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http://dx.doi.org/10.5762/KAIS.2018.19.12.896

A Study on Three-Dimensional Flow Analysis and Noise Source of Sirocco Fan  

Kang, Jeong-Seok (Division of Mechanical Engineering, Chonbuk National University)
Kim, Jin-Taek (Division of Mechanical Engineering, Chonbuk National University)
Lee, Cheol-Hyung (Corp. Dae Ryun)
Baek, Byung-Joon (Division of Mechanical Engineering, Chonbuk National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.12, 2018 , pp. 896-902 More about this Journal
Abstract
This study examined the flow and noise inside a sirocco fan for ventilation as a commercial program. To confirm only the location and power of the noise source, flow analysis was performed with steady state flow analysis. Through flow analysis, the flow was observed in the sirocco fan and the velocity vector. The pressure distribution inside was observed with contours. From the results of steady analysis, the position and size of the noise source could be seen using the 'Curle surface acoustic power' and 'Proudman acoustic power'. The Curle surface acoustic power can be used to observe the noise from the surface. The Proudman acoustic power can be used to detect noise generated in the flow region because the position and size of the noise source generated inside the sirocco fan can be seen only in the steady state. Therefore it is necessary to further analyze the unsteady state to check the frequency of the noise generated. This study provides basic data for improving the performance of the Sirocco fan and reducing the noise.
Keywords
Flow; Noise source; Pressure; Sirocco fan; Sound power level; Velocity;
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