Flow and Noise Characteristics of Centrifugal Fan under Different Stall Conditions
Joint Authors
Liang, Shoufang
Zhang, Lei
Hu, Chenxing
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-22
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
An implicit, time-accurate 3D Reynolds-averaged Navier-Stokes (RANS) solver is used to simulate the rotating stall phenomenon in a centrifugal fan.
The goal of the present work is to shed light on the flow field and particularly the aerodynamic noise at different stall conditions.
Aerodynamic characteristics, frequency domain characteristics, and the contours of sound power level under two different stall conditions are discussed in this paper.
The results show that, with the decrease of valve opening, the amplitude of full pressure and flow fluctuations tends to be larger and the stall frequency remains the same.
The flow field analysis indicates that the area occupied by stall cells expands with the decrease of flow rate.
The noise calculation based on the simulation underlines the role of vortex noise after the occurrence of rotating stall, showing that the high noise area rotates along with the stall cell in the circumferential direction.
American Psychological Association (APA)
Zhang, Lei& Liang, Shoufang& Hu, Chenxing. 2014. Flow and Noise Characteristics of Centrifugal Fan under Different Stall Conditions. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-469299
Modern Language Association (MLA)
Zhang, Lei…[et al.]. Flow and Noise Characteristics of Centrifugal Fan under Different Stall Conditions. Mathematical Problems in Engineering No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-469299
American Medical Association (AMA)
Zhang, Lei& Liang, Shoufang& Hu, Chenxing. Flow and Noise Characteristics of Centrifugal Fan under Different Stall Conditions. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-469299
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-469299