Commenced in January 2007
Paper Count: 31824
Flow Characteristics Impeller Change of an Axial Turbo Fan
Abstract:In this paper, three dimensional flow characteristic was presented by a revision of an impeller of an axial turbo fan for improving the airflow rate and the static pressure. TO consider an incompressible steady three-dimensional flow, the RANS equations are used as the governing equations, and the standard k-ε turbulence model is chosen. The pitch angles of 44°, 54°, 59°, and 64° are implemented for the numerical model. The numerical results show that airflow rates of each pitch angle are 1,175 CMH, 1,270 CMH, 1,340 CMH, and 800 CMH, respectively. The difference of the static pressure at impeller inlet and outlet are 120 Pa, 214 Pa, 242 Pa, and 60 Pa according to respective pitch angles. It means that the 59° of the impeller pitch angle is optimal to improve the airflow rate and the static pressure.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1072798Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2557
 Railly, J. W., 1984, Computational Methods in Turbomachinery, Mechanical Engineering Publications, London.
 Kim, K. Y., Kim, J. Y., and Chung, J. Y., 1997, Three-dimensional analysis of the flow through an axial-flow fan, Journal of KSME, Vol. 21, No. 4, pp. 541-542.
 Hur, N. K., Kim, U., Kang, S. H., 1999, A numerical study on cross flow fan : effect of blade shapes on fan performance, Journal of. KFMA, Vol. 2, No.1, pp. 96-102.
 Jorjensen, R., 1976, Fan engineering, Buffalo, New York, pp. 217-222.
 Lakshminarayana, 1996, "Fluid dynamics and heat transfer of turbomachinery", Wiley. Interscience, pp.358-362.
 Ryu, I. K., 2003, Studies on the airflow characteristics with revision of impeller design and the noise characteristics with arrangement of silencer in an axial turbo fan, Hanyang University, Seoul, Korea.
 Hirsch, C., 1988, "Numerical computation of internal and external flows", Vol. 1, Wiley.
 Patankar, S. V., 1980, Numerical heat transfer and fluid flow, McGraw-Hill, New York