RT Journal Article ID 42f5c765514b80ab A1 Zaichik, Leonid I. A1 Dombrovsky, Leonid A. T1 Allowance for the Dynamics of a Vapor Bubble in Calculation of Thermal Interaction of a Hot Spherical Particle with Surrounding Water JF Heat Transfer Research JO HTR YR 2003 FD 2004-04-04 VO 34 IS 7&8 OP 11 AB A nonstationary problem of thermal interaction of a hot spherical particle and surrounding water is being solved for conditions of heavy accident at a nuclear reactor. In calculation of heat transfer through a vapor gap thermal radiation of a particle is taken into account. For the initial stage of interaction, an analytical solution is obtained in isobaric approximation; comparison with a full numerical solution has shown that oscillations of vapor pressure and vapor-gap thickness do not influence mean parameters of heat transfer from a particle to water. Results of the damping effect of thermal radiation of a particle on oscillations of particle vapor envelope are obtained. Possible destruction of a melt drop under the influence of pressure fluctuations in the vapor gap is evaluated and the size of a drop is determined at which its further destruction is impossible. PB Begell House LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,37e97012688a992b,42f5c765514b80ab.html