横掠单管热量扩散特性的研究  

Study on Heat Diffusion Characteristics of Cross-flow Swept Single Tube

作　　者：刘金辉 刘升虎[1] 党瑞荣[1] LIU Jinhui;LIU Shenghu;DANG Ruirong(Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学陕西省油气井测控技术重点实验室,西安710065

出　　处：《西安文理学院学报(自然科学版)》2025年第1期79-84,共6页Journal of Xi’an University(Natural Science Edition)

基　　金：山东省泰山产业领军人才工程蓝色人才专项(鲁发改动能办[2021]1140号):“海上油水井智能安全控制装备及技术研究”

摘　　要：为了研究横掠单管的热量扩散效应,本文提出一种在横掠单管上采用恒功率加热的方法,通过分析流体流动带走热量的变化规律,研究热量随管内流速的变化关系.这种管内对流传热现象的发生可以检测管流中单相流的表观流速.首先,设计了管道的几何尺寸,并利用COMSOL软件进行数值模拟计算,发现管流内部在层流状态下的流速分布不均匀.随后,通过模拟软件仿真得到了卡门涡街现象,说明横掠单管的直径对流型的影响较大.最后通过实验的方法,验证了横掠单管的加热温差与流速成一定比例的函数关系.通过上述这种对流换热现象的分析,可以将对流传热的灵感应用在以后的热式流量计中,也为今后利用热对流的方式测量多相流提供参考依据.To study the thermal diffusion effects in cross-flow single tube,a method involving constant power heating was proposed,which analyzes the variation of heat dissipation with changes in flow velocity in the tube,based on the heat carried away by the fluid flow.This convective heat transfer phenomenon within the tube can be used to detect the apparent velocity of single-phase flow.Firstly,the geometric dimensions of the tube are designed,and numerical simulations are conducted using COMSOL software.The the velocity distribution within the tube flow is found to be inconsistent under laminar flow states.Secondly,the simulation software produces a Kármán vortex street phenomenon,indicating that the diameter of the cross-flow single tube significantly affects the convection type.Finally,experimental methods confirmed a proportional functional relationship between the heating temperature difference and the flow velocity in the cross-flow single tube.This analysis of convective heat transfer phenomena can inspire future application in thermal flow meters and provide a reference for measuring multiphase flows using convective heat methods.

关 键 词：横掠单管 热量扩散 水平管流 恒功率 

分 类 号：TH865[机械工程—仪器科学与技术]