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Safety and environmental standards for fuel storage sites

Final report

72

Figure 16

Vapour and droplet velocities induced by liquid cascades of different densities. The highest

velocities shown in both plots (for comparison) correspond to free-fall with no air resistance. The lower

velocities correspond respectively to liquid flux densities of 100, 10, 1, 0.1 and 0.01 kg/m

2

/s.

Figure 17

Contours of the ratio of predicted

vapour volume fraction to the saturation

volume fraction. A value of 1.0 indicates that

the vapour is saturated. The three predictions

are for different initial droplet size distributions

using the Rosin-Rammler diameters shown.

Vapour flow driven by sprays of varying mass density

0

2

4

6

8

10

12

14

16

18

20

0

5

10

15

20

Distance below origin (m)

Vapour velocity (m/s)

100 kg/s/m2

10 kg/s/m2

1 kg/s/m2

0.1 kg/s/m2

0.01 kg/s/m2

free fall velocity