Results 261 to 270 of about 142,039 (311)

Modeling Electronic Cooling Axial Fan Flows

Journal of Electronic Packaging, 2000
To address the requirement for prediction and understanding of airflow in forced convection cooled electronic systems, a detailed experimental investigation of the outlet flow of typical axial cooling fans has been performed. The flow is shown to be complex over much of the fans operational range, with significant radial and tangential velocities and ...
R. Grimes, M. Davies, J. Punch, T. Dalton, R. Cole   +4 more
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Noise Radiation from Axial Flow Fans

SAE Technical Paper Series, 1997
<div class="htmlview paragraph">A semi-empirical formula [<span class="xref">1</span>] for predicting noise spectra of an engine cooling fan assembly is developed. In deriving this formulation it is assumed that sound radiation from an axial flow fan is primarily due to fluctuating forces exerted on the fan blade surface.
Shigong Su, Sean F. Wu, Hemant Shah
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Constant acoustic fan curves for 92 mm axial fans.

The Journal of the Acoustical Society of America, 2010
The 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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Axial Fan Optimization Using 3D Codes

Volume 6: Turbo Expo 2005, Parts A and B, 2005
The paper presents examples of research aimed at axial fan optimization: both mechanical and aerodynamic. The optimization is based on up-to-date analysis and optimization tools. As the analysis tools the well-known commercial software packages (FINE/Design3D, CFX-TASCflow and ANSYS) are used, as well as the models developed by NPO Saturn.
M. L. Kuzmenko, I. N. Egorov, Yu. N. Shmotin   +2 more
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Noise generation in axial flow fans

Journal of Sound and Vibration, 1966
Abstract An empirical equation for fan noise is presented. The equation predicts, with fair accuracy, the noise of several fan configurations tested, yielding noise spectra over the frequency range 40 to 10,000 Hz at various fan speeds and over the measurable range of fan performance characteristics.
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Investigation of power distribution on an axial fan

2016 15th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm), 2016
Forced convection cooling systems utilize fans which can be axial or radial, small or large in many different configurations. Efficiency of a fan depends on its electrical and mechanical designs as well as the environmental conditions that the fan is exposed to. Typically, the overall efficiency of an axial fan varies between 15 to 40 percent.
Hashim, Hafiz Muhammad, Yasa, Y., Dogruoz, M. B., Arık, Mehmet, Mese, E.   +4 more
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Sound generation mechanism in low speed axial fans.

The Journal of the Acoustical Society of America, 2010
Because of the global civil regulation concerning acoustic emission, the goal of the manufacturers is to substantially decrease the noise radiated by the low-speed fans, without degrading their aerodynamic performance. One of the main goal to accomplish this target is the evaluation of the unsteady aerodynamic sources in the fan rotor responsible for ...
S. BIANCHI, CORSINI, Alessandro, A. G. SHEARD   +2 more
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CFD Analyzes of an Axial Fan

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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Optimisation of efficiency of axial fans

2014
A three-stage research project has been executed to develop ducted axial-fans with increased efficiency. In the first stage a design method has been developed in which various conflicting design criteria can be incorporated. Based on this design method, an optimised design has been determined through the use of a genetic optimisation algorithm.
Kruyt, Nicolaas P., Pennings, P.C., Faasen, R.   +2 more
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Generator Fan Test Facility to Quantify Axial Flow Fan Aerodynamic Performance

ASME 2010 Power Conference, 2010
The General Electric fan test facility has been re-installed and commissioned in the Laboratory for Noise and Vibration Control Research, located on the second floor of the Jonsson Engineering Center (JEC 2110) in the Department of Mechanical, Aerospace and Nuclear Engineering at Rensselaer Polytechnic Institute, Troy NY. RPI provides a unique venue to
A. I. C. Hunter, H. A. Scarton, K. R. Wilt, S. A. Salamah, D. Story   +4 more
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