An Experimental Study Of The Relaxation Zone Behind Shock Waves In Water Air Mixtures PDF Download

The measurement of the electron concentration in the mixture of air with water vapors, heated by a shock wave, makes it possible under specific conditions to experimentally investigate the constant of the dissociation rate of water. This work presents the results of the investigations of the kinetics of dissociation in such a mixture behind the front of reflected shock waves, carried out by a radio-frequency method. Experiments were conducted on a right-angled shock tube in a mixture of water vapors (10%) with air, in the temperature range 2500-4200K, in equilibrium, at the initial pressure of the investigated mixture 5 mm Hg. At such low temperatures the ionization of an easily ionized admixture could affect the concentration of free electrons. For this reason the concentration of the natural supplements of sodium was also defined in the experiments as the most probable electron source. The experimental data were compared with the calculations of ionization kinetics in an unbalanced region and thermodynamic properties of the mixture in equilibrium.