摘要
为了研究滑行艇喷溅现象,本文基于CFD软件FINE/MARINE开展了棱柱型滑行艇不同底部横向斜升角和不同航速下的数值模拟。将艇体表面的流体特征信息(速度场、压力场和水气体积分数等)导入自编程后处理程序,程序对艇体节点空间坐标重新生成非结构网格,给定喷溅的判断条件,自动识别和处理艇体喷溅区形状及喷溅阻力(包括喷溅摩擦阻力和喷溅压阻力)。研究结果表明:本文提出的喷溅处理方法可以较好地处理自由面破碎、飞溅等强非线性引起的高性能船舶阻力增量问题,为揭示高速滑行艇喷溅内部机理及防飞溅结构形式奠定基础。
To study the splash phenomenon in planing craft,in this study,we used the CFD software FINE/MARINE to perform numerical simulations of prismatic planing craft under different lateral deadrise angles at the bottom and different speeds.Into this self-programmed post-processing program,we imported fluidic characteristics information about the hull surface,including the velocity field,pressure field,and water phase volume fraction.This program regenerates unstructured grids for the space coordinates of the hull node and automatically determines the splashing conditions and identifies the shape of the hull splash zone and its spray resistance(including the friction and pressure resistances to splash).The results show that our proposed splash processing method can solve the resistance increment problem of high-performance ships,which is caused by strong nonlinearities such as a broken free surface and splash.Moreover,it lays a foundation for better understanding the internal mechanism and splash-proof structure of high-speed planing crafts.
作者
窦朋
王志东
凌宏杰
DOU Peng;WANG Zhidong;LING Hongjie(College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210000, China;College of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2018年第3期422-427,共6页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51279070)
江苏省高校自然科学研究重大基金项目(12KJA_580001)
关键词
计算流体力学
棱柱滑行艇
驻线
自编程
喷溅阻力
底部斜升角
CFD
prismatic planing craft
stagnation line
self-programming
splash resistance
deadrise angle
