沥青混合料加热滚筒温度场仿真及质量分析  

Simulation on temperature field and analysis on quality of heating roller of asphalt mixture

作　　者：李旋[1] 马登成[1] 杨士敏[1] 

机构地区：[1]长安大学道路施工技术与装备教育部重点实验室,陕西西安710064

出　　处：《华中科技大学学报（自然科学版）》2014年第9期98-101,117,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(11202036);中央高校基本科研业务费专项资金资助项目(2013G1502059)

摘　　要：为了提高沥青混合料的加热效率与均匀性、降低能源消耗、提高路面就地热再生的施工质量,针对沥青路面养护车加热滚筒不同结构的螺旋叶片,利用Fluent仿真软件,通过数值模拟和分析,建立沥青混合料的流动及加热三维分析模型,采用混合模型、标准k-ε双方程模型、P1辐射模型的方法,研究不同螺旋角螺旋叶片对沥青混合料加热效率及加热均匀性的影响.研究结果表明:螺旋叶片的螺旋角对沥青混合料的加热效率以及加热均匀性影响较大,其中68°螺旋叶片加热效率最高、加热均匀性最好,为加热滚筒螺旋叶片的设计提供了借鉴.To improve the heating efficiency and uniformity of asphalt mixture,reduce energy consumption and improve the quality of asphalt pavement in place recycling,aimed at the heating roller of asphalt pavement maintenance equipment,the different structures of blade were designed.Through numerical simulation and analysis via Fluent,the 3Danalysis model of asphalt mixture were established.The mixture model,stand k-εmodel and P1 model were obtained in this simulation.The influence of the different helix angle of blade upon the heating efficiency and uniformity about asphalt mixture was discussed.Results show that the heating efficiency and uniformity of asphalt mixture are significantly different among distinct helix angles of blade.The heating efficiency and uniformity of asphalt mixture is the best when the helix angle of blade is 68°,which provides a reference for the designing blade of the heating roller.

关 键 词：道路施工 沥青混合料 加热效率 Fluent仿真 温度场 

分 类 号：U415.528[交通运输工程—道路与铁道工程]