Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Three Component Velocity Field Measurements of Turbulent Wake behind a Marine Propeller Using a Stereoscopic PIV Technique

Stereoscopic PIV 기법을 이용한 선박용 프로펠러 후류의 3차원 속도장 측정

  • 이상준 (포항공과대학교 기계공학과) ;
  • 백부근 (포항공과대학교 대학원 기계공학과) ;
  • 윤정환 (두산중공업)
  • Published : 2003.12.01
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Abstract

A stereoscopic PIV(Particle Image Velocimetry) technique was employed to measure the 3 dimensional flow structure of turbulent wake behind a marine propeller with 5 blades. The out-of-plane velocity component was determined using two CCD cameras with the angular displacement configuration. Four hundred instantaneous velocity fields were measured for each of four different blade phases and ensemble averaged to investigate the spatial evolution of the propeller wake in the near-wake region from the trailing edge to one propeller diameter(D) downstream. The phase-averaged velocity fields show the potential wake and the viscous wake developed along the blade surfaces. Tip vortices were generated periodically and the slipstream contraction occurs in the near-wake region. The out-of-plane velocity component and strain rate have large values at the locations of tip and trailing vortices. As the flow goes downstream, the turbulence intensity, the strength of tip vortices and the magnitude of out-of-plane velocity component at trailing vortices are decreased due to viscous dissipation, turbulence diffusion and blade-to-blade interaction.

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References

  1. Cho, C.H. and Lee, C.S., 2000, 'Numerical Experimentation of a 2-D B-Spline Higher Order Panel Method,' J. Soc. Naval Architects of Korea, Vol.37, No.3, pp.27-36
  2. Stella, A., Guj, G., Di, Felice F. and Elefante, M., 1998, 'Propeller Wake Evolution Analysis by LDV,' Proc. the 22nd Symp. Naval Hydrodynamics. p.171
  3. Chesnaks, C. and Jessup, S., 1998, 'Experimental Characterisation of Propeller Tip Flow,' Proc. 22nd Symp. Naval Hydrodynamics, Washington D.C., pp.156-169
  4. Cotroni, A., Di, Felice, F., Romano, G.P. and Elefante, M., 2000, 'Investigation of the Near Wake of a Propeller Using Particle Image Velocimetry,' Exp. in Fluids, Vol.29, pp.S227-236 https://doi.org/10.1007/s003480070025
  5. Paik, B.G. and Lee, S.J., 2002, 'Velocity Field Measurements of Propeller Wake Using a Phase-averaged PTV Technique,' J. Soc. Naval Architects of Korea, Vol.39, No.3, pp. 41-47 https://doi.org/10.3744/SNAK.2002.39.3.041
  6. Prasad, A. K. and Adrian, R. J., 1993, 'Stereoscopic Particle Image Velocimetry Applied to Liquid Flows,' Exp. in Fluids, Vol.15, pp.49-60 https://doi.org/10.1007/BF00195595
  7. Soloff, S. M., Adrian, R. J. and Liu, Z-C, 1997, 'Distortion Compensation for Generalized Stereoscopic Particle Image Velocimetry,' Meas. Sci. Technol., Vol.8, No.12, pp.1441-1454 https://doi.org/10.1088/0957-0233/8/12/008
  8. Calcagno, G., Di Felice, F., Felli, M. and Pereira, F., 2002, 'Propeller Wake Analysis behind a Ship by Stereo PIV,' Proc. 24th Symp. Naval Hydrodynamics, Fukuoka, pp.112-127
  9. Yoon, J.H. and Lee, S.J., 2002, 'Development of Stereoscopic PIV Measurement Technique and Its Application to Wake behind an Axial Fan,' J. KSME B, Vol.26, No.2, pp.362-373 https://doi.org/10.3795/KSME-B.2002.26.2.362