T型管冷热流体混合模化方法及数值模拟验证  

Modeling and numerical simulation of cold and hot fluid mixing in a T⁃junction

作　　者：高清 周书华 高汉武 卢涛[1] 陈学 罗彦 GAO Qing;ZHOU ShuHua;GAO HanWu;LU Tao;CHEN Xue;LUO Yan(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《北京化工大学学报(自然科学版)》2025年第1期93-102,共10页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：实际工程中的T型管道尺寸大、参数条件严苛,若要对其进行试验研究,所需投入较高,因此有必要对工程实际工况进行模化。采用动量比一致作为主要的相似准则,以高温导热油作为介质,建立了垂直布置的T型管道模型,保证原型与模型在温差、速度比、管径比上的热相似性。运用大涡模拟(LES)对原型及模型进行数值模拟验证,比较二者在温度、速度的时间分布上的相似性,结果表明原型及模型T型管内流场及温度场具有一定的相似性,利用导热油作为介质并采用动量比相似进行T型管冷热流体混合模化具有可行性。In practical engineering,a T-junction has large size and strict parameter conditions,so it is necessary to model the actual working conditions in order to conduct experimental research.A vertical T-junction model was established with the momentum ratio as the main similarity criterion and high temperature heat-conducting oil as the medium to ensure the thermal similarity between the prototype and the model in terms of temperature differ-ence,velocity ratio and diameter ratio.Large Eddy Simulation was used to validate the prototype and the model,and the time distributions of temperature and velocity were compared.The results show that the flow field and tem-perature field of the prototype and model T-junction are similar,and it is therefore feasible to use heat transfer oil as the medium and the momentum ratio similarity to model the mixed cold and hot fluids in a T-junction.

关 键 词：T型管 数值模拟 模化 导热油 

分 类 号：TL334[核科学技术—核技术及应用]