有辐射热损射流扩散火焰条件矩模型数值模拟  

Simulation of Conditional Moment Closure Model of CH_4-Air JetDiffusion Flame with Radiant Heat Losses

作　　者：邹春[1] 郑楚光[1] 周力行[2] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074 [2]清华大学力学系煤的清洁燃烧国家重点实验室,北京100081

出　　处：《燃烧科学与技术》2002年第5期472-477,共6页Journal of Combustion Science and Technology

基　　金：国家重大基础研究发展规划资助项目。

摘　　要：假设火焰辐射区域为光学薄,将辐射计算的代数模型嵌入到条件矩模型中(CMC(rad)),对甲烷 空气射流扩散值班火焰进行了模拟。并将此模型的模拟结果分别与实验和未考虑辐射热损的条件矩模型(CMC(ad))的结果进行了比较。结果表明采用代数模型计算辐射热损失是合适的,且考虑辐射的条件矩模型对温度场和NO的浓度的模拟结果相比未考虑辐射热损条件矩模型的模拟结果,与实验结果符合得要好。Under the assumption of optical thin in radiating flame zones,the simulation for CH4Air jet diffusion piloted flame was carried out by embedding the algebraic model of radiation calculation in conditional closure moment model(CMC(rad)).The results of this model (CMC(rad))were compared with that of experiment and conditional closure moment without radiation calculation(CMC(ad)) separately.It demonstrated that algebraic model using for calculation of radiant heat losses was reasonable,and the agreement of predictions of temperature and NO of CMC(rad)and experiment was more satisfactory than CMC(ad).

关 键 词：矩模型 辐射热损失 条件矩 扩散火焰 数值模拟 湍流反应流 

分 类 号：O643.21[理学—物理化学]