Investigation of the effect of DC electric field on a small ethanol diffusion flame

FUEL

卷:188

Article

Luo, Yanlai¹  Gan, Yunhua¹  Jiang, Xi² 

[1] South China Univ Technol, Sch Elect Power, Wushan Rd, Guangzhou 510640, Guangdong, Peoples R China

[2] Univ Lancaster, Dept Engn, Lancaster LA1 4YR, England

关键词: Ethanol-air flame;    DC electric field;    Micro-combustion;    Numerical analysis;    Flame deformation;   

DOI  :  10.1016/j.fuel.2016.10.073

来源: Elsevier

【 摘 要 】

A small ethanol diffusion flame exhibited interesting characteristics under a DC electric field. A numerical study has been performed to elucidate the experimental observations. The flow velocity, chemical reaction rate, species mass fraction distribution, flame deformation and temperature of the flame in the applied DC electric field were considered. The results show that the applied electric field changes the flame characteristics mainly due to the body forces acting on charged particles in the electric field. The charged particles are accelerated in the applied electric field, resulting in the flow velocity increase. The effects on the species distribution are also discussed. It was found that the applied electric field promotes the fuel/oxidizer mixing, thereby enhancing the combustion process and leading to higher flame temperature. Flame becomes shorter with applied electric field and its deformation is related to the electric field strength. The study showed that it is feasible to use an applied DC electric field to control combustion and flame in small-scale. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

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