Journal of Mechanical Science and Technology

  • 제17권1호
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  • Pages.114-121
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  • 2003
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  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Development of a Water Droplet Erosion Model for Large Steam Turbine Blades

  • Lee, Byeong-Eun (Department of Aeronautical Engineering, Korea Aviation Polytechnic College) ;
  • Riu, Kap-Jong (School of Mechanical Engineering, College of Engineering, Kyungpook National University) ;
  • Shin, Se-Hyun (School of Mechanical Engineering, College of Engineering, Kyungpook National University) ;
  • Kwon, Soon-Bum (School of Mechanical Engineering, College of Engineering, Kyungpook National University)
  • 발행 : 2003.01.01
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초록

Water droplet erosion is one of major concerns in the design of modern large fossil steam turbines because it causes serious operational problems such as performance degradation and reduction of service life. A new erosion model has been developed in the present study for the prediction of water droplet erosion of rotor blades operated in wet steam conditions. The major four erosion parameter : impact velocity, impacting droplet flow rate, droplet size and hardness of target are involved in the model so that it can also be used for engineering purpose at the design stage of rotor blades. Comparison of the predicted erosion rate with the measured data obtained from the practical steam turbine operated for more than 90,000 hours shows good agreement.

키워드

참고문헌

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