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Unsteady flow condition of contra-rotating small-sized axial fan
Journal of Thermal Science, 2011Small-sized axial fans are used as air cooler for electric equipments. But there is a strong demand for higher power of fans according to the increase of quantity of heat from electric devices. Therefore, higher rotational speed design is conducted, although, it causes the deterioration of efficiency and the increase of noise.
T. Shigemitsu +4 more
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Design and Internal Flow Analysis of a Ducted Contra-Rotating Axial Flow Fan
Volume 1: Advances in Aerospace Technology, 2014This paper presents the design procedure of a ducted contra-rotating axial flow fan and investigates the flow behavior inside it using ANSYS CFX-15 flow solver. This study investigates parameters such as pressure ratio, inlet mass flow rate and efficiency in different operating points. This system consists of two rotors with an outer diameter of 434 mm
Ali Mohammadi, Masoud Boroomand
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Advanced Materials Research, 2012
To improve the impeller safety and reliability of extractable explosion-proof contra-rotating axial fan for mine local ventilation, Extractable Fan FBDC№9.0/2×30 was taken as the research object, and an approximate three-dimensional finite element computation model was built by using ANSYS software. The stress and displacement were calculated, too.
Qiu Dong He, Wen Qi Yu, Shu Fen Xiao
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To improve the impeller safety and reliability of extractable explosion-proof contra-rotating axial fan for mine local ventilation, Extractable Fan FBDC№9.0/2×30 was taken as the research object, and an approximate three-dimensional finite element computation model was built by using ANSYS software. The stress and displacement were calculated, too.
Qiu Dong He, Wen Qi Yu, Shu Fen Xiao
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A fully reversible axial fan with two contra-rotating impellers [PDF]
, 2022 The objective of this paper is the design, manufacture and test of a fully reversible axial fan. The fundamental layout of the fan chosen consists of two identical contra-rotating impellers without guide vanes, placed in mirror image to each other in a duct-type housing.
Bamberger, Konrad +2 more
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Blade Tip Flow of Contra-Rotating Small-Sized Axial Fan at Design Flow Rate
The Proceedings of Mechanical Engineering Congress, Japan, 2016Katsuhiko HIROSAWA +2 more
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Internal Flow Conditions of Contra-Rotating Small-Sized Axial Fan
ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 2011Small-sized axial fans are used as air cooler for electric equipments. But there is a strong demand for higher power of fans according to the increase of quantity of heat from electric devices. Therefore, higher rotational speed design is conducted, although, it causes the deterioration of efficiency and the increase of noise.
Toru Shigemitsu +3 more
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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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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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Performance and Flow Conditions of Contra-Rotating Small-Sized Axial Fan
ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C, 2010Small-sized axial fans are used as air cooler for electric equipments. But there is a strong demand for higher power of fans according to the increase of quantity of heat from electric devices. Therefore, higher rotational speed design is conducted although, it causes the deterioration of efficiency and the increase of noise.
Toru Shigemitsu +3 more
openaire +1 more source