Similar modeling method for spray evaporation two-phase flow process

Abstract

The invention discloses a similar modeling method for a spray evaporation two-phase flow process, and belongs to the field of multiphase flow structures. According to the method for similar modeling of the spray evaporation two-phase flow process, the similar modeling method for the spray evaporation two-phase flow process in the high-temperature airflow is provided according to the idea that evaporation motion trails of liquid drops are similar through the thermodynamic mechanism of the evaporation motion process of the liquid drops in the high-temperature airflow and in combination with the multiphase flow theory. According to the similar modeling method provided for the spray evaporation two-phase flow process in the high-temperature airflow, the similarity of a spray diffusion structure and a droplet group evaporation movement track in the high-temperature airflow is theoretically described. Therefore, the spray evaporation two-phase flow process under the actual high-temperature condition is researched by carrying out a low-temperature parameter similar simulation test, and the problem that experimental research is difficult to carry out in the spray evaporation process under the actual high-temperature environment is solved; the similar modeling method provided by the invention is wide in applicable temperature parameter range and simple in model parameter determination and calculation process.

Description

technical field [0001] The invention belongs to the field of multiphase flow organization, in particular to a similar modeling method for a two-phase flow process of spray evaporation. Background technique [0002] In the industrial field, there are a large number of complex gas-liquid two-phase flow processes such as high temperature and high pressure, such as spray humidification in the chemical industry, jet pre-cooling of aero-engines, etc. The liquid working medium is sprayed into the air flow in the form of a spray to mix and evaporate, thereby reducing the The temperature of the main air flow and the quality of the gas-liquid two-phase flow process organization directly affect the heat exchange efficiency between the gas-liquid two-phase, which in turn affects the performance and safety of industrial equipment and processes. Experimental research is the basis for understanding the heat transfer mechanism and law of gas-liquid two-phase flow. However, the high-tempera...

AI Technical Summary

Problems solved by technology

However, the high-temperature, high-pressure or high-speed environmental conditions of industrial processes have brought great difficulties to the experimental research of gas-liquid two-phase flow processes. It is difficult for conventional laboratory conditions to reproduce the high-temperature, high-pressure and other environments of the actual process, and in close to actual working conditions Carrying out experiments under these conditions will also result in high costs and certain safety...

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