International Journal of Fluid Machinery and Systems

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

DOI QR Code

Influence of Blade Row Distance on Performance and Flow Condition of Contra-Rotating Small-Sized Axial Fan

  • Shigemitsu, Toru (Institute of Technology and Science, The University of Tokushima) ;
  • Fukutomi, Junichiro (Institute of Technology and Science, The University of Tokushima) ;
  • Shimizu, Hiroki (Graduate School of Advanced Technology and Science, The University of Tokushima)
  • Received : 2012.06.13
  • Accepted : 2012.08.20
  • Published : 2012.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Small-sized axial fans are used as air coolers for electric equipment. There is a strong demand for higher power of fans according to the increase of quantity of heat from electric devices. Therefore, higher rotational speed design is conducted, although, it causes the deterioration of the efficiency and the increase of noise. Then, the adoption of contra-rotating rotors for small-sized fans is proposed for the improvement of the performance. In the case of contra-rotating rotors, blade row distance between the front and the rear rotors influences on the performance and the noise. Therefore, it is important to clarify the optimum blade row distance between front and rear rotors. The performance curves of the contra-rotating small-sized axial fan under the condition of different blade row distances are shown and the blade row interaction between the front and the rear rotors are discussed by the numerical results. Furthermore, the optimum blade row distance of the contra-rotating small-sized axial fan is considered.

Keywords

References

  1. Miyahara, M and Fukano, T., 2006, "Fan Cooling Technology for Small Electronic Device," Turbomachinery(in Japanese), Vol. 34, No. 3, pp. 129-134.
  2. Furukawa, A., Shigemitsu, T and Watanabe, S., 2007, "Performance Test and Flow Measurement of Contra-Rotating Axial Flow Pump," J. Thermal Science, Vol. 16, No. 1, pp. 7-13. https://doi.org/10.1007/s11630-007-0007-4
  3. Furukawa, A., Cao, Y., Okuma, K and Watanabe, S., 2000, "Experimental Study of Pump Characteristics of Contra-Rotating Axial Flow Pump," Proc. 2nd Int. Symp. on Fluid Machinery and Fluid Eng., Beijing, 67-657, pp. 245-252.
  4. Kodama, Y., Hayashi, H., Fukano, T and Tanaka, K., 1994, "Experimental Study on the Characteristics of Fluid Dynamics and noise of a Counter-Rotating Fan(1st Report, Effects of the Supporter Shape of the Electric Motor and the Distance between Two Rotors on the Characteristics)," Trans. JSME (in Japanese), Vol. 60, No. 576, pp. 2764-2771.
  5. Shigemitsu, T., Furukawa, A., Okuma, K and Watanabe, S., 2002, "Experimental Study on Rear Rotor Design in Contra-Rotating Axial Flow Pump," Proc. 5th JSME/KSME Fluids Eng. Conf., Nagoya, (2002), pp. 1453-1548.
  6. Sanders, A, J., Papalia, J and Fleeter, S., 2002, "Multi-Blade Row Interactions in a Transonic Axial Compressor: Part I- Stator Particle Image Velocimetry (PIV) Investigation," ASME J. Turbomachinery, Vol. 124, No. 1, pp. 10-18. https://doi.org/10.1115/1.1411973
  7. Shigemitsu, T., Fukutomi, J and Okabe, Y., 2010, "Performance and Flow Condition of Small-Sized Axial Fan and Adoption of Contra-Rotating Rotors," J. Thermal Science., Vol. 19, No. 1, pp. 1-6. https://doi.org/10.1007/s11630-010-0001-0
  8. Ito, T., Minorikawa, G., Nagamatsu, A and Suzuki, S., 2006, "Experimental Research for Performance and Noise of Small Axial Flow Fan(influence of Parameter of Blade)," Trans. JSME (in Japanese), Vol. 72, No. 715, pp. 670-677. https://doi.org/10.1299/kikaib.72.670

Cited by

  1. Internal Flow Condition of High Power Contra-Rotating Small-Sized Axial Fan vol.6, pp.1, 2013, https://doi.org/10.5293/IJFMS.2013.6.1.025
  2. Unsteady Flow Condition between Front and Rear Rotor of Contra-Rotating Small Sized Axial Fan vol.07, pp.03, 2017, https://doi.org/10.4236/ojfd.2017.73025
  3. The Acoustical Behavior of Contra-Rotating Fan vol.2018, pp.1563-5147, 2018, https://doi.org/10.1155/2018/3739067