Fuel and Combustion

Fuel and Combustion

A Dynamic Analysis of Fuel Droplets Breakup and Modification of Taylor Analogy Breakup (TAB) with Respect to Density Ratio Effects

Authors
Amir Omidvar 1
Hasan Ghaleghi 2
1 School of Mechanical and Aerospace Engineering, Shiraz University of Technology, Shiraz, Iran
2 Faculty of Engineering, Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran
Abstract
This paper presents a dynamic investigation of fuel droplets breakup at the vicinity of critical Weber number. Based on prior research, the critical Weber number depends on density ratio. However, in traditional diesel spray droplet breakup models such as TAB, the critical Weber number is considered to be constant at a value of 12. In this article, some modification has been proposed in order to improve Taylor analogy breakup model with respect to density ratio effects. The results of the present research indicate that at higher combustion chamber pressure levels, critical Weber number is greater than the custom value of 12 in novel diesel engines. In addition, the results from our proposed model are in good agreement with experimental data reported by other researchers. It is, therefore, concluded that the new modified model is effectively more reliable in comparison with TAB model
Keywords
Spray
Droplet breakup
Weber number
Density ratio
 
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