cylindrical air cavities, mathematical model of shock wave deformation, inertia of the liquid-gas cavities system, mass of model charges

The issues of protection of underwater objects using cylindrical air cavities are studied. In a number of tasks, it is fundamentally important to have not only the distribution of the pressure field in the liquid because of the movement of the boundaries of the deformable system, but also the parameters of the movement of the liquid itself. In this case, the parameters of the liquid movement have a significant effect on the fastening conditions of the gas cavities. The shock wave, spreading in water with gas inclusions, undergoes significant deformation. Preliminary experiments conducted to determine the parameters of underwater shock wave in water with air cavities have shown the possibility of controlling pressure peaks and, therefore, creating conditions for the safety of the underwater structure. Analyzing theoretical studies, it can be seen, that a dispersion of the wave process occurs inside the liquid region with gas cavities. The initial pressure peak decreases dramatically. In the area of the protected object, it decreases by almost two orders of magnitude compared to the maximum pressure in the initial shock wave. The pressure is mainly determined by the pulsation of the gas cavities generated by the explosive air wave. The duration of the load in the presence of gas cavities increases sharply.