Results 231 to 240 of about 239,240 (300)
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Effect of porous casing on small axial-flow fan noise
, 2021A novel casing treatment is studied to suppress the tip leakage vortex and postpone stall inception, leading to significant noise reduction. The new casing is made by open-cell metal foam, and its effect on both aerodynamic and acoustic performance of an
Naitong Liu +3 more
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Journal of Fluids Engineering, 2021
In a boundary layer ingesting (BLI) propulsion system, the fan is continuously exposed to inflow distortions. The distorted inflows lead to nonuniform loss distributions along the radial and circumferential directions.
Zhe-chao Yang +3 more
semanticscholar +1 more source
In a boundary layer ingesting (BLI) propulsion system, the fan is continuously exposed to inflow distortions. The distorted inflows lead to nonuniform loss distributions along the radial and circumferential directions.
Zhe-chao Yang +3 more
semanticscholar +1 more source
Numerical Analysis of a Novel Casing Treatment in an Axial Flow Fan
Journal of Propulsion and PowerThe present paper reports the use of a slotted casing treatment of trapezoidal shape to enhance the stall margin of an axial flow fan. The Taguchi method was used to optimize the rectangular slotted casing treatment based on that which the trapezoidal ...
Gautham A. Amin, P. Salunkhe, C. Kini
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Journal of turbomachinery
An optimized axial slot casing treatment (OPCT) was designed that experimentally improves the stall margin by 7.31% with the efficiency gain of 1.94% at a design speed of 100% in a high-speed axial flow fan.
Yihan Li +6 more
semanticscholar +1 more source
An optimized axial slot casing treatment (OPCT) was designed that experimentally improves the stall margin by 7.31% with the efficiency gain of 1.94% at a design speed of 100% in a high-speed axial flow fan.
Yihan Li +6 more
semanticscholar +1 more source
The Journal of the Acoustical Society of America, 2010
An axial flow fan of high efficiency and low noise level is provided. The fan includes a motor, an impeller having a plurality of blades around a hub fitted to the motor, and a fan casing having an air inlet on one side and an air outlet on the other, wherein a radial position with a maximum setting angle in a blade section, and a radial position with ...
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An axial flow fan of high efficiency and low noise level is provided. The fan includes a motor, an impeller having a plurality of blades around a hub fitted to the motor, and a fan casing having an air inlet on one side and an air outlet on the other, wherein a radial position with a maximum setting angle in a blade section, and a radial position with ...
openaire +1 more source
International Journal of Turbo & Jet-Engines
The present study aims to identify the suitable tip clearance and volumetric flow rates for low-speed axial flow fans. The performance of an axial fan depends on various parameters like fan speed, available tip clearance gap, volumetric flow rate, power ...
Jignesh R. Vala +3 more
semanticscholar +1 more source
The present study aims to identify the suitable tip clearance and volumetric flow rates for low-speed axial flow fans. The performance of an axial fan depends on various parameters like fan speed, available tip clearance gap, volumetric flow rate, power ...
Jignesh R. Vala +3 more
semanticscholar +1 more source
Designing Axial Flow Fan for Flow and Noise
SAE Technical Paper Series, 1999<div class="htmlview paragraph">A comprehensive finite element methodology is developed to predict the compressible flow performance of a non-symmetric 7-blade axial flow fan, and to quantify the source strength and sound pressure levels at any location in the system.
Subrata Roy, Phillip Cho, Fred Périé
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Sources of Noise in Axial Flow Fans
The Journal of the Acoustical Society of America, 1971Experiments and theory relating to fan noise sources are reviewed with emphasis on axial flow machines. At supersonic rotor speeds, the steady shock pattern attached to a rotor is an efficient radiator of sound. In most practical cases of subsonic rotor operation, however, direct radiation from the rotor-locked pressure field is negligible compared ...
B. D. Mugridge, C. L. Morfey
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Investigation of Flapping Wings as an Alternative to Axial Flow Fans
AIAA SCITECH 2022 Forum, 2022© 2022 by MBDA UK Ltd. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.Flapping wings appear to be an innovative approach as an alternative to axial flow fans. In this study, the flapping motion has been defined as a linear combination of pitching and plunging.
KAYA, MUSTAFA +2 more
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Journal of turbomachinery, 2020
This paper describes a multidisciplinary design optimization for performance improvement of an electric-ducted fan rotor using free-form deformation (FFD) and data mining techniques.
R. Adjei +3 more
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This paper describes a multidisciplinary design optimization for performance improvement of an electric-ducted fan rotor using free-form deformation (FFD) and data mining techniques.
R. Adjei +3 more
semanticscholar +1 more source