7.5 Cooling Curves
259
distances away from the focus. The reader is invited to calculate the limit of both
functions when x → ∞ for different air speeds.
Speed (m s −1 )
2
4
6
8
10
Distance to the fire (x) (m)
0.5
796
797
798
798
798
1
791
794
796
796
797
10
715
744
757
764
769
30
571
644
677
696
709
50
456
558
606
635
655
80
326
449
513
553
581
100
260
389
459
504
536
150
148
271
347
400
438
250
48
132
199
252
294
500
3
22
50
79
108
750
0
4
12
25
40
1000
0
1
3
8
15
1500
0
0
0
1
2
2000
0
0
0
0
0
7.6 Average Temperatures at Junctions and Forks
At junctions, several airflows, including fumes, come together and mix. At bifurcations, or forks, a flow divides into several different streams. Here the focus will be
on two processes: