Ignition parameter that affect

Some of the parameters that affect VCE behavior25 are quantity of material released, fraction of material vaporized, probability of ignition of the cloud, distance traveled by the cloud before ignition, time delay before ignition of cloud, probability of explosion rather than fire, existence of a threshold quantity of material, efficiency of explosion, and location of ignition source with respect to release. 

Turbulent Diffusion FDmes. Laminar diffusion flames become turbulent with increasing Reynolds number (1,2). Some of the parameters that are affected by turbulence include flame speed, minimum ignition energy, flame stabilization, and rates of pollutant formation. Changes in flame stmcture are beHeved to be controlled entirely by fluid mechanics and physical transport processes (1,2,9). 

In view of the above the following ignition tests ignition temperature tests are primarily of historical interest. They also serve to outline the difficulties encountered in trying to characterize quantitatively the response of explosives to heat. Quantitative treatment of explosion temperatures and delay to explosion (induction time) and the parameters of the explosive that affect these quantities will be presented in a future Vol under Thermal Explosions ... 

---