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Polydisperse aerosol condensation with heat and mass conservation: I. Model description with applications to homogeneous systems

机译：具有热和质量守恒功能的多分散气溶胶冷凝：I.模型描述及其在均相系统中的应用

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摘要

A computational solution of the coupled heat and mass transport equations for aerosols, which may be either single component or multicomponent, in a finite volume is developed under nonsteady state and nonisothermal conditions. It is capable of computing the temperature and vapor density profile around the droplets. Both mass and heat are conserved effectively in the volume, which enables this computational model to describe time-dependent, competitive, aerosol condensation and evaporation. Calculations for pure water particles and sodium nitrate particles in the presence of water vapor are performed. By comparing the particle growth for different number densities at various initial supersatu-ration conditions, both the initial saturations and particle number concentrations are shown to have great impact on the aerosol condensational growth. Detailed discussions on the change of bulk temperature, bulk relative humidity (RH), total surface area and volume are given.
机译：在非稳态和非等温条件下，开发了有限体积中气溶胶的传热和传质方程的计算解。它能够计算液滴周围的温度和蒸气密度分布。质量和热量都有效地保存在体积中，这使该计算模型能够描述时间依赖性，竞争性，气溶胶冷凝和蒸发。在存在水蒸气的情况下进行纯水颗粒和硝酸钠颗粒的计算。通过比较在各种初始超饱和条件下不同数量密度下的颗粒生长，初始饱和度和颗粒数浓度都显示出对气溶胶凝结生长有很大影响。给出了有关体积温度，体积相对湿度（RH），总表面积和体积变化的详细讨论。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第10期|p.2429-2439|共11页
  • 作者

    Jun Geng; Chu Nie; William H. Marlow;

  • 作者单位

    Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USA Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, USA;

    Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USA School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, People's Republic of China;

    Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    nonsteady; nonisothermal; condensation model;

    机译：非稳态;非等温;冷凝模型;

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