The influence of non-ideal vapor-liquid equilibrium on the evaporation of ethanol/iso-octane droplets

A. Bader; P. Keller; C. Hasse

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The influence of non-ideal vapor-liquid equilibrium on the evaporation of ethanol/iso-octane droplets

机译：非理想气液平衡对乙醇/异辛烷液滴蒸发的影响

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摘要

The present work investigates the differences between ideal and non-ideal vapor-liquid equilibria (VLE) and their effect on vaporization for multicomponent hydrocarbon fuels, which are representative for combustion and gasification. For this purpose, a parametric study is performed for examining non-ideal VLE behavior within a pressure range from 0.5 to 20.0 bar and an ambient temperature range from 0 ℃ to 600 ℃, which are typical vaporization conditions in technical systems. The VLE results are then applied in a OD single-droplet evaporation model, which can be considered a base model for most CFD applications. The droplet life time and the evaporation rates of the individual liquid components are studied for ideal and non-ideal VLE by varying the pressure, the temperature and the particle Reynolds number. A detailed analysis of the transient processes is performed in binary and ternary diagrams and a separation factor is introduced as a quantitative means of measuring for the effective relative volatility of the species. The observed differences suggest that non-ideal VLE have a significant impact on the droplet evaporation characteristics for complex hydrocarbon mixtures.

机译：本工作研究了理想和非理想气液平衡（VLE）之间的差异以及它们对多组分碳氢燃料的汽化的影响，这是燃烧和气化的代表。为此，进行了参数研究，以检查在0.5至20.0 bar的压力范围和0℃至600℃的环境温度（这是技术系统中的典型蒸发条件）下的非理想VLE行为。然后，将VLE结果应用于OD单滴蒸发模型，该模型可以被视为大多数CFD应用的基础模型。通过改变压力，温度和粒子雷诺数，研究了理想和非理想VLE的液滴寿命和各个液体组分的蒸发速率。在二值和三值图中对瞬态过程进行了详细的分析，并引入了分离因子作为衡量物种有效相对挥发性的定量手段。观察到的差异表明，非理想的VLE对复杂烃混合物的液滴蒸发特性具有重大影响。

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来源
《International Journal of Heat and Mass Transfer》 |2013年第9期|547-558|共12页
作者
A. Bader; P. Keller; C. Hasse;
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作者单位

Department of Energy Process Engineering and Chemical Engineering, Technische Universitat (TU) Bergakademie Freiberg, Germany;

Chair of Numerical Thermo-Fluid Dynamics, Department of Energy Process Engineering and Chemical Engineering, Technische Universitat (TU) Bergakademie Freiberg, Germany;

Chair of Numerical Thermo-Fluid Dynamics, Department of Energy Process Engineering and Chemical Engineering, Technische Universitat (TU) Bergakademie Freiberg, Germany;

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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
Non-ideal vapor-liquid equilibrium; Multicomponents; Droplet evaporation; Droplet life time; Separation factor; Ternary diagram;

机译：非理想的气液平衡;多组分;液滴蒸发;液滴寿命;分离因子;三元图;

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1. Heating and evaporation of ethanol/iso-octane droplets considering non-ideal mixtures and finite rate transfer [J] . Zanutto C. P., Paladino E. E., Nazareth T. C. Fuel . 2019,第Nova15期

机译：考虑非理想混合物和有限速率传递的乙醇/异辛烷液滴的加热和蒸发
2. Heating and evaporation of ethanol/iso-octane droplets considering non-ideal mixtures and finite rate transfer [J] . Zanutto C. P., Paladino E. E., Nazareth T. C. Fuel . 2019,第NOVa15期

机译：考虑非理想混合物和有限速率传递的乙醇/异辛烷液滴的加热和蒸发
3. Predicting evaporation dynamics of a multicomponent gasoline/ethanol droplet and spray using non-ideal vapour-liquid equilibrium models [J] . W. Yang, J. Xia, X.Y. Wang, International Journal of Heat and Mass Transfer . 2021,第Apra期

机译：预测多组分汽油/乙醇液滴的蒸发动力学和使用非理想蒸汽平衡模型喷雾
4. The Effect of Non-Ideal Vapour-Liquid Equilibrium and Non-Ideal Liquid Diffusion on Multi-Component Droplet Evaporation for Gasoline Direct Injection Engines [C] . Joseph Camm, Richard Stone, Martin Davy, SAE World Congress Exhibition . 2015

机译：非理想蒸汽液平衡和非理想液体扩散对汽油直喷发动机多组分液滴蒸发的影响
5. Vapor-liquid equilibrium of highly non-ideal, aqueous-organic systems and a computer model for mass transport in gravity flow networks [D] . Turner, Louis Hampton, IV. 1995

机译：高度不理想的水性有机系统的汽液平衡和重力流网络中质量输运的计算机模型
6. The Abbreviated Impactor Measurement (AIM) Concept: Part II—Influence of Evaporation of a Volatile Component—Evaluation with a Droplet-Producing Pressurized Metered Dose Inhaler (pMDI)-Based Formulation Containing Ethanol as Cosolvent [O] . J. P. Mitchell, M. W. Nagel, V. Avvakoumova, 2009

机译：简化的撞击器测量（AIM）概念：第二部分-挥发性组分的蒸发影响-使用产生液滴的加压计量吸入器（pMDI）为基础的配方其中含有乙醇作为助溶剂
7. Numerical investigation of evaporation of a single ethanol/iso-octane droplet [O] . Banerjee Raja 2013

机译：单乙醇/异辛烷液滴蒸发的数值研究

The influence of non-ideal vapor-liquid equilibrium on the evaporation of ethanol/iso-octane droplets

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