基于ANSYS Workbench的回转窑稳态热分析及窑皮厚度优化  

Steady-state Thermal Analysis for Rotary Kiln and the Coating Thickness Optimization with ANSYS Workbench

作　　者：高真[1] 熊禾根[1] 张文强[1] 

机构地区：[1]武汉科技大学,湖北武汉430081

出　　处：《机床与液压》2013年第13期132-135,共4页Machine Tool & Hydraulics

基　　金：国家科技支撑计划资助项目(2011BAB05B02)

摘　　要：基于ANSYS Workbench平台,运用Fluent软件模拟了某矿用回转窑燃烧火焰及其所产生高温气流的温度场分布;建立了回转窑的数值模型,并通过稳态热分析得出了回转窑窑体的温度分布云图,结果表明:窑外壁部分长度内温度超过了400℃,且沿窑长方向温差较大。为保证不因窑壁温度过高而影响托轮正常工作,且使得沿窑长方向窑壁温度尽量均匀,提出采用变窑皮厚度的结构改进措施;进一步通过模拟得出了较优化的窑皮厚度。对优化后的结构进行稳态热分析,结果表明,有效解决了上述问题。A simulation was conducted with combustion flame and the temperature distribution of its high-temperature airflow for a mine-used rotary kiln by using Fluent and ANSYS Workbench. Then, numerical model of the rotary kiln was established and steady- state thermal analysis was done to obtain the temperature contours of the kiln body. The results show that kiln outer wall temperature exceeds 400 ℃ within some length range and temperatures vary greatly along the kiln length direction. In order to avoid the backup roll deformation and make the temperature distribution uniform, a new rotary kiln structure in which coating thickness was changeable was put forward. Furthermore, coating thicknesses were optimized through simulation test. The results of steady-state thermal analysis for the improved structure show the problems mentioned above are solved very well.

关 键 词：回转窑 燃烧火焰 数值模型 窑皮 优化 

分 类 号：TF062[冶金工程—冶金物理化学]