The Gas Bubble in a Liquid as a Vibratory System
The specific action of the sound field in the degassing of liquids originates in the vibrations of gas bubbles. An analysis of the interaction of the sound field and single bubble is considerably simplified if we assume that the bubble radius is small in comparison with the acoustic wavelength in the liquid. The pressure in the incident wave, varying periodically with time, excites forced vibrations of the bubble, which are radiated into the surrounding liquid, where they result in the formation of secondary sound waves (acoustic scattering effect). Part of the incident wave energy in this case is used up in overcoming the internal losses in the bubble — liquid system and is released in the form of heat.
KeywordsAcoustic Pressure Cavitation Bubble Sound Field Bubble Radius Radial Mode
Unable to display preview. Download preview PDF.