空炉冷态和满装炉量下真空高压气淬过程流场与温度场数值模拟和实验研究  

Numerical simulation and experimental study on flow and temperature fields of vacuum high-pressure gas quenching furnace under empty and full loaded states

作　　者：王志坚[1] 尚晓峰[1] 

机构地区：[1]沈阳航空航天大学机电工程学院,辽宁沈阳110136

出　　处：《真空》2012年第1期83-86,共4页Vacuum

基　　金：沈阳市科技计划项目(F11-264-1-56);沈阳航空航天大学博士启动基金

摘　　要：本文采用标准的k-ε三维紊流模型,利用FLUENT软件对喷嘴型真空高压气淬炉中空炉冷态流场和工件满装炉量下气固耦合流动传热过程进行了数值模拟计算。建立了符合实际的控制方程和简化物理模型,对空炉冷态下炉内的气体流动特征点进行流速测量,通过实测值与计算机模拟结果进行对比,验证了流场模拟计算的准确性和适用性;预测了满炉状态下炉区内的气体流动和工件温度分布,实测了指定工件的冷却曲线,比模拟冷却时间慢,误差在10%以内。Based on the standard k-ε 3D turbulence model, the gas flow of empty and gas-solid coupling flow heat transfer of full loaded nozzle-type vacuum high-pressure gas quenching furnaces were simulated by the FLUENT software, respectively. Reasonable control equation and simplified physical model were established. The flow rate of feature points was measured under empty state. By comparison of the simulated and measured results, the accuracy and applicability of the flow simulation was verified. The gas flow and temperature distribution of full loaded furnace were predicted by simulation and the cooling curve of assigned workpiece was measured. The measured result is a little slower than the simulated one with the error less than 10%.

关 键 词：真空高压气淬 有限体积法 温度场 流场 冷却曲线 

分 类 号：TG155.1[金属学及工艺—热处理]