Abstract
Based on the physicomathematical model developed before, verified by comparison results of calculations with experimental data, parameters of a gas-dispersed jet, interacting with a solid body, are numerically investigated. In a wide range of temperature and pressure values in a mixing chamber, material density, the size and mass fraction of particles, the nozzle geometry and the streamlined body form, ratio of specific heat capacities, and the Mach number of carrier gas, calculations are made, which allows one to determine the impact of specified factors on the boundary of a perfectly inelastic collision of particles with the body, accompanied by different physical processes (erosion, cold deposition, ultradeep penetration). Since temperature falls below the Debye value at high expansion of flow, the impact of a significant change of the heat capacity and thermal conductivity of particles are taken into account. Radial distributions of density and velocity of the dispersed mass are plotted, which characterize the “quality” of two-phase flow as a tool for the ground modelling of interaction of a flying vehicle with a dust-laden atmosphere (containing, for example, particles of volcanic outbursts or ice crystals) as well as in technologies of surface treatment.
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Original Russian Text © G.V. Molleson, A.L. Stasenko, 2017, published in Teplofizika Vysokikh Temperatur, 2017, Vol. 55, No. 6, pp. 742–749.
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Molleson, G.V., Stasenko, A.L. Gasdynamic acceleration of microparticles and their interaction with a solid body. High Temp 55, 906–913 (2017). https://doi.org/10.1134/S0018151X17060141
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DOI: https://doi.org/10.1134/S0018151X17060141