Abstract
During periodic heat exchange at the boundaries of solids, liquids, and gases, temperature oscillations due to thermal conductivity will propagate in them. These oscillations are damped rapidly in an isothermal viscous liquid. Over a wavelength, their amplitude is reduced by e 2~ ~ 540 times [i]. Under real conditions with the existence of temperature and gravitational fields, the convective motion which is produced will have a significant effect on the propagation of temperature oscillations. In [2, 3] the opposite problem was studied: that of the effect on the convective stability of a layer of temperature oscillations propagating inside the fluid away from the boundary on which the temperature changes periodically. The problem of the propagation of weakly damped thermoconvective waves in a viscous thermally conducting incompressible liquid was first considered in [4]. The propagation of thermoconvective waves in a horizontal layer of liquid with free boundaries before and after loss of equilibrium stability is studied in [5].
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