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Aero-Acoustic Analysis of an Axial Fan [PDF]
, 2022 New fan concepts must achieve high efficiency and low noise levels in order to offer relevant alternatives in an increasingly competitive market. Analytical tools based on simplified theoretical approaches allow to quickly propose interesting concepts.
Pépin, Patrice, Sanjosé, Marlène
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Axial fan, centrifugal fan, and electronic equipment employing one of these fans
The Journal of the Acoustical Society of America, 2003A low-noise axial fan is provided with whirring sound minimized. The axial fan includes a plurality of blades arranged around a rotation axis at predetermined layout pitches. The blades are arranged at varied layout pitches. For instance, the layout pitch between the two adjacent blades may be different from the layout pitch between the remaining ...
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Effect of Axial Sweep and Tip Extension on Performance of an Axial Fan
Volume 1: Advances in Aerospace Technology, 2016Performance enhancement in terms of stall margin increment, increased pressure rise coefficient and increased efficiency is of great need for low speed axial fans. Stacking line modifications in terms of sweep, skew, dihedral or combination of these, as well as blade tip geometry modifications are assumed to be one of the ways to achieve finite ...
Ankit Bhai Patel +2 more
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2020
The main objective of this study is to determine the flow in and around a cooling fan of an automotive engine by means of CFD computations using the commercial software package ANSYS Fluent. Two distinct external disturbances are applied: external flow characterized by the in-flow velocity U and covering plates placed on the suction side of the fan ...
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The main objective of this study is to determine the flow in and around a cooling fan of an automotive engine by means of CFD computations using the commercial software package ANSYS Fluent. Two distinct external disturbances are applied: external flow characterized by the in-flow velocity U and covering plates placed on the suction side of the fan ...
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Spatial Analysis of Axial Fan Psychoacoustic Metrics
Proceedings of the 11th Convention of the European Acoustics Association Forum Acusticum / EuroNoise 2025Opis vira z dne 10. 12. 2025.
Cerkovnik, Nejc +1 more
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Unsteady Pressure Measurement of an Axial Fan
Fluids Engineering, 2001Abstract An unsteady pressure measurement system was developed to measure the unsteady pressure field of an axial fan. The fan unsteady pressure fields of an inlet and outlet were obtained at three axial positions for seven-radial directions. The results showed that there is a relatively long response time for pressure drop both in inlet
C. Xu, R. S. Amano
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Volume 5: Turbo Expo 2004, Parts A and B, 2004
Flow reversal in axial fans is usually performed by the change of revolution direction and by stator vanes turning. Derived relations express the relative position of characteristics curves for reverse and normal flows. The ratio of volume flow rates at these conditions decreases with rotor blade profiles camber (aerodynamic loading) and with flow ...
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Flow reversal in axial fans is usually performed by the change of revolution direction and by stator vanes turning. Derived relations express the relative position of characteristics curves for reverse and normal flows. The ratio of volume flow rates at these conditions decreases with rotor blade profiles camber (aerodynamic loading) and with flow ...
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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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Constant acoustic fan curves for 92 mm axial fans.
The Journal of the Acoustical Society of America, 2010The noise emission of fans changes as a function of the operating point. Airflow and acoustic fan plenum experiments can be used to characterize these effects to estimate noise under installed conditions. Recently, the concept of iso-acoustic fan curves was introduced by various authors, and results were presented for small radial blowers and some ...
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Optimization design of axial fan blade
Journal of the Chinese Institute of Engineers, 2019ABSTRACTA series airfoil was obtained through optimization design which aimed to promote lift–drag ratio, and the new airfoil series was used to construct a blade.
Yujing Wu, Diangui Huang
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