华中科技大学学报（自然科学版）Issue(6)：42-47,6.DOI:10.13245/j.hust.150609
穿浪双体船艏部分段模型入水砰击的数值仿真
Numerical simulation research on wet deck bow slam for large high speed catamarans
摘要
Abstract
Based on the commercial CFD software and combined with the overlapping grid technic ,the slam of 3‐D model of a catamarans stem was simulated .The validity and the veracity of this method were proved by the comparison of the test results and the slamming process images .And the mecha‐nism and the development process of the catamaran wet deck slamming were further researched .The result shows that the development of the slamming process is connected with the residual gas overflow underneath the subsection ,and the development time of the slamming process is very close to the time the gas underneath the cross structure overflow s .Further ,the ratio of the force caused by some non‐linear factors (such as the gas compression and the splash ) to the slamming pressure used to impede the object motion is stable along with the increase of the drop height .The acceleration peak reduces evidently after entering the water ,along with the increase of the subsection mass ,but when the sub‐section mass reaches a certain value ,the acceleration peak and the slamming pressure peak will be sta‐bilized and not affected by mass changes .关键词
计算流体力学/双体船/砰击/重叠网格/船体入水Key words
computational fluid dynamics/catamarans/slamming/overlapping grid/ship water-entry分类
交通工程引用本文复制引用
杨强,林壮,郭志群,马伟佳..穿浪双体船艏部分段模型入水砰击的数值仿真[J].华中科技大学学报（自然科学版）,2015,(6):42-47,6.基金项目
高等学校博士学科点专项科研基金资助项目（23132304120011）；黑龙江省自然科学基金资助项目（A201406）；哈尔滨工程大学多体船技术国家重点学科实验室开放基金资助项目（HEUDTC1409）；船舶预研支撑技术基金资助项目（13J1．5．1）． （）
