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烟气在加热炉回热装置中流动,拟用空气介质进行实验。已知空气黏度
,烟气运动黏度
,烟气流速
,如若实际与模型长度的比尺λ
L
=5,则模型空气的流速应为:()
A
3.75m/s
B
0.15m/s
C
2.4m/s
D
60m/s
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