当横流雷诺数与射流雷诺数之比大于0．5之后，有横流时的冲击射流冷却局部努赛尔数比无横流时有较为显著下降。
When the cross-flow to jet Reyuolds number ratios are greater than 0. 5, the jet impingement Nusselt numbers arc obviously lower than that without cross-flow.
其它条件不变时，随流量系数的提高，平均努赛尔特数大幅度上升。
The averaged Nusselt number is dramatically increased with the increase of inlet mass flow coefficient.
该预旋角情况下，进气雷诺数对盘面平均努赛尔特数的影响大于旋转雷诺数。
The cooling flow rate have more effects on average nu number than rotating speed in this pre-swirl Angle.
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