0
TECHNICAL PAPERS

Exit Flow Field and Performance of Axial Flow Fans

[+] Author and Article Information
S. C. Yen1

Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Keelung, Taiwan 202, ROC

Frank K. T. Lin

Mechanical Industry Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan 310, ROC

1

Corresponding author; e-mail: scyen@mail.ntou.edu.tw.

J. Fluids Eng 128(2), 332-340 (Sep 19, 2005) (9 pages) doi:10.1115/1.2169809 History: Received August 26, 2004; Revised September 19, 2005

Flow fields near the exit and the global performance parameters of the various types of axial flow fans are studied with Particle Image Velocimetry and a standard AMCA 210 flow bench. The fans used in this study included the shrouded, shroudless, and winglet-blade types. The velocity vectors, streamlines, vorticity contours, velocity distributions, and performances are presented and discussed. The flow patterns on the radial and axial planes show that a vortex always exists near the exit of the fans at various impeller angles. The experimental results demonstrate that the shrouded fan with winglets has the most stable flow field and the best fan performance.

FIGURES IN THIS ARTICLE
<>
Copyright © 2006 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Experimental setup

Grahic Jump Location
Figure 2

Outlines and specifications of the fans

Grahic Jump Location
Figure 3

Schematic of system setup

Grahic Jump Location
Figure 4

Flow patterns on radial plane flows of Fan-A, z∕DHub=1.0, N=4800rpm, at (a)θ=0deg; (b)θ=10deg; (c)θ=20deg; and (d)θ=30deg, respectively

Grahic Jump Location
Figure 5

Vorticity contour on radial plane of Fan-A, z∕DHub=1.0, N=4800rpm, at (a)θ=0deg; (b)θ=10deg; (c)θ=20deg; and (d)θ=30deg, respectively

Grahic Jump Location
Figure 6

Velocity profiles of Fan-A on the radial plane, z∕DHub=1.0, N=4800rpm, for (a)Vx, (b)Vy, and (c)∣Vradial∣, respectively

Grahic Jump Location
Figure 7

Velocity profiles of Fan-B on the radial plane, z∕DHub=1.0, N=3300rpm, for (a)Vx, (b)Vy, and (c)∣Vradial∣, respectively

Grahic Jump Location
Figure 8

Velocity profiles of Fan-C on the radial plane, z∕DHub=1.0, N=2400rpm, for (a)Vx, (b)Vy, and (c)∣Vradial∣, respectively

Grahic Jump Location
Figure 9

Flow field patterns on the axial plane: (a) Fan-A, θ=0deg; (b) Fan-A, θ=20deg; (c) Fan-C, θ=0deg; and (d) Fan-C, θ=33deg

Grahic Jump Location
Figure 10

Velocity profiles of Fan-A on the axial plane, z∕DHub=1.0, N=4800rpm, for (a)Vx, (b)Vy, and (c)∣Vaxial∣, respectively

Grahic Jump Location
Figure 11

Velocity profiles of Fan-B on the axial plane, z∕DHub=1.0, N=3300rpm, for (a)Vx, (b)Vy, and (c)∣Vaxial∣, respectively

Grahic Jump Location
Figure 12

Velocity profiles of Fan-C on the axial plane, N=2400rpm at x∕DHub=−1.75(solid rectangles) and x∕DHub=−2.37(circles): (a)Vx, θ=0deg; (b)Vz, θ=0deg; (c)∣Vaxial∣, θ=0deg; (d)Vx, θ=33deg; (e)Vz, θ=33deg; and (f)∣Vaxial∣, θ=33deg

Grahic Jump Location
Figure 13

Total performance of (a) head coefficient Ψ and (b) power coefficient Λ as a function of flow coefficients Φ

Grahic Jump Location
Figure 14

The fan efficiency η as a function of flow coefficients Φ

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In