管内冰浆在振动工况下的流动及传热特性  

Flow and heat transfer characteristics of ice crystals in polar vessel pipelines under vibration conditions

作　　者：布关印 陈海文[1,2] 徐立 黄静林[3] 李捷 BU Guanyin;CHEN Haiwen;XU Li;HUANG Jinglin;LI Jie(Ministry of Education, Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Wuhan 430063, China;School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China;Hubei Ocean Engineering Equipment Research Institute Co. , Ltd. , Wuhan 430063, China)

机构地区：[1]高性能船舶技术教育部重点实验室(武汉理工大学),湖北武汉430063 [2]武汉理工大学能源与动力工程学院,湖北武汉430063 [3]湖北省海洋工程装备研究院有限公司,湖北武汉430063

出　　处：《哈尔滨工程大学学报》2021年第9期1280-1286,共7页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51479152).

摘　　要：针对船舶在北极航道航行时管道内流体流动受到船舶机械振动的影响,本文采用计算流体力学(CFD)中的欧拉-欧拉模型、壁面函数模型,并通过UFD加载相间传质模型对水平管道中的冰晶进行数值模拟。研究振幅、频率、入口含冰率和速度对冰晶流动和传热特性的影响。结果显示:在振动工况下在流速改变时其压降增长趋势为二次函数增长趋势。振动频率及振幅增强管内扰动促进温度及相间传质率的升高。振动和振动频率的提高使最大体积的冰晶颗粒浓度减少,并且在40 Hz与50 Hz时出现冰晶在两侧聚集趋势。Due to the influence of the ship mechanical vibration on the pipeline flow in the Arctic channel,the Euler-Euler model,wall function model in computational fluid dynamics(CFD),and interphase mass transfer model loaded by CFD are used to perform numerical simulations on ice crystals in the horizontal pipeline.The effects of amplitude,frequency,inlet ice content,and velocity on the flow and heat transfer characteristics of ice crystals are studied.The results show that the increase in the pressure drop follows a quadratic trend when the velocity changes under vibration conditions.The frequency and amplitude of vibration strengthen the disturbances in pipelines and promote the increase of temperature and mass transfer rate.The increase of vibration and vibration frequency can reduce the concentration of ice particles with the largest volume,which tend to gather on both sides at 40 and 50 Hz.

关 键 词：冰晶 振动工况 流动特性 传热特性 弯管 数值模拟 两相流 传质传热模型 

分 类 号：U664.84[交通运输工程—船舶及航道工程]