Combustion of Bimodal Nano/Micro Aluminum Suspension with New Reaction Rate Model| Science Publications

American Journal of Engineering and Applied Sciences

N. Moallemi¹  M. Bidabadi¹  I.. Shafieenejad¹  M. Jadidi¹ 

关键词: Dust combustion;    binary suspension;    heat loss;    flame speed;    reaction rate;   

DOI  :  10.3844/ajeassp.2008.295.301

学科分类：工程和技术（综合）

来源: Science Publications

【 摘 要 】

In this study a mathematical model for combustion of bimodal particle in lean flow was developed. The difference between structure of flame in this work and previous ones was that, in those flame was divided by five zones and reaction rate was considered to be constant in reaction zones and also zero in post flame zone. In reality it was obvious with respect to shape and size of different particles in dust, reaction didn't end suddenly. In the present research the heat loss term, which was assumed to be linearly proportional to temperature difference, was added to the energy conservation equation and reaction rate was considered proportional to available amount of fuel, leading to exponentially decreasing of reaction rate. The flame speed and temperature distribution were obtained by solving the energy equation in each zone and matching the temperature and heat flux at the interfacial boundaries. Calculated values of flame speed were in good agreement with experimental data.

【 授权许可】

Unknown