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김용직 ( Yong Jig Kim ),강일권 ( Il Kwon Kang ),함상준 ( Sang Jun Ham ),박치완 ( Chi Wan Park ) 한국어업기술학회 2015 수산해양기술연구 Vol.51 No.4
A tragic disaster happened by capsizing O-Ryong 501 trawler at Western Bering Sea in 1st, Dec. 2014. The disaster was caused by the severe weather and the long deferred escape from the storm in fully developed high sea. Lots of sea water from poop deck rushed into the fish ponder with fishes all together after hauling net and then remove the fishes from codend. The vessel became to incline to the one side caused by the weight and the free surface effect of flood sea waters and fishes at initial stage. In spite of crews all effort to discharge the waters, but the work was not achieved successfully. For the worse thing, the order of abandon ship was issued too late. After all, the ship capsized and sank, then almost crews became to the victims of the casualty including captain. In this paper, author carried out restrictively the calculation of dynamic factors influenced on the disaster including the weather condition and effects of the flood sea waters, and found out that the most important causes of the disaster were the decrease of stabilities, was decreased from 0.9m to 0.08 m, and the high waves which led to the vessel disaster.
고차 스펙트럴/경계요소법을 이용한 3차원 수치 파수조의 개발
김용직(Yong Jig Kim),이영우(Young Woo Lee),홍지훈(Ji Hoon Hong) 한국해양공학회 1999 韓國海洋工學會誌 Vol.13 No.1
In this paper, mathematical formulation of the high-order spectral/boundary-element method is shown. This method is one of the most efficient numerical methods by which the nonlinear gravity waves can be simulated in time-domain. Three-dimensional waves generated by a uniformly translating surface pressure are calculated and discussed. The obtained results are compared with others' results. The comparisons show good agreements.