Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Prediction of Plate Deformation Considering Film Boiling in Water Cooling Process after Line Heating

선상가열시 수냉이 유발하는 막비등 현상을 고려한 판의 변형 예측

  • Ha, Yun-Sok (Dept. of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Kim, Jung-Soo (Doosan Heavy Industries and Construction Co., LTD.) ;
  • Jang, Chang-Do (Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
  • Published : 2005.10.01
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Abstract

From a rapid cooling to a slow cooling in the actual cooling process in shipyards, the phase of steel becomes martensite, bainite, ferrite, and pearlite. In order to simulate the cooling process, heat transfer analysis was performed considering the effects of impinging water jet, film boiling, and radiation. From above simulation it is possible to find the cooling speed at the inherent strain region and volume percentage of all phases in that region. By the suggested method based on the precise material properties calculated from volume percentage of all phases, it will be possible to predict the plate deformations by line heating more precisely. It is verified by comparing with some experimental results that the present method is very effective and efficient.

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References

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