预混氢气层流燃烧速度的数值模拟  

Numerical Simulation for Laminar Burning Velocity of Premixed Hydrogen-Air Mixture

作　　者：孙柏刚[1] 赵建辉[1] 刘福水[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《燃烧科学与技术》2010年第5期430-435,共6页Journal of Combustion Science and Technology

基　　金：国家高技术研究发展计划(863)资助项目(2006AA11A1B6)

摘　　要：为探讨燃烧模型对预混氢气层流燃烧的适用性和使用方法,采用CFD仿真软件对氢气层流燃烧进行了数值模拟,通过校核与验证方法得到了当量比范围在0.5～1.2条件下正确计算氢气燃烧过程的网格尺寸为0.4 mm、时间步长为0.01 ms、收敛准则为10-4.应用TFSC燃烧模型的控制参数与温度、当量比的拟合关系获得的计算数据和试验数据具有较好的一致性.采用该方法可以正确计算常压下、温度范围300～900 K、当量比范围0.5～1.2的预混氢气层流燃烧速度,补充了高温条件下试验数据的不足.In order to investigate the adaptability of the combustion models to the laminar burning velocity of premixed hydrogen-air mixture,the numerical simulation of hydrogen laminar burning velocity has been conducted in this paper.First,it is verified and validated that at the equivalence ratio of 0.5 to 1.2,the mesh size is recommended to be 0.4 mm,the time step 0.01 ms and convergence criterion 10-4.Then,a good consistency between the calculation result and experiment data has been reached by adjusting the main parameters of the turbulent flame speed closure（TFSC）model at different temperature and different equivalence ratio.Finally,based on the simulation configuration,the laminar burning velocity of premixed hydrogen-air mixture can be correctly calculated equivalence ratio from 0.5 to 1.2,and in a normal pressure environment with the temperature between 300 K to 900 K,which can be used as reference data in a high temperature environ-ment.

关 键 词：氢气 层流燃烧速度 数值模拟 燃烧模型 

分 类 号：TK16[动力工程及工程热物理—热能工程]