气动热环境下大直径非金属高速圆盘的温度场分析

Analysis of Temperature Field of Large Diameter Non-metallic High-speed Disk in Aerodynamic Heating Environment

基于热分析的基本理论,通过气动加热工程算法确定了圆盘表面热流密度;根据实际情况,建立了气动热环境下大直径非金属圆盘的热模拟有限元模型,运用有限元分析软件Ansys对圆盘温度场进行了数值模拟。仿真结果表明,圆盘温度自圆盘发热区向中心递减;影响圆盘峰值温度的三个工艺参数中,圆盘转速影响最大;为了使圆盘温升合理,圆盘外径尺寸应控制在800 mm以内。

Based on the basic theory of thermal analysis and aerodynamic heating engineering algorithm,the thermo-simulation finite element model of the non-metallic disc in aerodynamic heating environment was established. With the finite element analysis software Ansys, the temperature field of the high speed and large diameter non-metallic disc was analyzed. The simulation results show that the heat decreases from heating zone to the disc center area;in the three process parameters on the peak temperature of the disk, the most important factor is disk rotation;in order to make the disc temperature reasonable,the disc external diameter size should be controlled within 800 mm.