Bader, A. ; Keller, P. ; Hasse, C. (2013)
The influence of non-ideal vapor-liquid equilibrium on the evaporation of ethanol/iso-octane droplets.
In: International Journal of Heat and Mass Transfer, 64 (0)
doi: 10.1016/j.ijheatmasstransfer.2013.04.056
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
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 ° Cto 600 ° C, which are typical vaporization conditions in technical systems. The VLE results are then applied in a 0D 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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Bader, A. ; Keller, P. ; Hasse, C. |
| Art des Eintrags: | Bibliographie |
| Titel: | The influence of non-ideal vapor-liquid equilibrium on the evaporation of ethanol/iso-octane droplets |
| Sprache: | Englisch |
| Publikationsjahr: | 2013 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | International Journal of Heat and Mass Transfer |
| Jahrgang/Volume einer Zeitschrift: | 64 |
| (Heft-)Nummer: | 0 |
| DOI: | 10.1016/j.ijheatmasstransfer.2013.04.056 |
| URL / URN: | http://dx.doi.org/10.1016/j.ijheatmasstransfer.2013.04.056 |
| Kurzbeschreibung (Abstract): | 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 ° Cto 600 ° C, which are typical vaporization conditions in technical systems. The VLE results are then applied in a 0D 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. |
| Freie Schlagworte: | Non-ideal vapor liquid equilibrium |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau > Fachgebiet Simulation reaktiver Thermo-Fluid Systeme (STFS) 16 Fachbereich Maschinenbau |
| Hinterlegungsdatum: | 03 Nov 2017 07:45 |
| Letzte Änderung: | 20 Nov 2017 09:18 |
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