Results 81 to 90 of about 53,698 (266)

A quasi-three-dimensional method for calculating blade surface velocities for an axial flow turbine blade [PDF]

Quasi-three-dimensional compressible flow analysis for calculating blade surface velocities for axial flow turbine ...
Dellner, L. T., Katsanis, T.
core   +1 more source

Variably positioned guide vanes for aerodynamic choking [PDF]

, 1974
A choking device to cause a sonic barrier to be formed which reduces the transmission of noise in a direction opposed to the direction of air flow in a compressor that may be part of an aircraft gas turbine engine is described.
Chestnutt, D.
core   +1 more source

Effect of steam addition on the flow field and NOx emissions for Jet-A in an aircraft combustor [PDF]

, 2016
The steam injection technology for aircraft engines is gaining rising importance because of the strong limitations imposed by the legislation for NOx reduction in airports.
Hu, Chunbo, Nikolaidis, Theoklis, Pilidis, Pericles, Xue, Rui   +3 more
core   +1 more source

Two‐Layer Optimal Control Strategy of Thermal Power Unit Coupled With Hybrid Energy Storage System in Frequency Regulation

Energy Science &Engineering, EarlyView.
An optimized two‐layer TPU‐HESS operation strategy enables adaptive power allocation, mitigates regulation delay, and enhances AGC performance by 6.4% over conventional control methods. ABSTRACT With the growing penetration of renewable energy, its intermittency and fluctuation have imposed increasingly stringent regulation requirements on thermal ...
Zhiwei Xing, Lu Liang, Yunfeng Tian, Lei Liu, Chuan Zuo, Longfei Zhu, Zhan Li, Zhenyong Yang, Jingqiu Kang, Feng Hong   +9 more
wiley   +1 more source

Final results from the EU project AVATAR: aerodynamic modelling of 10 MW wind turbines [PDF]

, 2018
This paper presents final results from the EU project AVATAR in which aerodynamic models are improved and validated for wind turbines on a scale of 10 MW and more.
Barakos, G., Boorsma, K., Croce, A., Ferreira, C., Gonzalez, A., Heisselmann, H., Jost, E., Lampropoulos, N., Lutz, T., Madsen, J., Maeder, T., Rahimi, H., Schepers, J.G., Sieros, G, Stoevesandt, B., Sørensen, N., Voutsinas,   +16 more
core   +2 more sources

Modeling and Experimental Study of a Dual‐Receiver Parabolic Solar Concentrator for Direct Electricity Generation and Thermal Storage for Isolated Sites

Energy Science &Engineering, EarlyView.
Approximately 64% of the population in sub‐Saharan Africa lacks access to electricity, despite the region's high solar potential, making concentrated solar power a promising solution for decentralized and sustainable energy supply. This study presents the design, construction, and testing of a parabolic solar concentrator with two focal‐point receivers
Sani Dan Nomao Harouna, Nabil Alkassoum, Noma Talibi Soumaila, Ali Aboubacar, Hamza Abarchi Halarou, Boubou Bagre, Makinta Boukar   +6 more
wiley   +1 more source

Preliminary Design Method and Performance Analysis of Small-Scale Single-Stage Axial Turbine for Supercritical CO₂ Applications

Energies
The supercritical carbon dioxide (sCO2) Brayton cycle has advantages such as a compact system and high energy density. Axial turbines, the key component of the cycle, have lower rotational speeds, pressure ratios and engineering difficulties compared to ...
Yumeng Han, Yongqing Xiao, Bingkun Ma, Yueming Yang, Ziang Kong, Xinying Liu, Jianhui Qi   +6 more
doaj   +1 more source

Robust Control Using a Matrix Converter to Enhance Wind Turbine Systems

Energy Science &Engineering, EarlyView.
This study uses a more efficient and effective solution to improve the operational performance of a wind turbine‐based power system. This system uses a doubly fed induction generator and relies on a matrix converter and fractional‐order proportional–integral controller.
Sihem Ghoudelbourk, Habib Benbouhenni, Adil Yahdou, Zakaria Mohamed Salem Elbarary, Nicu Bizon   +4 more
wiley   +1 more source

Axial Turbine Cascade Correlation

Applied Sciences, 2016
The performance simulation of an axial turbine is achieved in a simple way from the calculation of velocity diagrams. For this purpose, a reliable loss model is needed for the flow through each stationary or rotating axial blade cascade.
Guilherme Leibsohn Martins
doaj   +1 more source

Cold-air performance of a 15.41-cm-tip-diameter axial-flow power turbine with variable-area stator designed for a 75-kW automotive gas turbine engine [PDF]

An experimental evaluation of the aerodynamic performance of the axial flow, variable area stator power turbine stage for the Department of Energy upgraded automotive gas turbine engine was conducted in cold air.
Kofskey, M. G., Mclallin, K. L., Wong, R. Y.   +2 more
core   +1 more source