多孔介质往复流动燃烧的一维数值模拟  

One-dimensional Numerical Simulation of Reciprocating-flow Combustion in Porous Media

作　　者：马世虎[1] 解茂昭[1] 邓洋波[1] 

机构地区：[1]大连理工大学动力系,辽宁大连116024

出　　处：《热能动力工程》2004年第4期384-388,共5页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金资助项目 ( 5 0 0 760 0 5 )

摘　　要：建立了往复流动多孔介质燃烧器的一维数学模型 ;在该系统中 ,可燃预混气周期性换向 ,分别从两端流入燃烧器。假定气相与固相处于局部热平衡状态 ,考虑了辐射换热的影响。采用有限容积法求解 ,通过大量数值计算研究了主要工况参数 ,如半周期、流速、当量比、热损失、多孔介质衰减系数及其热容对该燃烧系统温度分布和反应特性的影响。A one-dimensional mathematical model was set up to simulate the reciprocating-flow combustion in porous media. In this system combustible premixed gases change their direction periodically, and flow into a combustor from two ends. It is assumed that gas phase and solid phase exist in a state of local thermal equilibrium and the influence of radiation heat exchange has also been taken into account. A mathematical solution is obtained by using a finite volume scheme. By way of a huge quantity of numerical calculations investigated was the impact of major operating parameters on the temperature distribution and reaction characteristics of the combustion system. As for such parameters one can list: half cycle, flow speed, equivalence ratio, heat losses, attenuation factor of porous media and their heat capacity. The calculation results are qualitatively in fairly good agreement with experimental results.

关 键 词：多孔介质 往复流动 超绝热燃烧 

分 类 号：O643.2[理学—物理化学]