Results 21 to 30 of about 3,469 (167)

Advances in research on impulse hydro‐turbine technology

River, EarlyView.
Abstract To accelerate the development of impulse hydro‐turbines and support the efficient utilization of hydropower resources in Southwest China, this paper examines the background, historical development, and research progress of impulse hydro‐turbines.
Xiaochao Li, Ye Zhou, Hao Zhang, Guanglei Xiao, Yanwei Li, Zhongxin Gao, Zhiyang Lu, Shangqi Li   +7 more
wiley   +1 more source

Rocketdyne's advanced coal slurry pumping program [PDF]

, 1977
The Rocketdyne Division of Rockwell International Corporation is conducting a program for the engineering, fabrication, and testing of an experimental/prototype high-capacity, high-pressure centrifugal slurry feed pump for coal liquefaction purposes. The
Davis, D. E., Gilman, H. H., Wong, G. S.
core   +1 more source

HWTS 50 Tool Steel Tailored for Laser Powder Bed Fusion: Sliding Wear of Bare Surfaces and Nitriding Response in Comparison with 18Ni300 and AISI H13

steel research international, EarlyView.
This work investigates the wear resistance and nitriding behavior of PBF‐LB/M‐processed Osprey HWTS 50, a lean hot work tool steel. Three heat treatment conditions are compared to conventional wrought H13, H11, and PBF‐LB/M 18Ni300. The study highlights HWTS 50's enhanced nitrogen diffusion, deeper nitriding hardness depth, and comparable or improved ...
Jonathan Hann, Giorgia Lupi, Sylvain Dossin, Riccardo Casati, Mandanà Moshiri, Arne Röttger, Faraz Deirmina   +6 more
wiley   +1 more source

Interaction of particles with a cavitation bubble near a solid wall

, 2018
Hard particle erosion and cavitation damage are two main wear problems that can affect the internal components of hydraulic machinery such as hydraulic turbines or pumps.
Jung, Sunghwan, Laín, Santiago, Rodriguez, Sara A., Teran, Leonel A.   +3 more
core   +1 more source

Fluvial incision and tectonic uplift across the Himalayas of central Nepal [PDF]

, 2001
The pattern of fluvial incision across the Himalayas of central Nepal is estimated from the distribution of Holocene and Pleistocene terraces and from the geometry of modern channels along major rivers draining across the range. The terraces provide good
Avouac, J. P., Lavé, J.
core   +1 more source

EFFECTS OF ABRASIVES DURING ACCELERATED SIMULATION OF MECHANICAL CORROSION OF CEMENT COMPOSITES USING ABRASIVE WATER FLOW [PDF]

, 2023
The paper deals with the use of the abrasive water flow technology in an accelerated simulation of the process of mechanical degradation of surface layers of cement-based composites by flowing liquids.
Bodnárová, Lenka, Hlaváček, Petr, Klichová, Dagmar, Sitek, Libor   +3 more
core   +1 more source

Interaction of internal waves with the seafloor on the Namibian shelf (SE Atlantic Ocean): Implications for seafloor geomorphology

Earth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
Over geological timescales, internal waves play a significant role in shaping the seafloor morphology. They generate nepheloid layers, slope‐parallel channels and escarpments with erosional surfaces. Abstract The long‐term impact of internal waves on sedimentation and seafloor geomorphology remains poorly constrained.
Elda Miramontes, Claudia Wienberg, Tilmann Schwenk, Christian Mohn, Nadezhda Lagunova, Ling Wang, Paul Wintersteller, Jürgen Titschack, Victor Oki, Ulrike Hanz, Furu Mienis, Sabrina Köper, Maren Walter, Dierk Hebbeln   +13 more
wiley   +1 more source

Efficiency Testing of Pelton Turbines with Artificial Defects—Part 1: Buckets

Energies
Pelton turbines are susceptible to hydro-abrasive erosion from sediment-laden flows, resulting in a progressive loss of efficiency. Typical defect classes can be derived from the analysis of such damage observed in hydropower plants.
Florian Fahrni, Thomas Staubli, Ernesto Casartelli   +2 more
doaj   +1 more source

Advancing Severe Plastic Deformation for Tubular Samples: Systematic Review and Machine Learning Optimization

MetalMat, Volume 3, Issue 1, March 2026.
This review highlights recent advancements in Severe Plastic Deformation (SPD) techniques tailored for tubular samples. The mechanisms of processing are critically discussed with emphasis on microstructural control and the governing process parameters that enable refinement to ultrafine‐ and nano‐grained structures. Comparative insights into equivalent
Eman M. Zayed, Abdulrahman I. Alateyah, Waleed H. El‐Garaihy, Mahmoud Shaban, Majed Alinizzi, Nahed A. El‐Mahallawy   +5 more
wiley   +1 more source

Efficiency Testing of Pelton Turbines with Artificial Defects—Part 2: Needles and Seat Rings

Energies
The erosion of Pelton turbine components in mountainous areas with high sediment input is a major challenge for energy- and cost-efficient operation. Quantitative data on possible efficiency losses associated with local damage are needed.
Florian Fahrni, Thomas Staubli, Ernesto Casartelli   +2 more
doaj   +1 more source