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<b>Abstract</b>— <p>The article presents new details of the algorithm and the results of calculating the heat and mass exchange of water with air in a conical spray apparatus, taking into account the early crisis of droplet resistance and the accompanying crisis of heat and mass transfer. The basis of the mathematical model used is non-stationary differential equations of the flow of a compressible medium, supplemented by equations of heat and mass transfer from the droplets to the gas. In the difference analogues of the equations of continuity and phase motion, the well-known explicit Lax–Wendroff scheme is used. The calculated distributions of the velocities, phase temperatures, gas pressure, and densities of water vapor in the air and saturated vapor above the surface of the droplets in a two-phase flow are presented. In the calculations, in particular, the dependences of the average temperatures of gas and liquid in the outlet section of the apparatus and the gas flow rate through it on the gas pressure drop, as well as the liquid temperature on the height of the apparatus, are established.</p>

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Calculation of Interphase Heat and Mass Transfer in a Spraying Apparatus with a Conical Phase-Mixing Chamber and One Nozzle

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • N. N. Simakov

摘要

Abstract—

The article presents new details of the algorithm and the results of calculating the heat and mass exchange of water with air in a conical spray apparatus, taking into account the early crisis of droplet resistance and the accompanying crisis of heat and mass transfer. The basis of the mathematical model used is non-stationary differential equations of the flow of a compressible medium, supplemented by equations of heat and mass transfer from the droplets to the gas. In the difference analogues of the equations of continuity and phase motion, the well-known explicit Lax–Wendroff scheme is used. The calculated distributions of the velocities, phase temperatures, gas pressure, and densities of water vapor in the air and saturated vapor above the surface of the droplets in a two-phase flow are presented. In the calculations, in particular, the dependences of the average temperatures of gas and liquid in the outlet section of the apparatus and the gas flow rate through it on the gas pressure drop, as well as the liquid temperature on the height of the apparatus, are established.