Abstract
The waves propagating along the liquid-vapor interface in a medium with near-critical parameters of state are investigated experimentally and theoretically. The temperature dependence of the velocity of the interphase perturbations is obtained experimentally. As the critical point is approached, the velocity decreases in accordance with a power law. This is associated with a decrease in the difference in liquid and vapor densities. Depending on the proximity of the critical point two propagation regimes with different exponents exist. This is a result of the effect of the compressibility, which increases as the critical point is approached, on the density profile. The spatial evolution of the wave profile is obtained. An analysis of the experimental results leads to the conclusion that in the first case the wave process obeys the Korteweg-de Vries equation with weak dispersion and weak nonlinearity. A qualitative description of the second propagation regime is proposed.
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Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 4, pp. 134–140, July–August, 1991.
The authors are grateful to V. S. Ivanov for assisting with the experiments.
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Borisov, A.A., Borisov, A.A. & Leonenko, Y.G. Gravity waves on the liquid-vapor phase interface in a medium with near-critical parameters of state. Fluid Dyn 26, 587–592 (1991). https://doi.org/10.1007/BF01050322
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DOI: https://doi.org/10.1007/BF01050322