An aerosol rapid compression machine for studying energetic-nanoparticle-enhanced combustion of liquid fuels

被引：136

作者：

Allen, Casey ^{[1
]}

Mittal, Gaurav ^{[2
]}

Sung, Chih-Jen ^{[3
]}

Toulson, Elisa ^{[1
]}

Lee, Tonghun ^{[1
]}

机构：

[1] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA

[2] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA

[3] Univ Connecticut, Dept Mech Engn, Storrs, CT 06269 USA

来源：

PROCEEDINGS OF THE COMBUSTION INSTITUTE | 2011年 / 33卷

关键词：

Autoignition; Energetically-enhanced combustion; Nanoparticle; Ethanol; JP-8; CHEMICAL KINETIC-MODEL; SURROGATE MIXTURES; IGNITION; TEMPERATURE; JP-8; OXIDATION;

D O I：

10.1016/j.proci.2010.06.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The use of energetic nanoparticles offers a promising means of adjusting the reactivity of liquid fuels for enhanced combustion stability in next generation propulsion systems. This work outlines the development of a novel aerosol rapid compression machine (RCM) for studying the impact of energetic nanoparticles on reducing the ignition delay of liquid fuels, and a proof-of-concept demonstration is presented using ethanol and JP-8. Fuel droplets are generated using an ultrasonic nozzle. The seeding of 50 nm aluminum nanoparticles in the liquid fuel is achieved by using a combination of chemical surfactants in addition to mixing in an ultrasonic bath. The autoignition delay is measured for neat and nanoparticle-enhanced mixtures at compressed conditions of 772-830 K and 12-28 bar in the RCM. The results show that significant changes in the ignition delay can be observed using a low concentration (2%-weight) of energetic nanoparticles. For ethanol and JP-8, ignition delays were reduced by 32% and 50%, respectively. Measurements to verify the uniformity of aerosol dispersion in the RCM, the reproducibility of the RCM data, and a method for approximating compressed temperature are also presented. (C) 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：3367 / 3374

页数：8

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