Abstract: Numerical computation of three-dimensional flow fields within forced mixer lobe basing on the body-fitted coordinate system was conducted in order to elucidate the flow processes and the underlying effects of the lobe primary parameters,such as the lobe height and length,on the circulation and total pressure recovery coefficient at the lobe trailing exit.The results give us further recognition on the feature of the forced mixer lobe.

Key words: Computational fluid dynamics;Forced mixer lobe;Nozzle;Three dimensional flow;Numerical calculation

摘要： 为了获得波瓣混合结构的主要几何参数对性能的影响规律 ,采用贴体曲线坐标系和k ε两方程紊流模型进行了三维流场的数值研究。通过对波瓣混合结构的流场分析 ,得到了波瓣尾缘速度环量和总压恢复系数随波瓣瓣高和瓣长的变化关系。在波瓣的结构参数中 ,瓣高的影响更为显著。

关键词: 计算流体动力学;强迫混合波瓣;喷管;三维流;数值计算