Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
권호 표지

Analysis of the Sir Flow due to the Number of Electric Fan Blades

선풍기의 날개 수에 따른 공기 유동해석

  • 조재웅 (공주대학교 기계자동차공학부) ;
  • 한문식 (계명대학교 기계자동차공학과)
  • Published : 2012.02.29
⟨ Previous Next ⟩

Abstract

Air flow and its pressure at electric fan according to three, four and five blades are analyzed in this study. As the number of blades increases at the same condition of specification, air tends to converge and becomes natural wind but higher power is consumed. And the velocity of wind is decreased as the space between winds becomes narrow. The turbulent flow is happened in the center of the body of revolution and the kinetic energy becomes largest in case of three blades. The pressure is decreased than atmospheric pressure from fan to outlet. As the number of blades increases, the pressure drop becomes smaller and is smallest in case of the fan with three blades. As the study result, The electric fan with three blades is thought to be effective in view of power consumption and design.

Keywords

References

  1. Ryu, K. J., Kim, Y. Y., Lee, K. S. and Cha, W. H., "Optimization of Shroud Shape and Fan Location for Increasing Exhaust Flow Rate of Air Conditioner Outdoor Unit", Transactions of the SAREK, Vol. 21, No. 11, pp. 599-605, 2009.
  2. Kim, D. K., Kim, C. H., Seo, S. H., Choi, D. H. and Oh, J. E., "A Study on the Noise Reduction of Axial Flow Fan by Experimental Method", 1993 spring conference Proceeding of the KSAE, pp. 178-184, 1993.
  3. Cho, J. U. and Han, M. S., "Study on Flow and Stress Analysis of Gas Turbine Blade", Journal of the KSMPE, Vol. 10, No. 3, pp. 67-72, 2011.
  4. Kim, J. H., Kim, T. S., Lee, Y. W. and Kim, Y. D., "A Study on Aerodynamic Analysis of HAWTs by CFD", Transactions of the WEIK, Vol. 9, No. 1, pp. 103-108, 2005.
  5. Cho, J. S., Han, S. H. and Kim, C. H., "A Study on the Design of a Fan-Sink Considering the Flow Fields Behind the Fan Outlet", Transactions of the KSME B, Vol. 26, No. 8, pp. 1055-1061, 2002. https://doi.org/10.3795/KSME-B.2002.26.8.1055
  6. Kim, J. Y. and Yang, S. H., "Numerical and Experimental Analysis of Tunnel Flow Induced by Jet Fan", Transactions of the KFMA, Vol. 13, No. 3, pp. 59-64, 2010.
  7. Swanson, J., "Ansys 11.0", Ansys. Inc., 2008.