沙体传热过程中耦合层及热流密度分析  

Analysis of the Coupling Layer and the Heat Flux in Heat Transfer Process

作　　者：张腾[1] 居来提买.提肉孜 胡小鑫 黄少君[1] 王越[1] 刘俊洋[1] 土逊阿依.艾买尔 

机构地区：[1]新疆大学机械工程学院,乌鲁木齐830047

出　　处：《科技通报》2016年第2期1-5,共5页Bulletin of Science and Technology

基　　金：国家自然科学基金资助项目(81160542)

摘　　要：以沙疗室为研究对象。双面定向加热沙体,对受热耦合层和热流密度曲线进行分析。利用计算机模拟技术,建立三维热物理模型。在Fluent软件中采用DO辐射模型,能量方程以及紊流模型。对比不同加热高度、不同加热时间下耦合层的变化。同时分析加热过程中热流密度变化规律。并进行实验加以验证。研究发现耦合层的宽度和垂直温度均匀性与加热高度、加热时间相关。通过热流密度曲线在"0区域"的形态可以解释耦合层的特点。Thermal coupling layer and heat flow density curve were analyzed when heating sand body on double sides in a particular direction.Computer simulation techniques was used to model three-dimensional thermal physical and we used DO radiation model, the energy equation and turbulent model in the Fluent software to compare changes of coupling layer under different time and heating height and we also analyzed the changing rule of heat flux in the course of heating process.We find that the width of the coupling layer and the distribution of vertical temperature were interrelated to heating height and heating time.We can explain the characteristics of the coupling layer after reading the shape of"0 zone"in flow density curves.

关 键 词：沙体传热 耦合层 热流密度 数值模拟 FLUENT 

分 类 号：O33[理学—一般力学与力学基础]