Results 21 to 30 of about 39,732 (296)
Energies, 2021 This study aimed to determine the optimal rotor spacing of two vertical-axis wind turbines, which are simulated by miniature models arranged side-by-side with a relatively low aspect ratio.
Yoshifumi Jodai, Yutaka Hara
doaj +1 more source
Influence of lateral rotor spacing on the benefits in power generated by multi-rotor configurations
Journal of Physics: Conference Series, 2022 In this work, an analysis of the rotor wakes interaction for different array configurations of onshore wind turbines, has been made using CENER’s in-house aerodynamic module, called AeroVIEW. The study focuses on how the distance between rotors affects the increases in power and thrust obtained by configurations with more than one laterally aligned ...
Raquel Martín-San-Román +3 more
openaire +1 more source
Effect of axial spacing on rotating stall performance of FBCDZ-10-No20 contra-rotating fan
Meitan kexue jishu, 2023 Mining contra-rotating fan are prone to rotational stall when it operates at low flow rates, which seriously affects the operational stability. The unsteady flow in the full flow passage of a FBCDZ-10-No20 contra-rotating fan at five axial spacings was ...
Qingguang CHEN +3 more
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Performance Analysis of Multiple Wave Energy Converters due to Rotor Spacing
한국해양공학회지, 2021 A numerical hydrodynamic performance analysis of the pitch-type multibody wave energy converter (WEC) is carried out based on both linear potential flow theory and computational fluid dynamics (CFD) in the unidirectional wave condition.
Sunny Kumar Poguluri +3 more
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Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System [PDF]
, 2012 An experimental study on the design of counter-rotating axial-flow fans was carried out. The fans were designed using an inverse method. In particular, the system is designed to have a pure axial discharge flow.
Bakir +21 more
core +8 more sources
Optimization of the Guiding Stability of a Horizontal Axis HTS ZFC Radial Levitation Bearing
Actuators, 2021 This document presents a study on the optimization of the 3D geometry of a horizontal axis radial levitation bearing with zero-field cooled (ZFC) high-temperature superconductor (HTS) bulks in the stator, and radially magnetized permanent magnet (PM ...
António J. Arsénio +3 more
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Effects of rotor separation on the axial descent performance of dual-rotor configurations
Flow, 2023 Rotorcraft can encounter highly unsteady flow when descending at a steep angle, leading to a flow condition called vortex ring state, which is associated with strong oscillatory airloads and substantial losses in mean rotor thrust.
Marcel Veismann +2 more
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Aerodynamics Optimization of a Ducted Coaxial Rotor in Forward Flight Using Orthogonal Test Design
Shock and Vibration, 2018 To investigate the aerodynamic complexities involved in the combination of freestream and propeller’s suction flow field of ducted coaxial rotors system in forward flight, an orthogonal L16(43) test design has been applied to optimize the design ...
Yuening Jiang, Hai Li, Hongguang Jia
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Wind tunnel comparison of four VAWT configurations to test load-limiting concept and CFD validation [PDF]
Wind Energy Science, 2021 The article describes results of experimental wind tunnel testing of four different straight-bladed vertical axis wind turbine model configurations. The experiment tested a novel concept of vertically dividing and azimuthally shifting a turbine rotor ...
J. Wiśniewski +3 more
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Energies, 2023 To elucidate the wind-direction dependence of the rotor performance in closely spaced vertical-axis wind turbines, wind-tunnel experiments were performed at a uniform wind velocity.
Yoshifumi Jodai, Yutaka Hara
doaj +1 more source