Browse > Article

Effects of a Guide Fin Blade on the Flow Characteristics in a Ventilating Axial Fan  

Park, Hong-Kwang (Department of Precision Mechanical Engineering, Chonbuk National University)
Lee, Jee-Keun (Division of Mechanical & Aerospace System Engineering, Chonbuk National University, RCIT)
Rho, Byung-Joon (Division of Mechanical & Aerospace System Engineering, Chonbuk National University, RCIT)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.19, no.12, 2007 , pp. 874-882 More about this Journal
Abstract
The effects of a guide fin blade on the flow characteristics in a ventilating axial fan were investigated experimentally. The guide fins were setup onto the pressure surface of the blade, and their effects on the flowrate were evaluated. Two types of the guide fin blade were designed. One is the stem fin blade, and the other is the radial fin blade. The stem fin is designed normal to the circumference of a circle, and the radial fin is designed along the circumference of a circle. The results from the guide fin blade fans are compared with that of the blade without guide fins. The position and the geometry of the radial fin setting up on the blade have an effect on the increase of flowrate with the minor sacrifice of rotational speed of the blades. The radial fin positioning at 0.84 times blade diameter shows highest performance in the flowrate. The increase of the blade weight resulting from applying the guide fins shows minor effect on the variation of rotational speed of the blades.
Keywords
Axial fan; Blade; Guide fin; Stem fin; Radial fin;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Estevadeordal, J., Gogineni, S., Copenhaver, W., Bloch G. and Brendel M., 2000, Flow field in a low-speed axial fan: a DPIV investigation, Experimental Thermal and Fluid Science, Vol. 23, pp. 11-21   DOI   ScienceOn
2 Hunter I. H. and Cumpsty, N. A., 1982, Casing wall boundary-layer development through an isolated compressor rotor, ASME J. Eng. Power, Vol. 104, pp. 805-818   DOI
3 Lee, G. H., Myung, H.J. and Back, J. H., 2003, Effect of blade loading on the structure on tip leakage flow in a forwardswept axal-flow fan, Journal of SAREK, Vol. 15, No.4, pp.294-304
4 Masad, J. A. and Malik, M. R., 1995, Link between flow separation and transition onset, AIAA Journal, Vol. 33, No.5, pp. 882-88   DOI   ScienceOn
5 KSA, KS B 6311
6 Kim, J. W. and Nam, I. W., 2001, Reverse flow on blade-surface of propeller fan, Journal of KFMA, Vol. 4, No.2, pp.7-14
7 Shyu, J.-M,. 1993, Axial-flow fan-blade with profiled guide fins, United States Patent, Patent No 5, pp. 193-983
8 Koo, J. I., Chung, J. T. and Kim, K. H., 2001, Study on performance prediction of axial flow fan with various stagger angles blades, Proceedings, SAREK Summer Annual Meeting, pp. 1257-1261
9 Cho, S. S., Choi, J. H. and Kim, K. Y., 1998, Flow analysis and design optimization of an axial-flow fan, Proceedings, SAREK Winter Annual Meeting, pp.135-140
10 Kim, C. S., Shin, Y. H., Kim, K. H. and Chung, J. T., 1999, Experimental study on effects of stagger angle on performance and flow characteristics of axial fan, Proceedings, SAREK Summer Annual Meeting, pp. 453-457
11 Kim, K. Y., Kim, J. Y. and Chung, D. S., 1997, Three-dimensional analysis of the flow through an axial-flow fan, KSME Journal(B), Vol. 21, No.4, pp. 541-550
12 Pandya, A. and Lakshminarayana, B., 1983, Investigation of the tip clearance flow inside and at the exit of a compressor rotor passage-part 1: Mean velocity field, ASME J. Eng. Power, Vol. 105, pp. 1-12   DOI
13 Kamieier F. and Neise W., 1997, Experimental study of tip clearance losses and noise in axial turbomachines and their reduction, Jouranl of Turbomachinery, Vol. 119, pp.460-471   DOI   ScienceOn