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Nonlinear physics and mechanics
Analytical Solution of the Rayleigh – Plesset Equation
Filled with Van Der Waals Gas for Various Isoprocesses
M. V. Gasanova, A. G. Gulkanovb, K. A. Modestova a Moscow State University of Civil Engineering
Yaroslavskoe sh. 26, Moscow, 129337 Russia
b Politecnico di Milano,
Piazza Leonardo da Vinci 32, Milan, 20133 Italy
Abstract:
In this paper, we consider a mathematical model of the dynamics of the behavior of a spher-
ically symmetric Rayleigh – Plesset bubble in the van der Waals gas model. The analysis of the
model takes into account various isoprocesses without the presence of condensation and a model
that takes into account condensation in an isothermal process. In each case, various character-
istics are searched for, such as oscillation frequency (linear/small oscillations), damping factor,
relaxation time, decrement, and logarithmic decrement. Solutions are found in quadratures for
various parameters of the equation. The theoretical results obtained are compared with the
results of the numerical solution of the Cauchy problem for various isoprocesses.
Keywords:
nonlinear differential equations, exact solution, small fluctuations, van der Waals
equation, Rayleigh – Plesset equation
Received: 30.06.2023 Accepted: 19.10.2023
Citation:
M. V. Gasanov, A. G. Gulkanov, K. A. Modestov, “Analytical Solution of the Rayleigh – Plesset Equation
Filled with Van Der Waals Gas for Various Isoprocesses”, Rus. J. Nonlin. Dyn., 20:1 (2024), 3–13
Linking options:
https://www.mathnet.ru/eng/nd877 https://www.mathnet.ru/eng/nd/v20/i1/p3
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