Size of Detonation Cell

The detonation cell size is a parameter characterizing non one-dimensional structure of a detonation wave. The detonation mixture reactivity changes with variations of the mixture composition, its initial temperature and pressure when the mixture is diluted with inert gases. All these parameters lead to changes in the detonation cell size. 

Transverse cell size a (in English literature is determined as the average distance between the unidirectional transverse wave propagation lines in the plane perpendicular to the detonation tube axis. Longitudinal cell size is found from  

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Here po - mixture density, D - detonation velocity, a - transverse size of detonation cell, I - energy parameter. Values I for HAM are given in Table 7.9. 

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