密度分层对近水面航行潜体兴波阻力影响分析  

Analysis of the effect of density-stratified flow on wave-making resistance of submerged bodies navigating near surface

作　　者：何广华 刘双 王威 潘雁甲 HE Guanghua;LIU Shuang;WANG Wei;PAN Yanjia(School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China;Shandong Institute of Shipbuilding Technology, Weihai 264209, China;School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology, Weihai 264209, China)

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001 [2]山东船舶技术研究院,山东威海264209 [3]哈尔滨工业大学(威海)船舶与海洋工程学院,山东威海264209

出　　处：《哈尔滨工程大学学报》2021年第8期1125-1132,共8页Journal of Harbin Engineering University

基　　金：山东省泰山学者工程专项经费资助项目(tsqn201909172);山东省高等学校青创科技支持计划(2019KJN003).

摘　　要：为研究密度分层流对潜体阻力及兴波的影响,本文基于RANS方程,采用Realizable k-ε湍流模型,结合欧拉多相流模型和自定义函数(UDF)方法建立了密度分层流中水下潜体航行特性分析的CFD模型。采用SUBOFF模型进行了网格及时间步长的收敛性验证,并将数值模拟结果与相关试验进行对比,验证了本数值方法的精确性;模拟了全附体潜体以不同航速航行于不同位置时的水动力特性,探讨了密度分层流中航速、潜深及潜体与内波交界面距离对潜体受力的影响。潜体的速度变化主要对潜体艏、艉及表面拐点处压力影响较大;而潜深的变化主要影响潜体主体部分的压力。本文给出了密度分层流中不同航行参数下潜体的受力特征,可为密度分层流中潜体水动力性能分析提供较好的参考。To study the effect of density-stratified flow on the wave-making resistance of submerged bodies,a computational fluid dynamics model analyzing the features of submerged bodies navigating in density-stratified flow is established based on the Reynolds-averaged Navier-Stokes equation by adopting the Realizable k-εturbulence model and by combining the Eulerian multiphase model and the user-defined functions.First,convergence verification of the grid and time step is conducted using the SUBOFF model,and the accuracy of the numerical method is validated by comparing the numerical modeling results with correlative tests.Thereafter,the hydrodynamic characteristics of submerged bodies with full appendages navigating at various positions and at different speeds are simulated by this method,and the effects of speeds,depths,and the distances between submerged bodies and the internal wave surface on the stress of the submerged bodies in the density-stratified flow are discussed.It is found that velocity variation of submerged bodies mainly affects the pressure at the bow,stern,and the turning points on the surface of them,while the change in depth mainly affects the pressure on their main parts.This study shows the stress characteristics of submerged bodies in density-stratified flow under various working conditions,which can provide a good reference for analysis of the hydrodynamic performance of submerged bodies in the density-stratified flow.

关 键 词：密度分层流 多相流 近水面 航速 航行位置 计算流体力学 阻力 潜体 

分 类 号：U661.1[交通运输工程—船舶及航道工程]