固定/浮式结构贯通类湍流场数值模拟  

Numerical simulation of fixed/floating structure through-type turbulence flow field

作　　者：吴家俊 李廷秋[1] 王子平 陈令福 WU Jiajun;LI Tingqiu;WANG Ziping;CHEN Lingfu(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,湖北武汉430063

出　　处：《中国舰船研究》2022年第3期112-118,134,共8页Chinese Journal of Ship Research

基　　金：国家自然科学基金重点国际合作研究项目资助(51720105011);工信部高技术船舶科研项目资助(工信部装函[2019]357号);交通运输部长江航务管理局重点项目资助(SXHXGZ-2021-3);国家部委基金资助项目;基础加强计划重点基础研究项目资助(K10502-150-010-01)。

摘　　要：[目的]为揭示固定、浮式结构贯通类局部高度湍流、碎波与流体分离等机理,以3类典型主动/被动式开孔结构物(即喷涌型浮式防波堤、静水受迫横摇运动下破舱模型、国际标准模型DTMB 5415破损船舶)为对象研究贯通类流动与运动耦合/非耦合问题。[方法]引入体积力技术,采用基于非定常、不可压缩流Navier-Stokes方程的动态重叠网格法,结合k-ε湍流模型,建立波浪喷涌型浮式防波堤进出水流动计算模型、静水受迫横摇运动下破损空舱进水瞬态与稳态晃荡计算模型、波浪破损船舶非线性运动预报模型。开展主动/被动式开孔固定、浮式结构贯通类湍流场数值模拟。[结果]结果表明,计算模拟的舱室进水水位、破损船横摇运动响应与相关试验数据吻合,验证了典型开孔贯通类流动与运动耦合/非耦合计算模型的可行性与精度。[结论]所完成的对不同结构贯通类湍流场的数值模拟,可为破损船舶安全航行与生存能力评估以及喷涌型防波堤的发展提供新的技术支撑。[Objectives]In order to reveal the mechanism of perforated fixed and floating structure throughtype flow fields in local high turbulence, breaking waves and fluid separation, three types of typical active/passive perforated structures(gushing floating breakwater, forced rolling flooded compartment in calm water and international standard model DTMB 5415 damaged ship) are used to study the coupled/uncoupled problem of through-type flow field and motion in perforated structures. [Methods]Volume force technology is introduced, the dynamic overset grid method based on the unsteady and incompressible Navier-Stokes equation is adopted, and the k-ε turbulence model is combined to establish a calculation model of the gushing floating breakwater inflow and outflow in waves, and a calculation model of the transient inflow and steadystate sloshing of a forced rolling empty flooded compartment in calm water and a prediction model of nonlinear damaged ship motion in waves. The numerical simulation of active/passive perforated fixed and floating structure through-type turbulent flow fields is carried out. [Results]The results show that the simulated rolling, flooded compartment wave elevations and rolling motion response of a damaged ship are consistent with the relevant experimental data, which verifies the feasibility and accuracy of typical perforated structure through-type flow and motion coupled/uncoupled calculation models. [Conclusions] The numerical simulation of the through-type turbulent flow fields of different structures provides new technical support for the safe navigation and survivability assessment of damaged ships, and the development of gushing breakwater.

关 键 词：贯通类湍流场 受迫横摇运动破舱进水 液舱晃荡 体积力再现喷涌效应技术 数值模拟 

分 类 号：U661.1[交通运输工程—船舶及航道工程]