Results 61 to 70 of about 5,160 (221)

Influence of 3D Guide Vanes on the Channel Vortices in the Runner of a Francis Turbine

Journal of Fluid Science and Technology, 2006
It is known that the pressure fluctuation in the runner will become large when a Francis turbine operates at the low flow rate and high head. One of the reasons is the occurrence of channel vortices, which are caused by the three-dimensional flow ...
Shuhong LIU, Liang ZHANG, Yulin WU, Xianwu LUO, Michihiro NISHI   +4 more
doaj   +1 more source

A Review on Cracking in Laser Additive Manufacturing of Nickel‐Based Superalloys: Types, Formation Mechanisms, and Suppression Strategies

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin, Ciying Li, Hongkai Zhou, Rui Chen, Yi Li, Can Cui, Lizhang Zhang, Maoyuan Li, Zhenzhong Wang, Wei‐Wei Xu   +9 more
wiley   +1 more source

Estimating golden eagle carrying capacity and wind power impacts through species distribution modeling

Ecosphere, Volume 17, Issue 3, March 2026.
Abstract Knowledge of species' habitat requirements, and the environmental conditions and resources needed for survival and reproduction are key factors in effective conservation management. We used species distribution modeling to study golden eagle (Aquila chrysaetos) habitat requirements.
Pinja Saarinen, Vesa Nivala, Suvi Ponnikas, Anssi Lensu, Hannu Tikkanen   +4 more
wiley   +1 more source

Assessing biomass-fired gas turbine power plants: a techno-economic and environmental perspective [PDF]

, 2013
Fossil fuels continue to deplete with use as they are irreplaceable. In addition, the environmental impact with the continuous use of these conventional fuels has generated global concern due to the production of harmful emission gases. An alternative
Ihiabe, Daniel
core  

Summertime methane and carbon dioxide emission rates and associated variables from a national‐scale survey of 146 reservoirs in the United States

Limnology and Oceanography Letters, Volume 11, Issue 2, March 2026.
Abstract Reservoirs are globally important sources of greenhouse gases, but the magnitude of their emissions is highly uncertain. Here, we present data for 146 reservoirs from two surveys of reservoir methane and carbon dioxide emissions, one at the regional scale in the midwestern United States and one at the national scale in the United States, plus ...
J. J. Beaulieu, B. R. Deemer, R. M. Pilla, K. J. Forshay, J. W. Hollister, S. A. Jacobs, J. T. Walker, P. T. Leinenbach, N. A. Griffiths, S. D. Shivers, A. O. Tatters, K. N. Buckler, J. W. Corra, R. W. Daly, A. N. Djurkovic, S. R. Fulgham, P. L. Goodwin, L. G. Herger, M. W. Jones, N. J. Jones, L. A. Juilfs, C. M. Langstroth, M. E. Mitchell, J. R. Oliveira, B. M. Richmond, J. W. Schroeder   +25 more
wiley   +1 more source

Development of a framework for thermoeconomic optimization of simple and combined gas-turbine cycles [PDF]

, 2012
The problem consists of selecting simple and combined gas-turbine cycles with high thermal e±ciency and low capital cost is the subject of this study.
Aref, Pooneh
core  

A Comprehensive Characteristic Modeling Method for Francis Turbine Based on Image Digitization and RBF Neural Network

Energies
Establishing a mathematical model of a Francis turbine is the foundation for the simulation of hydropower station operation and is of great significance for the analysis of the hydropower station’s transient process.
Youhan Deng, Youping Li, Xiaojun Hua, Rui Lyu, Yushu Li, Lei Wang, Weiwei Yao, Yifeng Gu, Fangqing Zhang, Jiang Guo   +9 more
doaj   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, Volume 36, Issue 13, 12 February 2026.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

Wide range Francis turbine

, 2011
his diploma thesis deals with hydraulic design of vane wheel impeller of wide range Francis turbine; in addition to hydraulic calculation it consists overview of used theory, modelling in SolidWorks and computing in ...
Pavlík, Jan
core   +1 more source

Advanced Ceramics in Aerospace and Defense: The Interrelationship between Traditional and Additive Manufacturing Approaches

Advanced Materials Technologies, Volume 11, Issue 3, 5 February 2026.
Additive manufacturing revolutionizes production by enabling on‐demand, customized, and sustainable manufacturing with streamlined supply chains. While metal and polymer AM are well‐established, advanced ceramic AM is rapidly emerging, overcoming traditional material challenges.
Kateryna Oleksandrivna Shvydyuk, Senentxu Lanceros‐Mendez, Abílio Pereira Silva   +2 more
wiley   +1 more source