Emergency Evacuation of Hazardous Chemical Accidents Based on Diffusion Simulation

Figure 1

The concentration diffusion with different leakage time.

(a) The concentration diffusion figure when the leakage has lasted for 12 seconds

(b) The concentration diffusion figure when the leakage has lasted for 45 seconds

(c) The concentration diffusion figure when the leakage has lasted for 270 seconds

(d) The concentration diffusion figure when the leakage has lasted for 315 seconds