Abstract
The mathematical modeling results of the simultaneous processes of heat and mass transfer under the conditions of intense phase changes (melting of ice) during the movement of cryobot have been given. The spatial unevenness of the melting rate of ice has been taken into account. It has been established that the rate of passage of the cryobot depends essentially on its temperature. According to the results of the numerical simulation, considerable cooling of the cryobot sheath has been established. The latter is due to the high endothermic effect of melting ice.
Highlights
One of the more effective ways of studying the structure, the material composition and the dynamics of ice deposits is drilling wells
Practically identical temperature gradients are formed in the cryobote. This is due to the fact that when the cryobot moves in the region of conjugation of the walls of the heat drill and ice, a water membrane is formed, the temperature of which is equal to the phase transition temperature of 273 K
The article presents a mathematical model of the process of cryobot movement in the conditions of melting of massive ice structures
Summary
One of the more effective ways of studying the structure, the material composition and the dynamics of ice deposits is drilling wells. There is a narrowing of the well, which in the future can lead to accidents To prevent this situation, the well is filled with a special fluid that compensates for the pressure of the ice. Recently, during drilling, a mixture of a hydrocarbon liquid is used that is similar to kerosene with difluoroethane. The samples taken can be contaminated [3] This process can be carried out in three ways: the first variant involves the thermal destruction of ice structures [4]; the second variant involves the use of mechanical action on the layers of ice (“classical” drilling) [5]; the third variant is based on the combined chemical and thermal effects [6]. At the current stage of the development of science and technology, this depth is maximal Most likely, this is due to the poor knowledge of the processes of melting and crystallization of massive ice structures by a local source of heating. The aim of this work is the mathematical modeling of heat transfer processes that occur together under ice melting conditions during the movement of the cryobot
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