On the mechanics of thermal collapse of a vapor bubble translating in an isothermal subcooled liquid

Roy, Koustav; Paruya, Swapan

doi:10.1016/j.ijmultiphaseflow.2023.104691

Cited by 2 publications

(2 citation statements)

References 37 publications

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“…The vapor in the bubble will be overheated relative to the liquid if T s0 > T b (p l0 ). This process is accompanied by a sharp increase in the heat transfer coefficient, and the patterns of this boiling regime are discussed in detail in the literature [70,72,73].…”

Section: Cavitation Of Bubbles With Superheated Steam In a Subcooled ...mentioning

confidence: 97%

“…The authors of [69,70], believing that inertial and thermal effects play an equally important role in the cavitation process, conducted special theoretical and experimental studies to assess the boundary that determines the predominant influence of each of these effects. Theoretical analysis comes down to the proposal of using the analytical solution of the Rayleigh equation [14] for the inertial stage of growth and compression, and the analytical solution of the Plesset and Zwick equation [71] for the thermal stage.…”

Section: Dynamics Of a Steam Bubble In Hydrodynamic Cavitation Processesmentioning

confidence: 99%

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Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Pavlenko

2024

Energies

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To study the behavior of a bubble clusters in cavitation devices, a numerical study of the dynamics of bubbles in a compressible liquid was performed, taking into account interfacial heat and mass transfer. The influence of regime and system parameters on the intensity of cavitation processes is considered. Physical and chemical transformations during the cavitation treatment of liquids are caused not only by the action of shock waves and emitted pressure pulses but also by extreme thermal effects. At the stage of extreme compression of the bubble, the vapor inside the bubble and the liquid in its vicinity transform into the state of a supercritical fluid. The presented model analyzes the nature of microflows in the interbubble space and carries out a quantitative calculation of the local values of the parameters of the velocity and pressure fields.

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Section: Cavitation Of Bubbles With Superheated Steam In a Subcooled ...mentioning

confidence: 97%

Section: Dynamics Of a Steam Bubble In Hydrodynamic Cavitation Processesmentioning

confidence: 99%

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Pavlenko

2024

Energies

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How do various forces affect pressure waves in bubbly flows?

Arai,

Kanagawa

2024

Physics of Fluids

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This study investigated the weakly nonlinear propagation of pressure waves in compressible, flowing water with spherical microbubbles, considering various forces. Previous theoretical studies on nonlinear pressure waves in bubbly flows did not consider the forces acting on the bubbles, although the validity of ignoring these forces has not been demonstrated. We focused on every possible force such as drag, gravity, buoyancy, and Bjerknes (acoustic radiation) forces acting on bubbles and studied their effects on pressure waves in a one-dimensional setting. Using a singular perturbation method, the Korteweg–de Vries–Burgers equation describing wave propagation was derived. The following results were obtained: (i) Bjerknes force on the bubbles enhanced the nonlinearity, dissipation, and dispersion of the waves; (ii) Drag, gravity, and buoyancy forces acting on the bubbles increased wave dissipation; (iii) Thermal conduction had the most substantial dissipation effect, followed by acoustic radiation, drag, buoyancy, and gravity. We confirmed that the dissipation due to forces on gas bubbles was quantitatively minor.

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On the mechanics of thermal collapse of a vapor bubble translating in an isothermal subcooled liquid

Cited by 2 publications

References 37 publications

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

How do various forces affect pressure waves in bubbly flows?

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