热力发电2016，Vol.45Issue(7)：21-26,6.DOI:10.3969/j.issn.1002-3364.2016.07.021
基于耦合物理场的锅炉管道传热及阻力特性研究
Heat transfer and resistance characteristics of pipes in boiler based on coupled physical field
摘要
Abstract
To enhance the heat transfer efficiency of boiler tubes,the temperature field and thermal stress distribution was numerically simulated for the double layer pipe by using ANSYS software,on the basis of the coupled physical field.In addition,to accurately describe the water flow resistance characteristics,the rubber plug inside the boiler tube was taken as the research obj ect to establish a two dimensional model for the boiler tube and the rubber plug.Then,combing the nonlinear structure with fluid mechanics,the fluid solid coupling analysis was performed for the boiler tube.The results show that,the stress change of the two-layer tube with different materials was smaller than that of the single-layer tube with the same materi-al,and the temperature distribution was in accordance with the heat transfer law.The rubber plug located at the fluid solid coupled region,and the flow field distribution around it agreed well with the regularity of fluid motion,the stress and displacement changes conformed to the structure analysis of the regularity. This result provides a reference for the optimization design of the rubber plug and can improve the heat transfer efficiency of the boiler.关键词
锅炉/管道/传热特性/温度分布/橡胶塞子/阻力特性/耦合物理场Key words
boiler/tube/heat transfer performance/temperature distribution/rubber plug/resistance charac-teristics/coupled physical field分类
能源科技引用本文复制引用
程友良,薛占璞,李占岭,王晓冬,贺忠..基于耦合物理场的锅炉管道传热及阻力特性研究[J].热力发电,2016,45(7):21-26,6.基金项目
国家自然科学基金项目(10672056) （10672056）
