대형 공동 수조에서의 변동 압력 계측

Measurement of Cavitation-Induced Pressure Fluctuation in a Large Cavitation Tunnel

  • Na, Yun-Cheol (Samsung Heavy Industries, Samsung Ship Model Basin) ;
  • Kang, Kwan-Hyoung (Samsung Heavy Industries, Samsung Ship Model Basin) ;
  • Kim, Young-Gi (Samsung Heavy Industries, Samsung Ship Model Basin) ;
  • Lee, Mu-Yeol (Samsung Heavy Industries, Samsung Ship Model Basin)
  • 발행 : 2000.06.22

초록

The cavitation-induced fluctuating pressure of the container ship named "Sydney Express" is measured in Samsung Large Cavitation Tunnel(SCAT). In the measurements, a complete ship model is employed. The effects of thrust coefficient and cavitation number on cavity pattern and cavitation-induced fluctuating pressure were investigated experimentally. It is demonstrated that the fluctuating pressure coefficient is very sensitive to the cavitation number. The results of cavitation and pressure fluctuations are compared with those of ITTC and HSVA, which shows fairly good agreement. It is exhibited that the removal of rudder can significantly change the loading condition of a propeller, and can reduce the fluctuating pressure coefficient almost by half.

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