Cell Size as the Main Geometric Parameter of a Multifront Detonation Wave

The concept of the cell size of multifront gaseous detonation proposed about 40 years ago is used widely to estimate other detonation parameters: the critical initiation energy and critical diameters. In this paper the review of all known models for calculation of the cell size as the main detonation parameter is presented. Models were analyzed on their physical basis and basic assumptions. All models were checked also on their correctness to estimate the cell size for different mixtures. The calculated values of cell size were compared with available experimental data. On the basis of such comparison only some models are recommended for engineering calculations in practical applications. The formulas for estimating important detonation parameters with the dimension of length are proposed.