多孔介质的热物性对往复流动下超绝热火焰的影响  

The Influence of the Thermophysical Properties of Porous Media on a Superadiabatic Flame under the Condition of Reciprocating Flows

作　　者：杜礼明[1] 解茂昭[2] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]大连理工大学动力工程系,辽宁大连116024

出　　处：《热能动力工程》2005年第2期148-152,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(50076005)

摘　　要：多孔介质燃烧室的传热性能主要取决于多孔介质材料的热物性,本文在气固两相局部非热平衡假设基础上,建立往复式流动下多孔介质超绝热燃烧的二维数学模型,研究了多孔介质的比热、导热系数、衰减系数和体积换热系数等对温度分布和燃烧速率的影响,以期为多孔介质选材和往复流动下多孔介质超绝热燃烧器的优化设计提供理论依据。The heat transfer properties of a porous media combustor mainly depend on the thermophysical properties of a porous-media material. Based on the hypothesis of local thermal non-equilibrium between the solid and gas phases the authors have set up a two-dimensional mathematical model for porous-media superadiabatic combustion under the condition of reciprocating flows. The influence of the porous-media specific heat, heat conductivity, dissipation factor and volume heat-exchange factor, etc on temperature distribution and combustion rate was studied in order to provide a theoretical basis for the selection of porous-media materials and the optimized design of a reciprocating-flow porous-media superadiabatic combustor.

关 键 词：多孔介质 超绝热燃烧 往复流动 热物性参数 

分 类 号：TK124[动力工程及工程热物理—工程热物理]