CAJ | 학술논문

船舶外飘砰击是一个十分复杂的水动力问题，同时也是船舶设计人员十分关心的主要问题。论文采用基于简单Green函数的三维时域势流Rankine源法求解船体在不规则波中的运动问题，获得船与波浪的垂向相对运动速度，并通过比较分析选取合适的砰击压力系数，获得船体艏部外飘砰击压力，计算结果表明外飘砰击载荷对波高较为敏感，受波高的影响较大。通过与规范值比较分析，证明了本方法的合理性，对船体艏部外飘的设计具有一定的参考价值。
선박외표팽격시일개십분복잡적수동력문제，동시야시선박설계인원십분관심적주요문제。논문채용기우간단Green함수적삼유시역세류Rankine원법구해선체재불규칙파중적운동문제，획득선여파랑적수향상대운동속도，병통과비교분석선취합괄적팽격압력계수，획득선체수부외표팽격압력，계산결과표명외표팽격재하대파고교위민감，수파고적영향교대。통과여규범치비교분석，증명료본방법적합이성，대선체수부외표적설계구유일정적삼고개치。
Impact of wave to ship flare is a complex hydrodynamic problem deeply concerned by ship designer. In this paper, a 3-D Rankine panel method based on the simple Green function is used to solve the motion problem in random sea. Then the relative velocity between ship and waves in vertical direction is obtained and a proper slamming pressure coefficient is chosen. Through comparison and analysis the bow flare slamming pressure is obtained. The results show that the flare impact is sensitive to wave height and highly affected by wave height. By comparing the results with the values in classification society rules, the present method is proved to be reasonable and is useful for bow flare design.