流体机械2024，Vol.52Issue(4)：36-41,6.DOI:10.3969/j.issn.1005-0329.2024.04.006
热边界阀门微小内漏时温度场计算方法研究
Study on calculation method of temperature field in case of slight internal leakage of thermal boundary valve
摘要
Abstract
In order to study the distribution of temperature field on outer wall of the pipe in case of internal leakage of the valve,valve models with four kinds of defects were artificially designed.Based on the flow,evaporation and condensation and heat transfer models in FLUENT software,valve fluid-heat-solid coupling simulation was carried out,and the distribution law of temperature field with internal leakage was obtained:there is thermal stratification axial and circumferential direction in the distribution of temperature field;With the increase of internal leakage,the downstream temperature field of the valve increases as a whole.Circumferential thermal stratification tends to be flat at 2 times pipe diameter,which can be used as a monitoring point for internal leakage in engineering.The experimental data of temperature field in case of internal leakage and numerical simulation data were compared,and the deviation of temperature field falls within the allowable range for engineering,which verifies that the calculation method can be used for on-line monitoring and detection of thermal boundary valves in engineering practice.关键词
边界阀门/内泄漏/热-流-固耦合/数值模拟Key words
boundary valve/internal leakage/heat-fluid-solid coupling/numerical simulation分类
机械制造引用本文复制引用
李元姣,苗碧琪,何巍,蒋庆磊,杨垦..热边界阀门微小内漏时温度场计算方法研究[J].流体机械,2024,52(4):36-41,6.基金项目
国家发改委攻关项目(20200389) （20200389）
