摘要
为准确评估滑行艇在波浪中的运动特性、寻找运动规律,应用基于VOF RANS求解器的CFD方法对高速滑行艇在规则波浪中的迎浪运动进行数值计算。在纵摇和升沉两自由度模型下对滑行艇进行数值模拟,得到了滑行艇在迎浪运动中的无跳跃、规则跳跃和不规则跳跃3种运动形式。对3种运动形式发生的条件,即波长、波高和航速进行了研究,得到运动发生的条件区间,并分析了跳跃的发生对纵向运动幅度规律的影响。计算结果表明,规则跳跃和不规则跳跃的发生均会改变无量纲化纵向运动幅值随波高的变化规律。其中,不规则跳跃对滑行艇运动幅值的影响较规则运动更为强烈。
In order to estimate the hydrodynamic characteristics and laws of motions of the planing craft sailing in waves, using CFD method based on the VOF RANS solver to calculate the motions in head waves of high-speed planing craft. Three kinds of motions of the planing craft in head waves-no jump, regular jump and irregular jump are obtained by simulating in two degrees of freedom -pitch and heave motions. The criteria of motions -wave length, wave height and forward speed are discussed, and the effects of jump occurence on the amplitudes of longitudinal motions are studied. The calculation results show that both the regular jump and irregular jump have influences on the dimensionless amplitudes of longitudinal motions changing with wave height. The effects of the irregular jump on the amplitudes of the planing craft are stronger than the effects of the regular jump.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2014年第1期45-52,共8页
Journal of Harbin Engineering University
基金
国家自然科学基金资助项目(510090384)
关键词
CFD方法
高速滑行艇
纵向运动
规则波
迎浪运动
数值模拟
规则跳跃
不规则跳跃
CFD method
high-speed planing craft
longitudinal motion
regular waves
motion in head waves
numerical simulation
regular jump
irregular jump
