Rieß S, Rezaei J, Weiß L, Peter A, Wensing M (2021)
Publication Language: English
Publication Type: Journal article
Publication year: 2021
Book Volume: 173
Article Number: 105224
DOI: 10.1016/j.supflu.2021.105224
The nature of phase change in Diesel engine fuel sprays is not clear to this date. There are different stances on the question whether fuel or a fuel-rich phase can get supercritical (one-phase mixing) or not (two-phase mixing). The presented study utilizes an air entrainment model derived from momentum conservation to determine local mass ratios of ambient gas and fuel. Subsequently, two phase change models are formulated based on this model. On the one hand, the assumption is taken that fuel evaporates without boiling or getting supercritical. On the other hand, evaporation is excluded, assuming that fuel is heated up till boiling or getting supercritical. Both models allow the calculation of values for the liquid length of different fuel sprays. Comparison to experimental data shows that – although two-phase mixing is relevant in any case – at engine-like ambient conditions one-phase mixing is a relevant scenario.
APA:
Rieß, S., Rezaei, J., Weiß, L., Peter, A., & Wensing, M. (2021). Phase change in fuel sprays at diesel engine ambient conditions: Modeling and experimental validation. Journal of Supercritical Fluids, 173. https://dx.doi.org/10.1016/j.supflu.2021.105224
MLA:
Rieß, Sebastian, et al. "Phase change in fuel sprays at diesel engine ambient conditions: Modeling and experimental validation." Journal of Supercritical Fluids 173 (2021).
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