Aerodynamic model of spark discharge

The contribution presents a new mathematical aerodynamic model of development of spark discharge and corresponding experimental data confirming observation of more separate discharge phases during formation and extinction of the spark discharge. The model is developed using basic physical laws. One of the dominant, calculated and measured properties of the spark discharge is the radius of the formed spark channel. Description of spreading of shock wave is an additional important calculated parameter. Results of numerical calculations of the dominant derived equations are presented and discussed in detail.