of Wien built a model, testing it at several configurations of Gap span and closing ...
Frau, Nicola
core  

A 1D-3D Coupling Model to Evaluate Hydropower Generation System Stability

Energies, 2022
This paper proposes a novel 1D-3D approach for the stability characteristics of the hydropower generation system (HGS) in transition processes. First, a 1D-3D coupling model was established for the HGS in the load-reduction process. Second, a sensitivity
Meng Zhang, Jinhai Feng, Ziwen Zhao, Wei Zhang, Junzhi Zhang, Beibei Xu   +5 more
doaj   +1 more source

Pengaruh Variasi Pembukaan Sudu Pengarah Terhadap Efisiensi Turbin CROSS FLOW = The Effects of Opening Variation of Guide Vane on the Efficiency of Cross Flow Turbine [PDF]

, 2004
This research was intended to study the effects of opening variation of guide vane on output power, efficiency, and the characteristic of a cross flow turbine. A Cross flow turbine was installed at a flow system which had a head of 5.48 m. The guide vane
Yus Witdarko, I Made Suardjaja, Harwin Saptoadi
core   +2 more sources

Multi-Objective Feedback Nonlinear Sliding Mode Control Strategy Based Integrated Regulator for Hydropower Set With Sloping Ceiling Tailrace Tunnel

IEEE Access, 2023
In this paper, a multi-objective feedback nonlinear sliding mode control strategy is designed to reduce the impact of the disturbance on the hydro-generator set in the tailrace tunnel with a sloping ceiling, aiming at ensuring the safe and stable ...
Zhiding Wu, Zhuolin Wu, Fannie Kong, Haochen Zhang   +3 more
doaj   +1 more source

Guide Vane (Gv) Governor Valve Plta Cikalong Unit 3

, 2021
Hydro Power Plant or Pembangkit Listrik Tenaga Air (PLTA) is a power plant that uses renewable energy in the form of water. The Hydropower System converts the energy from flowing water into mechanical energy and then into electrical energy.
et. al., Ase Suryana,
core   +1 more source

The influence of guide vane opening on internal cavitation of Francis turbine

Journal of Physics: Conference Series
Abstract In response to the theme of national multi energy complementary power grid construction, hydropower stations need to frequently change the opening of active guide vanes. Operation deviates from the rated working condition. And output is adjusted to meet the flexible power demand of users.
Minjia Chen, Xingqi Luo, Jianjun Feng, Siqin Lv   +3 more
openaire   +1 more source

Assessment of guide vane self-excitation stability at small openings in pump flow

IOP Conference Series: Earth and Environmental Science, 2012
A parameter study of self-excited pump turbine guide vane instability at small openings using a combined CFD-1DOF approach shows that clear tendencies are difficult to obtain. Two types of boundary conditions can be used in the simulations: prescribed mass flow and prescribed pressure.
B Nennemann, M Sallaberger, U Henggeler, C Gentner, E Parkinson   +4 more
openaire   +1 more source