摘要
采用k方程亚网格尺度模型对模型加力燃烧室的污染特性进行大涡模拟研究,其中污染物CO亚网格尺度模型是以二步化学反应为基础,NO采用亚网格动力学模型,并用亚网格EBU燃烧模型估算化学反应速率,用热通量辐射模型估算辐射通量,通过数值计算结果与实验数据的比较,表明采用的亚网格污染物生成模型可以用于实际加力燃烧室污染物排放的预估.
The k-equation subgrid-scale model is used for large-eddy simulation (LES) of the pollutant performance in the model afterburner with V-gutter flame stabilizer. A two-step turbulent combustion subgrid-scale model is employed for calculating CO concentration. The NO subgrid-scale pollutant formation model is applied to the evaluation of the rate of NO formation. The EBU combustion subgrid-scale model is used to determine the chemical reaction rate. The heat flux model is applied to prediction of the heat flux. Agreement between the predictions and experiments shows that pollution formation subgrid-scale models can be used to predict pollutant emissions in an afterburner.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2005年第1期68-72,共5页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(50176017).
关键词
加力燃烧室
大涡模拟
亚网格尺度模型
污染物生成模型
Air pollution
Carbon monoxide
Combustion
Engines
Environmental engineering
Gas emissions
Mathematical models
Nitrogen oxides
