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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。
In this paper, a standard k-ε three-dimensional turbulence model was used to simulate the gas-solid coupling flow and heat transfer process in the nozzle-type vacuum high-pressure gas quenching furnace hollow furnace with the FLUENT software. A control equation and a simplified physical model are established to measure the flow characteristics of the gas flow in the furnace under cold condition. The accuracy and applicability of the flow field simulation are verified by comparing the measured data with the computer simulation results The gas flow and workpiece temperature distribution in the furnace area were predicted. The cooling curve of the specified workpiece was measured, which was slower than the simulated cooling time and the error was less than 10%.