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Influence of engine heat source conditions on a small-scale CO<sub>2</sub> power generation system. [PDF]
Fundam ResLi L +8 more
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Windage Loss Models for Enclosed Cylindrical Flows Under S-CO2 Condition
Journal of Engineering for Gas Turbines and Power, 2023Abstract A supercritical CO2 (S-CO2) Brayton cycle is expected to have high compactness, simple configuration, and competitive efficiency. These advantages originated from CO2 nonideal gas properties near the critical point. However, the strong real gas effect makes the design challenging.
Dokyu Kim +3 more
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Model improvement for shaft-type windage loss with CO2
The Journal of Supercritical Fluids, 2022Lehao Hu +3 more
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Calculating Windage Losses: A Review
Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, 2022Abstract Windage is the effect of aerodynamic drag on the surfaces of a rotating system due to fluid shear effects. The fluid-friction losses that occur on the rotor of rotating machines often constitute a non-negligible drag on the system that must be estimated for proper sizing of the driving or driven element.
Fernando Karg Bulnes +2 more
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Volume 6: Education; Electric Power; Energy Storage; Fans and Blowers, 2023
Energy storage has recently emerged as a topic of discussion in the context of the energy transition away from fossil fuels. The flywheel energy storage system (FESS) is gaining popularity due to its distinct advantages, which include long life cycles,
Mahmoud Eltaweel +1 more
semanticscholar +1 more source
Energy storage has recently emerged as a topic of discussion in the context of the energy transition away from fossil fuels. The flywheel energy storage system (FESS) is gaining popularity due to its distinct advantages, which include long life cycles,
Mahmoud Eltaweel +1 more
semanticscholar +1 more source
Evaluation and Suppression of Windage Loss for High-Speed Flux-Switching Permanent Magnet Machine
International Conference on Electrical Machines and Systems, 2023In this paper, the issue of large windage loss caused by the salient pole gear rotor of the flux-switching permanent magnet (FSPM) machines during high-speed rotation is investigated.
Wenfei Yu, Zhongze Wu, Wei Hua
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Windage Loss and Flow Characteristics in Back Gap of Radial Inflow Impellers With Steam Medium
Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, 2023The impeller back gap of radial inflow turbines generates disk-type windage loss, and it is necessary to accurately predict and minimize the loss. In this paper, a steady-state numerical analysis for a two-stage radial inflow turbine with steam as ...
Zhuobin Zhao +4 more
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Method for Quick Prediction of Windage Power Loss
2014 Conference on Information Storage and Processing Systems, 2014This work introduces a method by using an empirical formula to quickly predict windage caused power loss of hard disk drives. The results obtained by the empirical formula are compared with those obtained by computational fluid dynamics (CFD) simulations and validated by the experimental measurement data.
Q. D. Zhang +3 more
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Windage Loss and Flow Characteristics in Impeller Back Clearance of sCO2 Centrifugal Compressor
Volume 9: Supercritical CO2, 2022In this paper, the windage loss and the flow characteristics in impeller back clearance divided into disk-type and shaft-type clearance for sCO2 compressor are investigated by numerical method.
Lehao Hu +4 more
semanticscholar +1 more source