航速对水下回转体首部流场脉动特征影响的数值分析
Investigation of Influence of Inflow Condition on Underwater Rotating Bodies Using Wall-Modeled Large Eddy Simulation
孟欣欣 1周福昌 2曹留帅 1万德成1
作者信息
- 1. 上海交通大学船海计算水动力学研究中心(CMHL),船舶海洋与建筑工程学院,上海 200240
- 2. 武汉第二船舶设计研究所,武汉 430205
- 折叠
摘要
针对水下回转体近壁面流动和脉动压力开展研究.首先综述了水下回转体近壁面数值模拟方法的研究现状,然后采用壁面模化大涡模拟方法模拟不同来流速度下水下回转体近壁面的湍流特性和壁面脉动压力,对涡结构、轴向速度和脉动压力等进行分析比较,并研究回转体首部湍流特性,最后探究不同入流条件对首部边界层内流动影响的机理.
Abstract
This study explores research methods for near-wall flow and pulsating pressure of underwater rotating bodies.First,the current state of research on numerical simulation methods for the near-wall flow of underwater rotating bodies is reviewed.Then,the wall-modeled large eddy simulation(WMLES)method is employed to simulate the near-wall turbulent characteristics and wall pressure fluctuations of underwater rotating bodies under different inflow velocities and inflow turbulence intensities.Turbulent kinetic energy,forces,axial velocity,and pulsating pressure are analyzed,along with the investigation of fluctuations in the turbulent flow at the bow of the rotating body.Finally,the mechanism of the influence of the inflow condition on the flow within the bow boundary layer is explored.
关键词
水下回转体/壁面模化大涡模拟/湍流动能/壁面脉动压力Key words
underwater rotating body/wall-model large eddy simulation/turbulent kinetic energy/wall pressure fluctuations引用本文复制引用
出版年
2024
NETL
NSTL
万方数据