【摘 要】
：
波浪条件下航行体高速入水的载荷特性是影响该类航行体总体方案及结构设计的关键因素.采用流体体积多相流模型和动网格技术建立高速入水数值模拟方法,通过试验验证计算方法的准确性和适用性,并分析入水角度和波浪参数等因素对高速入水轴向载荷的影响规律.结果表明:轴向冲击力系数峰值随着入水角度增大而增大,且与入水角的正切函数值呈线性关系;不同波浪相位改变了入水时刻航行体与自由面的实际夹角,90°、270°相位入水时轴向冲击载荷与静水面入水时差别不大,0°相位入水时轴向冲击载荷峰值最大且与静水面时相应入水角下的轴向冲击载荷
【机 构】
：
西北工业大学 航海学院,陕西 西安710072;北京机电工程研究所, 北京100074;西北工业大学 航海学院,陕西 西安710072;北京机电工程研究所, 北京100074
论文部分内容阅读
波浪条件下航行体高速入水的载荷特性是影响该类航行体总体方案及结构设计的关键因素.采用流体体积多相流模型和动网格技术建立高速入水数值模拟方法,通过试验验证计算方法的准确性和适用性,并分析入水角度和波浪参数等因素对高速入水轴向载荷的影响规律.结果表明:轴向冲击力系数峰值随着入水角度增大而增大,且与入水角的正切函数值呈线性关系;不同波浪相位改变了入水时刻航行体与自由面的实际夹角,90°、270°相位入水时轴向冲击载荷与静水面入水时差别不大,0°相位入水时轴向冲击载荷峰值最大且与静水面时相应入水角下的轴向冲击载荷基本一致,180°相位入水时轴向冲击载荷最小,但易发生跳弹现象导致入水失败;波浪环境下航行体的实际入水角应为入水点处波倾角与航行体姿态耦合值,其轴向力系数峰值可通过平静水面环境下入水冲击载荷峰值系数曲线插值获得.
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