基于四面体网格的船舶静水力计算方法精度研究  

Research on Computation Accuracy of Ship Hydrostatic Calculation Method Based on Tetrahedral Mesh

作　　者：刘虓[1] 杨天悦 王宇帆 樊天慧[1] LIU Xiao;YANG Tianyue;WANG Yufan;FAN Tianhui(School of Civil and Transportation Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《船舶工程》2021年第6期44-48,共5页Ship Engineering

基　　金：国家自然科学基金(51709118)。

摘　　要：四面体方法非常适合分析多凸体(浮式海洋平台、子母船和半潜船等)结构的浮态问题,该方法已经在多个工程领域进行了应用,但是对其静水力计算方法的精度研究还未见报道。文章首先介绍了基于四面体网格的静水力计算方法,然后通过椭球算例研究了典型静水力参数的计算精度与单元尺寸的关系。算例选取了5种不同的单元边长,针对浮体的3个典型静水力参数,进行精度分析。试验结果表明,四面体算法的精度控制水平与Maxsurf大致相当,当单元边长取为主尺度最小值的5%时,该算法即可取得满意的精度。The tetrahedral method is very suitable for the analysis of floating state of multi convex structures(floating offshore platform,lighter aboard ship and semi-submerged ship,etc.)and has been applied in many engineering fields.However,there is no report on research of the accuracy of its hydrostatic calculation method.The hydrostatic calculation method based on tetrahedral mesh is introduced,and the relationship between the calculation accuracy of typical hydrostatic parameters and element sizes is studied by an ellipsoid example.5 different side lengths are selected in the example and the accuracy of 3 typical hydrostatic parameters of the floating body is analyzed.Experimental results show that the accuracy control level of tetrahedron algorithm is similar to that of Maxsurf.In addition,when takes 5% of the minimum value of the principal dimensions as the element side length,the algorithm can obtain satisfactory accuracy.

关 键 词：船舶 静水力 四面体 计算精度 

分 类 号：U661.2[交通运输工程—船舶及航道工程]