Results 141 to 150 of about 3,469 (167)
Some of the next articles are maybe not open access.
Hydro-abrasive erosion in hydro turbines: a review
International Journal of Green Energy, 2018The flow of sediment particles in rivers is a big challenge to develop hydropower plants across the sediment-laden rivers.
Saurabh Sangal +2 more
openaire +1 more source
Fracture range detection in hydro-abrasive erosion of concrete
Wear, 2002The paper discusses fast Fourier transform (FFT) parameters of acoustic emission signals acquired during the hydro-abrasive erosion (HAE) of five different concrete mixtures. The FFT-peak amplitude as well as the FFT-peak frequency shows some pronounced relationships to the depth of penetration and to the fracture behavior of the investigated materials.
A.W Momber, R.S Mohan, R Kovacevic
openaire +1 more source
Hydro-abrasive erosion of steel-fibre reinforced hydraulic concrete
Wear, 2002In this paper, hydro-abrasive erosion tests on plain concrete (PC) and on steel-fibre reinforced concrete (FRC) are performed, and the erosion behaviour of the materials for different erosion conditions is investigated. Effects of suspension velocity, impact angle and solid content have been studied in detail.
X.G. Hu, A.W. Momber, Y.G. Yin
openaire +1 more source
Hydro-abrasive erosion in Pelton buckets: Classification and field study
Wear, 2017Abstract In fragile mountainous regions, hydropower plant components face severe hydro-abrasive erosion, resulting in reduced efficiency, frequent interruptions in power generation and downtime during maintenance. In this study, the hydro-abrasive erosion is classified and measurement methodology is proposed for various erosion patterns in Pelton ...
Anant Kr. Rai +2 more
openaire +1 more source
Analytical modelling and mechanism of hydro-abrasive erosion in pelton buckets
Wear, 2019Abstract Hydro-abrasive erosion, a severe issue in hydraulic turbines, is caused by sediment laden flow leading to shutdowns and losses. In this study, a simplified analytical model is developed which describes the relationship of hydro-abrasive erosion in Pelton buckets with sediment properties, erosion velocity, turbine material property and ...
Anant Kumar Rai +2 more
openaire +1 more source
Effect of concentration and size of sediments on hydro-abrasive erosion of Pelton turbine
Renewable Energy, 2020Abstract Hydro-abrasive erosion caused by suspended sediments is a severe issue leading to frequent generation losses and failure of hydropower components especially in geologically young mountains like the Himalayas. To study the erosion behaviour of different materials under the same erosive and hydraulic conditions, experiments were performed ...
Anant Kumar Rai +2 more
openaire +1 more source
Analyzing hydro abrasive erosion in Kaplan turbine: A case study from India
Journal of Hydrodynamics, 2016Sediment flow through hydro turbine causes erosion of hydraulic components resulting in drop of turbine efficiency, particularly in hydropower plants of the Himalayan region. The measurement of erosion and monitoring of sediment flow in turbine are major concerns in erosion study.
Anant Kr. Rai, Arun Kumar
openaire +1 more source
Hydro-abrasive erosion of high performance fiber-reinforced concrete
Wear, 2009Abstract High strength concretes are often used for increasing the erosion resistance of the hydraulic structures. Searching for possibilities of improving the resistance of the cement matrix to the aggressive environment action, like erosion or cavitation, is very often connected to introduction of various fibers into the matrix.
openaire +1 more source
Journal of Materials Engineering and Performance, 2020
The erosive wear of a hydraulic turbine due to suspended solid particles reduces its performance and service life. Martensitic stainless steel CA6NM, used for turbine parts of a hydropower plant, gets eroded heavily every year, particularly in the monsoon period.
Shubham Sharma, Bhupendra K. Gandhi
openaire +1 more source
The erosive wear of a hydraulic turbine due to suspended solid particles reduces its performance and service life. Martensitic stainless steel CA6NM, used for turbine parts of a hydropower plant, gets eroded heavily every year, particularly in the monsoon period.
Shubham Sharma, Bhupendra K. Gandhi
openaire +1 more source
On-line analysis of hydro-abrasive erosion of pre-cracked materials by acoustic emission
Theoretical and Applied Fracture Mechanics, 1999Acoustic Emission (AE) sensing technique is used as a tool for on-line monitoring of hydro-abrasive erosion (HAE) of pre-cracked multiphase materials. As reference materials, five types of concrete materials were used for the experimental study. Compression tests were performed to determine the mechanical properties and the failure behavior of these ...
A.W Momber, R.S Mohan, R Kovacevic
openaire +1 more source