CAJ | 학술논문

在海洋内孤立波作用下，立柱式钻井平台会产生大幅度的运动响应，影响钻井平台的作业效率与安全，其中平台内孤立波载荷的准确预测是关键。为此，以3类内孤立波理论（KdV、eKdV和MCC）的适用性条件为依据，通过构建两层流体中内孤立波对立柱式钻井平台强非线性作用的数值模拟方法，结合模型试验分析了立柱式钻井平台内孤立波载荷的尺度效应。结果表明，在大尺度条件下采用 Morison公式和傅汝德克雷洛夫公式分别计算内孤立波的水平力和垂向力仍然是可行的。此外，内孤立波载荷模型试验中，立柱式钻井平台内孤立波水平力及垂向力的尺度效应因流体黏性影响的不同而产生差异，受黏性影响较大的水平力尺度效应显著，而受黏性影响较弱的垂向力的尺度效应较弱，可以忽略。
재해양내고립파작용하，립주식찬정평태회산생대폭도적운동향응，영향찬정평태적작업효솔여안전，기중평태내고립파재하적준학예측시관건。위차，이3류내고립파이론（KdV、eKdV화MCC）적괄용성조건위의거，통과구건량층류체중내고립파대립주식찬정평태강비선성작용적수치모의방법，결합모형시험분석료립주식찬정평태내고립파재하적척도효응。결과표명，재대척도조건하채용 Morison공식화부여덕극뢰락부공식분별계산내고립파적수평력화수향력잉연시가행적。차외，내고립파재하모형시험중，립주식찬정평태내고립파수평력급수향력적척도효응인류체점성영향적불동이산생차이，수점성영향교대적수평력척도효응현저，이수점성영향교약적수향력적척도효응교약，가이홀략。
Under internal solitary ocean waves ,a cylindrical drilling platform would drift ,which could affect the efficiency and safety of operations on the platform ,so the accurate prediction of internal solitary wave load is critical .Based on the application conditions of the theories of three kinds of internal solitary waves (KdV ,eKdV and MCC) ,the scale effects of internal solitary wave load of a cylindrical drilling plat-form were analyzed through numerical simulation for the strong nonlinear action of internal solitary wave in a two-layer fluid ,and in model tests .The results showed that it was feasible to calculate horizontal and vertical forces of internal solitary waves in large scales by using the Morison formula and Froude-Krylov formula .In addition ,in the model experiments of internal solitary wave load demonstrated that scale effect differences existed between horizontal and vertical forces .The scale effect was less on the horizontal force compared with vertical one due to fluid viscosity influence difference .The viscosity effect on vertical force might be neglected .