Acoustical method of studying the growth and collapse of a vapor bubble in boiling

An Acoustic Method of Investigation of the Process of Boiling

“…(13) After the first one of them is divided by τ * , a constant which has the time dimension, its left-hand part represents the variation of the energy flux via unit interfacial area of the bubble per unit time, i.e., the variation of the heat flux density dq. In view of this, …”

“…In this paper, we have generalized and systematized the previously obtained [8][9][10][11][12][13] and new results of the development of an acoustic method for the investigation of the dynamics of variation of the volume of a vapor bubble under conditions of boiling. This method is free of the disadvantages identified above and may be used in experimental facilities with direct input of experimental data into a computer and their subsequent processing using modern information technologies.…”

Hydrodynamics, thermodynamics, and acoustics of exponential growth of the vapor bubbles at saturated boiling

“…On its basis, the hydrodynamic, thermodynamic, acoustic dependences of the vapour bubble growth were obtained, and then the bound correlations of all these dependences were derived. This paper is a continuation and completion of the previous research [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

“…The dependencies (5a), (8a) and (9a) have been investigated for extrema in order to determine the numerical factors for which the maxima (5), (8) and the positive maximum (9) are equal to 1. …”

“…In [1][2][3][4][5][6][7][8][9][10][11][12][13][14], an analytically rigorous derivation of the formulae of absolute values of variables presented in Table 1 on the left is presented: the radius of the vapour bubble, the velocity and acceleration with its growth, the specific and total heat flux through the interphase surface of the bubble, the liquid overheating and the heat transfer coefficient, sound pressure for one-and three-dimensional cases.…”