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http://dx.doi.org/10.5293/KFMA.2002.5.3.015

A Study on the Flow Characteristics of an Axial Flow Fan by Unsteady Pressure Measurement  

Kang, Chang-Sik (KIST열 유동제어연구센터)
Shin, You-Hwan (KIST열 유동제어연구센터)
Kim, Kwang-Ho (KIST열 유동제어연구센터)
Lee, Du-Yeol (KIST열 유동제어연구센터)
Publication Information
The KSFM Journal of Fluid Machinery / v.5, no.3, 2002 , pp. 15-24 More about this Journal
Abstract
This paper presents an experimental study on the unsteady flow phenomena such as leakage flow and rotating stall which have influences on the performance and stability of an axial flow fan. For this study, unsteady pressure were measured using high frequency pressure transducers mounted on the easing wall of rotor passage and analyzed by Double Phase-Locked Averaging Technique. As the flow rate was reduced to near stall point, the pressure difference between the pressure and the suction side of the blade was increased especially new the leading edge and the lowest pressure zone of suction side was gradually developed. From the result of unsteady pressure field on the casing wall, one period of rotating stall was divided into three zones and the flow characteristics on each zone were described in detail.
Keywords
Axial flow Fan; Rotating Stall; Leakage Flow; Reverse Flow; Double Phase-Locked Averaging Technique; Bubbled Region;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Three-Dimensional Turbulent Flow in The Tip Region of an Axial Compressor Rotor Passage at a Near Stall Condition /
[ Ma, H.;Jiang, H. ] / ASME TURBO EXPO 2001
2 Blade Exitation by Broad-Band Pressure Fluctuations in a Centrifugal Compressor /
[ Haupt, U.;Rautenberg, M.;Abdel-Hamid, A.N. ] / J. of Turbomachinery   DOI   ScienceOn
3 Distinction Between Different Types of Impeller and Diffuser Rotating Stall in a Centrifugal Compressor with Vaneless Diffuser /
[ Fringe, P.;Van Den Braembussche, R. ] / J. of Engineering for Power   DOI
4 The Measurement and Interpretation of Flow Within Rotating Stall Cells In Axial Compressors /
[ Day, I. J.;Cumpsty, N.A. ] / Journal Mechanical Engineering Science   DOI   ScienceOn
5 선회실속하의 원심 임펠러출구 유동 특성 /
[ 신유환;김광호 ] / 유체기계저널   과학기술학회마을
6 Three-Dimensional Flow Field in the Tip Region of a Compressor Rotor Passage-PartII: Turbulence Properties /
[ Lakshminarayana, B.;Pouagare, M;Davino, R. ] / J. of Engineering for Power   DOI
7 임펠러 출구에서의 유동 측정 기법 /
[ 신유환;김광호 ] / 유체기계저널   과학기술학회마을
8 Experimental Analysis Methods for Unsteady Flows in Turbomachines /
[ Larguier, R. ] / J. of Engineering for Power   DOI
9 Rotating Blade Flow Instability as a Source of Noise in Axial Turbomachines /
[ Kameier, F.;Neise, W. ] / J. of Sound and Vibration   DOI   ScienceOn
10 Measurement of Three Dimensional Flow Field behind on Impeller by Means of Periodc Multisampling with a Slanted Hot Wire /
[ Kuroumaru, M.;Inoue, M.;Hikaki, T. ] / JSME Paper   DOI