Results 1 to 10 of about 4,058 (217)
Modelling and Experimental Study of Power Losses in Toothed Wheels [PDF]
Sensors, 2023 In recent decades, the request for more efficient performances in the aeronautical sector moved researchers to pay particular attention to all the related mechanisms and systems, especially with respect to the saving of power.
Guglielmo Giannetti +2 more
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Smart Solutions: A New Direct Current Electric Machine Design to Reduce Weight and Enhance Efficiency. [PDF]
Glob ChallThis article introduces a smart solution for the design of a brush DC motor with a winding‐free rotor (DCFR). The proposed model simplifies manufacturing, reduces material costs, and enhances efficiency. Designed for variable speed and solar power applications, the DCFR achieves 91.8% efficiency and a 21% weight reduction compared to conventional ...
Ivliev D +5 more
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A New Windage Loss Model for S-CO2 Turbomachinery Design
Applied Sciences, 2023 A supercritical CO2 (S-CO2) Brayton cycle is a compact and simple power conversion system with competitive efficiency. However, the strong real gas effects of S-CO2 pose challenges to the design of a cycle and its components.
Dokyu Kim +3 more
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A non‐intrusive method for friction and windage losses estimation in induction motors
IET Electric Power ApplicationsIn the in‐service induction motors (IMs), friction and windage losses (FWL) value should be determined non‐intrusively. Hence, in the in‐service IMs, instead of measuring FWL, empirical equations are used to estimate FWL value.
Moslem Geravandi, Hassan Moradi
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Assessing the Meshing for Windage Power Loss Simulations of an Orthogonal Face Gear
MachinesIn the current energy landscape, efficiency is a critical topic. Therefore, even in the case of geared transmissions, it is essential to predict and calculate power losses as accurately as possible from the design phase. There are mainly three categories
Tiberiu-Daniel Pau +3 more
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Windage Loss Characteristics of Aviation Spiral Bevel Gear and Windage Reduction Mechanism of Shroud
Machines, 2022 With the increasing speed of aviation gear, windage loss has been the main component of power loss. Reducing windage is of great significance to improving the transmission efficiency of aviation spiral bevel gear. Firstly, the calculation model of enclosed spiral bevel gear was established, and the basic physical mechanism of windage power loss was ...
Linlin Li +3 more
openaire +2 more sources
Application of an unstructured overset method for predicting the gear windage power losses
Engineering Applications of Computational Fluid Mechanics, 2021 Enhancing the efficiency of gear systems is of significance to reduce fuel consumption and overall weight. Windage power losses become prevailing in high-speed gear systems, such as aero-engine applications.
Y. Dai, L. Xu, X. Zhu, B. Ouyang
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A quasi-analytical prediction method for gear load-independent power losses for shroud approaching
Engineering Science and Technology, an International Journal, 2023 To limit the adverse effect of the fluid pressure field in high-speed gearing systems, especially for the main reducer of helicopters, shrouds usually adopted to enclose and approaches the high-speed gears will play a vital role in the windage and ...
X. Zhu, J.N. Bian, Y. Dai
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Analysis of Standby Losses and Charging Cycles in Flywheel Energy Storage Systems
Energies, 2020 Aerodynamic drag and bearing friction are the main sources of standby losses in the flywheel rotor part of a flywheel energy storage system (FESS).
Mustafa E. Amiryar, Keith R. Pullen
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Energies, 2016 In this paper, a set of correlations for the windage power losses in a 4 kW axial flux permanent magnet synchronous machine (AFPMSM) is presented. In order to have an efficient machine, it is necessary to optimize the total electromagnetic and mechanical
Alireza Rasekh +2 more
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