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Contra-rotating fans noise prediction for jet engine performance optimization
The Journal of the Acoustical Society of America, 2008This work fits within the framework of the European research project VITAL, which is dedicated to the development of technologies aimed at reducing the environmental impact of jet engines. In this respect, a new concept of ducted contra-rotating fans is investigated.
Dax Au, Alexandre Leblanc
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Effect of Tandem Blading in Contra-Rotating Axial Flow Fans
Volume 2A: Turbomachinery, 2018With the ever-increasing demand for improved fuel efficiency and lower emissions, there is a significant emphasis on finding innovative design solutions that can replace or significantly improve the present-day turbomachinery designs. The concepts of contra-rotation and tandem blade configuration are two different methods of achieving better ...
Manas Madasseri Payyappalli +1 more
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Numerical Investigations on the Conceptual Design of a Ducted Contra-Rotating Fan
Volume 1A: Aircraft Engine; Fans and Blowers, 2014The Advisory Council for Aeronautics Research in Europe (ACARE) has set an ambitious array of objectives to be accomplished by 2050. It is often claimed that complying with those targets will not require evolution but, rather, revolution. If the growth in aviation has to be sustained in the future then we must come up with radical aircraft and engine ...
Huo, C., González Díez, N., Rao, A.G.
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Aerodynamic Design Aspects for Small-Size Transonic Contra-Rotating Fan Stage
ASME 2023 Gas Turbine India Conference, 2023Abstract Contra-Rotating fan stage presents a potential solution to address the demand for sustainable and efficient aircraft requirements. The objective of this work is to design and investigate numerically a contra-rotating axial fan stage for a compact transonic engine.
Manideep Pasupula, Chetan S. Mistry
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Flow Studies in Ducted Twin-Rotor Contra-Rotating Axial Flow Fans
Volume 1: Turbomachinery, 1992The design and testing of a 400 mm diameter contra-rotating fan unit was undertaken to study the flow behavior through the contra-rotating fans, and to find ways and means of improving their design and performance. The performance characteristics of the two-fan unit have shown that large overall stall margins can be achieved.
Bhaskar Roy +5 more
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Proceedings of Global Power & Propulsion Society, 2023
Small axial flow fans are frequently used as air coolers or ventilators, and their aeroacoustic mechanism is similar to those found in larger machinery like aeroengines. Currently, there is a growing interest in adopting contra-rotation due to its inherent aerodynamic advantages.
Tianyu Xu +3 more
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Small axial flow fans are frequently used as air coolers or ventilators, and their aeroacoustic mechanism is similar to those found in larger machinery like aeroengines. Currently, there is a growing interest in adopting contra-rotation due to its inherent aerodynamic advantages.
Tianyu Xu +3 more
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Performance and internal flow of sirocco fan using contra-rotating rotors
Journal of Thermal Science, 2008A sirocco fan using contra-rotating rotors in which an inner rotor is settled inside the sirocco fan rotor and each rotor rotates in an opposite direction was proposed for the purpose of getting the higher pressure and making the structure of a sirocco fan more compact. If the high discharge pressure is obtained with the adoption of the contra-rotating
J. Fukutomi, T. Shigemitsu, T. Yasunobu
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Parameterized modeling of contra-rotating axial flow fan based on SolidWorks
International Conference on Software Intelligence Technologies and Applications & International Conference on Frontiers of Internet of Things 2014, 2014A parametric modelling method of contra-rotating axial flow fan based on SolidWorks is presented in order to increase its modelling efficiency. The coordinates' transformation is developed, by which two-dimensional cross-section parameters of fan blade are transformed to three-dimensional spaces.
null Xiaobo Sun +3 more
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Theoretical Acoustic Prediction of the Aerodynamic Interaction for Contra-Rotating Fans
AIAA Journal, 2018The theoretical prediction formula of far-field interaction tonal noise radiation by contra-rotating fans in free space with point force approximation is derived as the extension of the method of W...
Chen Wang, Lixi Huang
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Numerical Study on Aeroacoustics Behaviour of Contra-Rotating Fans
International Journal of Engineering Trends and Technology, 2021Bukhari Manshoor +4 more
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