The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
권호 표지
DOI QR코드

DOI QR Code

Performance Characteristics of the Double-Inlet Centrifugal Blower according to the Shape of an Impeller

임펠러 형상에 따른 양흡입 원심송풍기 성능특성

  • Received : 2013.12.05
  • Accepted : 2013.12.20
  • Published : 2014.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents the performance enhancement of a double-inlet centrifugal blower by the shape optimization of an impeller. Two design variables, a number of blade and a length of chord, are introduced, and analyzed by a response surface method. Three-dimensional compressible Navier-Stokes equations are used to analyze the blower performance and the internal flow of the blower. Throughout the numerical simulation of the blower, blower efficiency can be increased by reducing separation flow generating from the blade leading edge of a blade pressure surface. It is noted that recirculation flow observed inside the blade passage induces low velocity region, thus increases pressure loss. Efficiency and pressure of the optimum blower are successfully increased up to 3% and 3.9% compared to those of reference blower at the design flow condition, respectively. Detailed flow field inside the blower is also analyzed and compared.

Keywords

References

  1. Frank P. Bleier, 1998, Fan Handbook, McGraw-Hill, pp. 7.1-7.16
  2. Park, J.-Y., Park, M-R., Hwang, S-C and Ahn, K-Y., 2010, "Effects of Impeller Blade Thickness on Performance of a Turbo Blower," Journal of Fluid Machinery, Vol. 13, No. 4, pp. 5-10.
  3. Jang, C.-M. and Yang, S-H., 2011, "Performance Analysis on the Design Variables of a Turbo Blower," Journal of Fluid Machinery, Vol. 14, No. 2, pp. 47-51. https://doi.org/10.5293/KFMA.2011.14.2.047
  4. Kim, J.-H., Cha, K.-H. Kim, K.-Y and Jang, C.-M., 2012, "Numerical Investigation on Aerodynamic Performance of a Centrifugal Fan with Splitter Blades," International Journal of Fluid Machinery and Systems, Vol. 5, No. 4, pp. 168-173. https://doi.org/10.5293/IJFMS.2012.5.4.168
  5. Jang, C.-M., 2010, "Optimal Operation of Turbo Blowers Serially Connected Using Inlet Vanes," Proceedings of 3rd Asian Workshop on Thermophysics and Fluid Science, pp. 98-103.
  6. Myers, R.-H., and Montgomery, D.-C., 1995, "Response Surface Methodology: Process and Product Optimization Using Designed Experiments," John Wiley & Sons, New York.
  7. Lee, J.-S., and Jang, C.-M., 2013, "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, pp. 326-333. https://doi.org/10.7316/KHNES.2013.24.4.326
  8. CFX-13 User Manual, 2010, Ansys inc.
  9. Menter, F. R., 1994, "Two-Equation Eddy-ViscosityTurbulence Models for Engineering Applications," AIAAJournal, Vol. 32, No. 8, pp. 1598-1605. https://doi.org/10.2514/3.12149

Cited by

  1. Performance Enhancement of Dual-Inlet Centrifugal Blower by Optimal Design of Splitter vol.38, pp.12, 2014, https://doi.org/10.3795/KSME-B.2014.38.12.1065
  2. Application of Airfoil Impeller for Enhancement of Aerodynamic Performance of High Speed Centrifugal Fan vol.40, pp.5, 2016, https://doi.org/10.3795/KSME-B.2016.40.5.321
  3. 2014년 송풍기 및 환기시스템 분야 연구동향 vol.18, pp.2, 2014, https://doi.org/10.5293/kfma.2015.18.2.073
  4. 공기흐름 변경으로 임펠러의 수명연장과 전력비 절감을 위한 송풍기 개발을 위한 수치해석 vol.21, pp.12, 2020, https://doi.org/10.5762/kais.2020.21.12.192