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http://dx.doi.org/10.7316/KHNES.2014.25.2.191

Performance Characteristics of Double-Inlet Centrifugal Blower According to Inlet and Outlet Angles of an Impeller  

Lee, Jong-Sung (Environmental Engineering Research Div., Korea Institute of Construction Technology)
Jang, Choon-Man (Environmental Engineering Research Div., Korea Institute of Construction Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.25, no.2, 2014 , pp. 191-199 More about this Journal
Abstract
Effects of design variables on the performance of a double-inlet centrifugal blower have been analyzed based on the three-dimensional flow analysis. Two design variables, blade inlet and outlet angles, are introduced to enhance a blower performance. General analysis code, ANSYS-CFX13, is employed to analyze internal flow and a blower performance. SST turbulence model is employed to estimate the eddy viscosity. Throughout the shape optimization of an impeller at the design flow condition, the blower efficiency and pressure are successfully increased by 4.7 and 1.02 percent compared to reference one. It is noted that separated flow observed near cut-off region can be reduced by optimal design of blade angles, which results in stable flow pattern in the blade passage and increase of a blower performance. The stable flow at the impeller also makes good effects at the outlet of a volute casing.
Keywords
Double-inlet centrifugal blower; Numerical simulation; Design optimization; Response surface method; Efficiency;
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Times Cited By KSCI : 7  (Citation Analysis)
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1 Frank P. Bleier, Fan Handbook and McGraw-Hill, 1998, pp. 7.1-7.16
2 Logan, E. Jr., Turbomachinery(Basic theory and applications), MARCEL DEKKER INC., New York, 1993, pp. 45-47.
3 C. M. Jang, and S. H. Yang, "Performance Analysis on the Design Variables of a Turbo Blower", Journal of Fluid Machinery, Vol. 14, No. 2, 2011, pp. 47-51.   DOI   ScienceOn
4 J. H. Kim, K. H. Cha, K. Y. Kim, and C. M. Jang, "Numerical Investigation on Aerodynamic Performance of a Centrifugal Fan with Splitter Blades", International Journal of Fluid Machinery and Systems, Vol. 5, No. 4, 2012, pp. 168-173.   과학기술학회마을   DOI   ScienceOn
5 C. M. Jang, "Optimal Operation of Turbo Blowers Serially Connected Using Inlet Vanes", Proceedings of 3rd Asian Workshop on Thermophysics and Fluid Science, 2010, pp. 98-103.
6 J. Y. Park, M. R. Park, S. C. Hwang, and K. Y. Ahn, "Effects of Impeller Blade Thickness on Performance of a Turbo Blower", Journal of Fluid Machinery, Vol. 13, No. 4, 2010, pp. 5-10.
7 J. W. Kim, and E. Y. Ahn, "A Study on the Performance of Centrifugal Blower by Blades Charactristics", Journal of Fluid Machinery, Vol. 7, No. 5, 2004, pp. 13-19.   DOI
8 J. S. Lee, and C. M. Jang, "Evaluation of Inflow Uniformity on the Performance of Double-Inlet Centrifugal Blower Using Optimal Design Method", Journal of Trans. of Korean Hydrogen and New Energy Society, Vol. 24, No. 4, 2013, pp. 326-333.   과학기술학회마을   DOI   ScienceOn
9 J. S. Lee, and C. M. Jang, "Performance Characteristics of the Double-Inlet Centrifugal Blower according to the Shape of an Impeller", Journal of Fluid Machinery, to be published.
10 S. H. Kang, and Y. J. Kim, "Effects of the Impeller Inlet Tip Clearance on the Flow and Performance of Airfoil Fans", Trans. Korean Soc. Mech. Eng. B, Vol. 23, No. 8, 1999, pp. 957-968.
11 Cory, W. T. W., Fan and Ventilation a Practical Guide, Roles and Associates Ltd., New York, 2005, pp. 22-26.
12 CFX-13 User Manual, 2010, Ansys inc.
13 F. R. Menter, "Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications," AIAA Journal, Vol. 32, No. 8, 1994, pp. 1598-1605.   DOI   ScienceOn
14 J. S. Lee, and C. M. Jang, "Evaluation of Numerical Methods for Analyzing an Industrial Centrifugal Blower," Trans. of Korean Hydrogen and New Energy Society, 2012, Vol. 123, No. 6, pp. 688-695.
15 R. H. Myers, and D. C. Montgomery, "Response Surface Methodology: Process and Product Optimization Using Designed Experiments", 1995, John Wiley & Sons, New York.