CAJ | 학술논문

当船舶出现破损淹舱或者在波浪中做横摇运动时，船体都会出现横倾，这会使得船舶在水面下的湿表面与正浮时不再相同，船体周围的非定常流场因此会发生改变。本文基于三维线性势流理论，使用奇点分布法对具有不同横倾角的Wigley III船型的非定常扰动速度势展开计算，进而求解Wigley III船型水动力系数与波浪激励力。计算结果表明，横倾对垂荡、横摇、纵摇水动力系数的影响比较明显；在顶浪下，横倾对横向的波浪激励力影响显著。
당선박출현파손엄창혹자재파랑중주횡요운동시，선체도회출현횡경，저회사득선박재수면하적습표면여정부시불재상동，선체주위적비정상류장인차회발생개변。본문기우삼유선성세류이론，사용기점분포법대구유불동횡경각적Wigley III선형적비정상우동속도세전개계산，진이구해Wigley III선형수동력계수여파랑격려력。계산결과표명，횡경대수탕、횡요、종요수동력계수적영향비교명현；재정랑하，횡경대횡향적파랑격려력영향현저。
When ships are damaged or rolling in waves, ships will be heeling, whose wet surface will be different from the upright ones′and unsteady flow around will be changed. A Wigley III hull′s unsteady perturbation flow is calculated in different heeling angles using source distribution method based on 3 D potential flow theory, then its hydrodynamic coefficients and wave exciting forces are solved. Numerical result shows that heel has obvious effect on heave,roll,pitch hydrodynamic coefficients and influences lateral wave exciting forces greatly.