摘要
本文采用K-ε双方程湍流模型对正交射流煤粉燃烧器出口三维湍回流流动进行了数值研究,得到了副射流与主流速度比为2.5时的正交射流尾迹流场的速度分布、回流特性,并比较了不同速度比时的流场计算结果。计算结果与实测数据符合较好,所得结论对分析正交射流燃烧器的稳燃机理具有一定作用。
A numerical modelling of the three--dimensional turbulentflow in the pulverized coal burner of jet in a crossflow is describedwith the k-ε two eguation model.The three velocity components,therecirculation characteristics in the burner are obtained for iet-to-cross-flow velocity ratio R equals 2.5.The calculation results for changedR are also compared with each other.And the predictions of velocitycomponents are in reasonable qualitativc agreement with experimentaldata.
出处
《空气动力学学报》
CSCD
北大核心
1994年第1期82-86,共5页
Acta Aerodynamica Sinica
基金
国家自然科学基金和国家攀登计划资助项目
关键词
湍流
正交射流
煤粉燃烧器
turbulent flow,crossflow,pulverized coal burner,numer-ical modelling.