Results 21 to 30 of about 37,000 (232)

Influence of Axial Installation Deviation on the Hydraulic Axial Force of the 1000 MW Francis Runner in the Rated Operating Condition

open access: yesEnergies, 2023
To study the influence of the axial installation deviation of the runner on the hydraulic axial force of the 1000 MW Francis turbine unit, geometric models of the full flow passage of the Francis turbine with the runner sinking in the axial direction by ...
Yongsheng Liu   +6 more
doaj   +1 more source

Optimized Reduction in Draft Tube Pressure Pulsation for a Francis Turbine [PDF]

open access: yesJournal of Applied Fluid Mechanics
As a core component of hydroelectric power generation, the stable and safe operation of the Francis turbine is very important for the operation of the project. Therefore, attention must be paid to the problem of pressure pulsation in the Francis turbine.
J. Lu, R. Tao
doaj   +1 more source

Research on the Hydraulic Characteristics of 1000 MW Francis Runner: Influence of Radial Installation Deviations

open access: yesApplied Sciences, 2023
This paper focuses on a 1000 MW Francis turbine and conducts a numerical analysis of the entire flow passage using computational fluid dynamics (CFD) under steady-state conditions.
Yifan Wang   +6 more
doaj   +1 more source

A framework for developing engineering design ontologies within the aerospace industry [PDF]

open access: yes, 2014
This paper presents a framework for developing engineering design ontologies within the aerospace industry. The aim of this approach is to strengthen the modularity and reuse of engineering design ontologies to support knowledge management initiatives ...
Sanya, I. O., Shehab, Essam
core   +1 more source

CFD approach to analysis of the flow characteristics of a high-pressure francis turbine [PDF]

open access: yes, 2019
З ростом обчислювальної механіки віртуальні гідравлічні машини стають все більш реалістичними, дають можливість визначити незначні деталі потоку, що в свою чергу неможливо отримати при тестуванні моделей.
Миронов, Вадим Костянтинович   +2 more
core   +1 more source

Experimental Flow Performance Investigation of Francis Turbines from Model to Prototype

open access: yesApplied Sciences
Investigating the flow performance of Francis turbines from model to prototype is a complex but essential process for ensuring reliable and efficient turbine operation in hydropower plants.
Baig Mirza Umar   +2 more
doaj   +1 more source

Innovation of Pump as Turbine According to Calculation Model for Francis Turbine Design

open access: yesEnergies, 2021
The effective utilization of micro hydropower sources is often realized through the use of pumps as turbines (PAT). The efficiency of PAT is about the same as that of the original pump. A further increase in efficiency and power output can be achieved by
Martin Polák
doaj   +1 more source

Flow-Induced Stress Analysis of a Large Francis Turbine Under Different Loads in a Wide Operation Range

open access: yesApplied Sciences
Francis turbines, being widely used in hydropower plants, operate under different loads which significantly affect their hydraulic characteristics and structural dynamics.
Xingxing Huang   +4 more
doaj   +1 more source

Dynamic Simulation of Starting and Emergency Conditions of a Hydraulic Unit Based on a Francis Turbine

open access: yesEnergies, 2022
The Francis hydro-turbine is a typical nonlinear system with coupled hydraulic, mechanical, and electrical subsystems. It is difficult to understand the reasons for its operational failures, since the main cause of failures is due to the complex ...
Andrey Achitaev   +3 more
doaj   +1 more source

Ocean energy:the wave of the future [PDF]

open access: yes, 2008
The power point presentation discussed the developing technology of ocean energy with design convergence on tidal but not on wave. Today's technologies will help solve the immediate needs, but we need to work hard nurturing tomorrow's low carbon ...
Aggidis, George A.
core   +1 more source

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