脉动燃烧器内流场的数值模拟  

Numerical Simulation of Self-oscillated Flows in Tubes

作　　者：严红[1] 陈福连[2] 吴心平[2] 

机构地区：[1]清华大学工程力学系,北京100084 [2]浙江工业大学机电工程学院,杭州310014

出　　处：《燃烧科学与技术》2001年第2期203-207,共5页Journal of Combustion Science and Technology

摘　　要：建立了 Rijke型脉动燃烧器内自激脉动流动的数学模型 ,并采用 TVD格式求解了二维非稳态可压流 N- S方程 ,讨论了加热量对脉动流动及对流传热过程的影响。认为速度脉动幅度对对流传热系数的影响比较大 ,在脉动速度分量波动较大的地方 ,对流传热系数增加的幅度加大。证明了在A numerical model is proposed for self oscillated flows in Rijke type pulsating combustors.TVD schemes are utilized to solve the two dimensional unsteady N S equations of compressible flows.The effects of the energy release on pulsating flows and heat transfer processes are considered.Amplitudes of pulsating velocities have been found to play an important role in convective heat transfer enhancement,which is improved owing to larger amplitudes of the pulsating velocities.The results suggest that self oscillated flows in Rijke type combustors enhance the convective heat transfer rates.

关 键 词：流场 数值模拟 传热过程 脉冲燃烧器 

分 类 号：TK124[动力工程及工程热物理—工程热物理]