Analysis of spray combustion characteristics of diesel, biodiesel and their n-pentanol blends based on a one-dimensional semi-phenomenological model

Yu Liu, Zhipeng Yuan, Yinjie Ma, Jianqin Fu, Ronghua Huang and Jingping Liu

Applied Energy, 2019, vol. 238, issue C, 996-1009

Abstract: Spray mixing and combustion processes are regarded as the major factors that determine the energy conversion efficiency and emission level of internal combustion engines. However, the related researches mainly rely on 3D flow simulation or optical engine experiments, which are highly expensive and time-consuming. In order to provide a more convenient solution, this paper developed a one-dimensional semi-phenomenological model to achieve accurate and efficient predictions on spray combustion characteristics. The model was constructed by a dimensionless spray theoretical model and limited experimental data of macroscopic spray characteristics. Inside the proposed model, a physical module was used to physical module spray air-fuel mixing conditions like fuel distribution and evaporation. Besides, an improved Arrhenius-typed correlation concerning injection parameters and environment variables was introduced to describe the chemical ignition characteristic of spray combustion. The optical experiment results showed that this method is simple and effective, and the forecasting is satisfactory.

Keywords: Spray combustion; Liquid length; Ignition delay; One-dimensional model; Biofuels (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (3)

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DOI: 10.1016/j.apenergy.2019.01.176

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