Showing papers by "Russian Ministry of the Emergency Situations published in 2001"
TL;DR: In this article, a method for determining the parameters of the medium contaminated with radioactive sources from the moment of the explosion up to the time when the motion of the cloud is determined primarily by meteorological conditions is proposed.
Abstract: For predicting the radiation conditions after an explosion at a radiation-dangerous object, a method is proposed for determining the parameters of the medium contaminated with radioactive sources from the moment of the explosion up to the time when the motion of the cloud is determined primarily by the meteorological conditions. The formulation of the explosion problem takes account of the interaction of the gas with finely dispersed water particles, including mass, momentum, and energy transfer (due to phase transformations of the water), aerodynamic drag forces, and convective heat transfer. The problem is solved using the nonstationary method of large particles, modified by introducing a flow-correction step. The results of a test calculation of the 1957 explosion in the Southern Urals are presented. 4 figures, 5 references.