A NUMERICAL STUDY OF THE UNSTEADY EFFECTS OF DROPLET EVAPORATION AND IGNITION IN HOMOGENEOUS ENVIRONMENTS OF FUEL AND AIR

被引：5

作者：

SAMUEL, P

KARIM, GA

机构：

[1] Department of Mechanical Engineering, The University of Calgary, Calgary, AB

来源：

JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME | 1994年 / 116卷 / 03期

关键词：

D O I：

10.1115/1.2906443

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The transient processes of droplet heating, vaporization and ignition in a quiescent heated environment of a homogeneous mixture of air and fuel that is potentially combustible are analyzed. A system of partial differential equations that governs this hybrid diffusional-premixed processes is presented. The equations were solved numerically for an n-heptane droplet vaporizing in a homogeneous environment of methane and air. The effective reaction rate of the oxidation processes was assumed throughout to equal the sum of the reaction rates due to droplet and auxillary fuels. The gross reaction rates used in the model for the droplet and auxiliary fuels were obtained from curve fitting of reaction rates results obtained from detailed chemical kinetics for the two fuels system. It is to be shown, for example, that the presence of an auxiliary fuel with the air in the surrounding environment of the droplet enhances the rates of the ignition/combustion processes of the droplet.

引用

页码：194 / 200

页数：7

共 23 条

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