气浮箱型结构在有限水深中的波浪力研究  

Wave forces for air-floating rectangular box in finite water depth

作　　者：周建忠[1] 刘宪庆[2] 

机构地区：[1]后勤工程学院军事供油工程系,重庆401311 [2]后勤工程学院军事工程管理系,重庆401311

出　　处：《水运工程》2015年第6期17-21,25,共6页Port & Waterway Engineering

基　　金：国家高技术研究发展计划资助项目(2012AA051705)

摘　　要：以箱型气浮结构为例,通过气体绝热方程考虑气体的压缩性对气-水交界面处的非线性边界条件进行推导,基于二维势流理论通过特征函数展开和匹配渐进法建立了结构波浪力求解的解析解,对不同水深宽度比、不同吃水情况下的波浪力的幅频变化规律进行讨论。结果表明:随着吃水的增加,结构的水平波浪力呈增加的趋势,结构的垂向波浪力和波浪力矩呈下降的趋势;随着水深的增加,结构的波浪力呈下降的趋势,垂向波浪力引起的波浪力矩变化比水平波浪力引起的波浪力矩变化明显。Taking an air-floating rectangular box for example, we deduce the nonlinear boundary condition of air-water interface at the structure bottom considering air compressibility through adiabatic equation. Based on the 2-D potential flow theory using the analytical solution of eigenfunction expansion and progressive matching method, we investigate the amplitude frequency of wave forces with different water depth-width ratios and different drafts. It is shown that the horizontal wave force increases with draft increasing, but the vertical wave force and the moment declines with the increase of the draft; Wave forces decrease with the increase of the water depth, and the change of wave moment caused by vertical wave forces is more obvious than that caused by horizontal wave forces.

关 键 词：气浮结构 特征函数 波浪力 箱型 

分 类 号：P752[天文地球—海洋科学]