湿表面积 meaning in English

wetted surface area
wettedsurfacearea

The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly , the research creates and solves the ship large amplitude motion equations . on the one hand , the actual calculation takes into account the coupling between the different motion modes , on the other hand , in the process of calculation of the ship hydrodynamic coefficient , it considers the influence of the nonlinear factor . the hydrodynamic coefficient used in the calculation of froude - krylov force , diffraction force and radiation force changes instantaneously following the draft , and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull
本文的研究分为二个部分：首先利用frank源汇法计算水动力系数，计算包括不同吃水时的附加质量和阻尼系数，吃水范围涵盖了船舶大幅度运动时所有可能的吃水；然后建立和求解船舶大幅度运动方程，在实际计算时一方面考虑了运动模态之间的耦合，另一方面在计算水动力时，考虑了非线性因素的影响。 froude - krylov力、辐射力、绕射力中的水动力系数随吃水瞬时变化，静浮力的计算精确到船体瞬时湿表面积，最后用四阶龙格?库塔方法在时域内求解船舶运动方程，并进行了载荷计算。