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Low-frequency vibrations in a near-critical fluid
Physics of Fluids
The response of a near-critical fluid to low-frequency vibrations is investigated by means of numerical simulations. Its characteristics are first established by one-dimensional analysis. It is shown that the strong thermo-mechanical coupling occurring in the boundary layers tends to make the fluid oscillate homogeneously at low frequencies, and with a larger amplitude than in a normal gas. The numerical results obtained in this first part are found to confirm earlier predictions made indoi:10.1063/1.870295 fatcat:nbifmvaurrf7zafcumo5x4xr2q