Numerical Study on Local Entropy Production Mechanism of a Contra-Rotating Fan [PDF]
Entropy, 2023 Contra-rotating fans (CRFs) have garnered significant attention due to their higher power-to-weight ratio compared to traditional fans; however, limited focus has been given to the localization and development of local aerodynamic losses.
Xingyu Jia, Xi Zhang
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Numerical simulation of unsteady aerodynamic interactions of contra-rotating axial fan. [PDF]
PLoS ONE, 2018 This paper describes the investigations performed to better understand unsteady effect that develop in a contra-rotating axial fan. More specifically, this study focuses on rotor-rotor interactions effects on unsteady characteristic and blade aerodynamic
Hengxuan Luan +2 more
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Effect of the Radial Velocity Distribution on the Loss Generation of a Contra-Rotating Fan in a Ventilation System [PDF]
Entropy, 2023 Quantification of the loss generation of ducted contra-rotating fan (CRF) blades is difficult to achieve, since there are no guide vanes between rotors.
Xingyu Jia, Xi Zhang, Kui Guo, Xuehui Li
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Coupling analysis of contra-rotating fan interstage pressure pulsation and blade vibration based on wavelet reconstruction. [PDF]
PLoS ONE, 2021 In recent years, the flow characteristics research of the interstage region in counter-rotating axial fans in terms of fluid dynamics has attracted much attention.
Xinzhe Zhang +4 more
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Experimental and numerical investigation of endwall flow control through air injection in a contra rotating fan [PDF]
Scientific ReportsThis study reports on an experimental and numerical investigation of tip leakage flow control and its effects on the endwall flow structure and stall evolution of a contra-rotating fan.
Maryam Sadoddin, Hossein Khaleghi
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Influence of blade installation angle spanwise distribution on the energy characteristics of mining contra-rotating axial flow fan [PDF]
Scientific ReportsAs the global demand for energy conservation increases, achieving efficient energy conversion in fans has become a significant challenge in the field of mine ventilation.
Yongping Chen +7 more
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The axillary approach to raising the latissimus dorsi free flap for facial re-animation: a descriptive surgical technique. [PDF]
Arch Plast Surg, 2015 The latissimus dorsi flap is popular due to the versatile nature of its applications. When used as a pedicled flap it provides a robust solution when soft tissue coverage is required following breast, thoracic and head and neck surgery.
Leckenby J, Butler D, Grobbelaar A.
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International Journal of Rotating Machinery, 2015 The present paper is an attempt in understanding the stall inception mechanism in a low speed, contra rotating axial flow fan stage, using wavelet transforms.
Tegegn Dejene Toge, A. M. Pradeep
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Effect of Circumferential Casing Treatment on Low-Speed Contra-Rotating Fans
Journal of Applied Fluid Mechanics, 2020 The benefits of circumferential groove casing treatment on the performance of a low-speed contra-rotating fan are investigated. Three-dimensional, time-dependent simulations are carried out with the k-ω SST-SAS hybrid turbulence model using the open ...
M. Heinrich, H. Khaleghi, C. Friebe
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Quasi-unsteady Flow Field Computation and Performance Prediction of Contra-Rotating Fan [PDF]
MATEC Web of Conferences, 2020 Discussion of numerical flow field prediction with two rotor-stator interface models is presented in the paper. The mixing plane and harmonic models are applied to contra rotating fan. Both models confirmed good performance and high power density leading
Červenka Bystrík +2 more
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