Results 271 to 280 of about 21,971 (313)
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Source modeling for the axial fan noise
The Journal of the Acoustical Society of America, 1997A program for predicting the sound power level from earth-moving equipment is under development in SHI. Fan noise is one of the major sources, whose contribution is greater than 40% of the total radiated noise power. The experiments show that both the blade passing frequency (BPF) component and the broadband component are important, and the directivity
Jongmin Kang, Seungchul Park
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Flow characteristics of axial fan with shroud
Journal of Fluid Machinery, 2008Axial fan without static blades requires the duct as a guidance for unskewed inflows. This work examined the geometric effects of a duct guided the in and out flows through an impeller. The present methodologies are computational predictions with parallel work by experimental validation. Several different positions of a rotor in a duct are proposed for
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Noise Reduction Measures for an Axial Fan
Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery, 2017The aim of this work is to investigate how a reduction of the noise emissions can be achieved by means of an irregular arrangement of the blades of the fan impeller and an additional blade skewing. For this purpose a fan impeller with a defined operating point is designed. Preliminary investigations have shown that a volumetric flow rate
Andreas Swienty +3 more
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Combining Deep Neural Network with Genetic Algorithm for Axial Flow Fan Design and Development
Processes, 2023Elsa Chaerun Nisa +2 more
exaly
A-to-Z Guide to Thermodynamics, Heat and Mass Transfer, and Fluids Engineering, 2006
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