Abstract
A mathematical model of conjugate heat transfer in the heterogeneous system "solid–gas–liquid medium" with account of the description of bubble vaporization in a liquid flow has been proposed. Consideration has been given to a two-dimensional nonstationary formulation taking account of the axisymmetry of cooling-medium flow about the longitudinal axis of a cylinder. Results of numerical calculations of thermophysical parameters during the cooling of a high-temperature metal cylinder manufactured from structural-grade steel by a flow of a gas–liquid medium in an annular channel have been given. The influence of the flow velocity on the value of the concentration of the vapor in the liquid and the regularities of cooling of the metal cylinder have been assessed. An analysis has been made of the influence of the formation, growth, and motion of vapor bubbles in the liquid on the distribution of the heat flux over the surface of the conjugate boundary of the metal cylinder and the gas–liquid medium.
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