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Influence of incoming air conditions on fuel spray evaporation in an evaporating chamber

机译：进入空气条件对蒸发室燃料喷射蒸发的影响

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The main purpose of this article is to investigate the effects of pressure and temperature of incoming air into an evaporating chamber on fuel spray evaporation and fuel droplets characteristics. Before that, the influences of secondary break-up and coupling between droplets and gas phase on the present spray modeling are studied. An Eulerian-Lagrangian approach and two-way coupling model are implemented for modeling spray and atomization of liquid fuel in air. The SSTk - co turbulence model is applied to estimate eddy viscosity, whilst the discrete random walk model is employed to trace the droplets in a turbulent flow. With increasing inlet air temperature from 373 to 573 K, the lifetime and penetration depth of droplets are reduced by about 70% and 46%, respectively. The influence of incoming air pressure on droplets lifetime is not remarkable. The penetration of droplets is reduced by almost 61% while augmenting the air pressure from 1.0 to 10.0 atm. (C) 2018 Elsevier Ltd. All rights reserved.
机译：本文的主要目的是研究进入空气的压力和温度的影响燃料喷射蒸发和燃料液滴特性的蒸发室。在此之前，研究了本发明喷雾建模上液滴和气相之间的二次分解和耦合的影响。实现了欧拉维拉格朗尼亚方法和双向耦合模型，用于对空气中的液体燃料喷涂和雾化建模。 SSTK - CO湍流模型应用于估计涡流粘度，而采用离散随机步道模型以在湍流中追踪液滴。随着入口空气温度的增加，从373〜573 k，液滴的寿命和渗透深度分别降低了约70％和46％。输入气压对液滴寿命的影响不是显着的。液滴的渗透率降低了近61％，同时增加了1.0至10.0 atm的空气压力。 （c）2018年elestvier有限公司保留所有权利。

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