Study of the Ultrasonic Cavitation Evolution within Sucrose Solutions

摘要

We have studied the evolution of the void rate within a cavitation bubble field with sucrose solutions. The cavitation is ultrasonically induced at 308 kHz. The void rate measurement is performed by an UHF method in a resonant cavity. The cavitation noise power is also recorded both at the beginning and at the end of the acoustic irradiation, The weight sucrose concentration of experimented solutions ranges from 0 % to 25 %. We observe that the cavitation behaviour is slightly perturbed by the sucrose concentration increase at the beginning of the acoustic irradiation. Later on and over a weight sucrose concentration ranging between 8 % and 13 %, the void rate formation slows down. It results into a strong decrease in the void rate measured at the end of the acoustic irradiation. The cavitation noise power also decreases.