湍流对多孔介质内预混火焰影响的初步研究

工程热物理学报 , 2008, 29(11): 1961-1964.

1.中国科学技术大学热科学和能源工程系,安徽,合肥,230027

2.中国科学技术大学热科学和能源工程系,安徽,合肥,230027

3.中国科学技术大学热科学和能源工程系,安徽,合肥,230027

4.中国科学技术大学热科学和能源工程系,安徽,合肥,230027

基金项目: 国家高技术研究发展计划(863计划)(2007AA052236)

AN INITIAL STUDY OF THE TURBULENT EFFECTS ON THE PREMIXED FLAME IN POROUS MEDIA

当气流速度较大时,多孔介质内预混燃烧的模拟需要考虑湍流的影响,本文利用简化的k-ε双方程湍流反应流模型对多孔介质内的预混火焰进行了数值模拟.结果表明,湍流大大加强了气流的组分和能世扩散,计算得到的火焰传播速度、CO及NO的排放量都与实验值符合得比较好,与层流模型相比,湍流模型能够改善计算结果.

[1]	Fand R M;Kim B Y K;Lam A C C et al.Resistance to the Flow of Fluids Through Simple and Complex Porous Media Whose Matrices Are Composed of Randomly Packed Spheres[J].Journal of Fluids Engineering,Transactions of the ASME,1987,109:268-274.
[2]	A. Nakayama;F. Kuwahara .A macroscopic turbulence model for flow in a porous medium[J].Journal of Fluids Engineering: Transactions of the ASME,1999(2):427-433.
[3]	Pedras M H J;de Lemos M J S .On the Mathematical Description and Simulation of Turbulent Flow in a Porous Medium Formed by an Array of Elliptic Rod[J].Journal of Fluids Engineering,Transactions of the ASME,2001,123:941-947.
[4]	Kamal M M;Mohamad A A .Combustion in Porous Media[J].Journal of Power and Energy,2006,220:487-508.
[5]	Lim I G;Matthews R D .A Model for Turbulent Premixed Combustion Within Porous Inert Media[J].ASME Emerging Energy Technology,1993,50:85-94.
[6]	Marcos H. J. Pedras;Marcelo J. S. de Lemos .Macroscopic turbulence modeling for incompressible flow through undeformable porous media[J].International Journal of Heat and Mass Transfer,2001(6):1081-1093.
[7]	Kuwahara F;Nakayama A .Numerical Determination of Thermal Dispersion Coefficients Using a Periodic Porous Structure[J].ASME Journal of Heat Transfer,1999,121:160-163.
[8]	Chaflin C;Koenig M;Koeroghlian M M.Experimental Investigation of Premixed Combustion Within Highly Porous Media[A].Toronto,Canada,1991:219-224.
[9]	赵平辉;陈义良;刘明侯.多孔介质内预混燃烧的数值模拟[A].北京,2005:243-251.

上一张下一张

计量

作者相关

文章评分