假底对浅水船模直航阻力影响的数值计算  

Numerical Calulation on Influence of False Bottom on Resistance of Direct Shallow Water Navigation

作　　者：李志远 秦辉 韩琨羽 LI Zhiyuan;QIN Hui;HAN Kunyu(Qingdao SunRui Marine Environment Engineering Co.,Ltd.,Qingdao 266000,Shandong,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430000,China)

机构地区：[1]青岛双瑞海洋环境工程有限公司,青岛266000 [2]武汉理工大学船海与能源动力工程学院,武汉430000

出　　处：《船舶工程》2022年第11期43-48,共6页Ship Engineering

基　　金：国家自然科学基金项目(51809122,52101359);江苏省自然科学基金资助项目(BK20191461,BK20190966);江苏省高等学校自然科学研究面上项目(20KJB510046)。

摘　　要：拖曳水池开展浅水试验时,常采用假底设备代替真实水底,通过调节假底高度来模拟水深变化。因实际水池安装假底与边壁有间隙会引起附近流场变化,进而影响试验结果。第29届ITTC操纵委员会对此问题展开了专门讨论。通过求解RANS方程,数值模拟带有假底设备的KVLCC2船体直航运动的黏性流场,数值分析不同水深下假底与池壁间隙大小对船舶阻力试验的影响。When the shallow water test is carried out in the towed pool,the false bottom equipment is often used instead of the real bottom,and the change of water depth is simulated by adjusting the false bottom height.Due to the gap between the false bottom and the side wall of the actual pool,the flow field in the vicinity would change,thus affecting the experimental results.The 29th ITTC control committee has a special discussion on the issue.The viscous flow around a KVLCC2 in the oblique motion with false bottom equipment is simulated by solving the RANS equation.Under different water depths,the influence of the gap between hull and false bottom on hydrodynamic force is analyzed.

关 键 词：浅水 假底设备 船舶阻力 CFD方法 

分 类 号：U661.33[交通运输工程—船舶及航道工程]