直角三通加热结构的多物理场耦合数值分析  

Numerical Analysis of Multiphysics Coupling of Right-angle Three-wayHeating Structure

作　　者：栾振辉[1] 陈涛 LUAN Zhenhui;CHEN Tao(School of Mechanical Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China)

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2021年第2期9-15,共7页Journal of Anhui University of Science and Technology:Natural Science

摘　　要：以盘式干燥机加热盘为研究对象,为了研究其内部流场、温度场及热应力分布情况,将加热盘简化为三通管结构,提出了流-固-热-力多耦合分析方法,建立有限元模型,联合有限元软件ABAQUS求解4种时间下(0s,30s,60s,90s)加热盘的流场、温度场以及热应力分布。结果表明模型内通入高温烟气,加热盘入口处温度最高,随着时间变化30s之后流体模型内高温烟气分布均匀,温度均匀;固体模型温度场随着时间变化,温度升高,热应力逐渐增大,90s时热应力最大,发生热应力集中现象。Taking the heating plate of the disc dryer as the research object,in order to study its internal flow field,temperature field,and thermal stress distribution,the heating plate is simplified to a three-way tube structure,and a fluid-solid-thermal-mechanical multi-coupling analysis method is proposed.The finite element model was established,and the finite element software ABAQUS was combined to solve the flow field,temperature and thermal stress distribution of the heating plate in 4 periods of time(0s,30s,60s,90s).The results show the followings.The temperature at the inlet of the heating plate is the highest when the high-temperature flue gas introduced into the model,and the high-temperature flue gas is well-distributed and the temperature is uniform in the fluid model after 30s The temperature field of the solid model changes with the time.The stress gradually increases with the increasing temperature,and the thermal stress is the largest after 90s with the thermal stress concentration.

关 键 词：加热盘 流固耦合 数值模拟 热应力 

分 类 号：U173.2[交通运输工程]