A 10 cm (4 in.) round bar is quenched in 20 bar (290 psi), 20 m/s (100 ft/s) air in crossflow. The initial bar temperature is 1000 K (725 deg C, 1340 deg F) and the air temperature is 300 K (25 deg C, 80 deg F). The results for the first 30 seconds of quench are presented here. Constant material properties are assumed for the steel bar, and the latent heat of phase change is not included in the analysis. The flow field around the bar is shown in Fig. 1. The top half of the figure shows the total velocity; the lower half, the stream function. The boundaries between colors in the stream function plot are streamlines in the flow field. As can be seen, the velocity is low at the front of the cylinder due to stagnation, reaches a peak near 80 deg from the flow impingement point, and then separates from the cylinder surface near 120 deg. The velocity in the wake region is low.
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机译：在20 bar（290 psi），20 m / s（100 ft / s）的空气中以横流淬火10 cm（4 in。）圆棒。初始条形温度为1000 K（725摄氏度，1340华氏度），空气温度为300 K（25摄氏度，80华氏度）。此处显示了淬火的前30秒的结果。假定钢筋具有恒定的材料性能，并且分析中不包括相变潜热。棒周围的流场如图1所示。图的上半部分显示了总速度;图1的上半部分显示了总速度。下半部分，流功能。流函数图中颜色之间的边界是流场中的流线。可以看出，由于停滞，汽缸前部的速度较低，在距流动冲击点80度附近达到峰值，然后在120度附近与汽缸表面分离。尾流区域的速度较低。
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