Soliton interaction in a liquid with gas bubbles

Experiments were conducted with a setup of the shock-tube in order to study the character of the interaction of the solitons in a liquid with gas (CO2) bubbles at sigma/Re much less than unity. Two solitons were formed in a medium by successive time-synchronized breaking of diaphragms of two high-pressure chambers, located one behind the other in the upper part of the tube. By choosing the parameters of the solitons and the medium, it was possible to observe the co-moving interaction of these solitons at a distance of 1 to 2 m from the introduction of the pulses into the medium, as well as the opposing interaction between the second and first soliton when the latter is reflected from the lower end of the low-pressure chamber. It is shown that when the solitons collide they interact like linear waves, and in the case when one soliton overtakes the other different forms of nonlinear interaction are observed.