摘要
本文应用ＶｏｎＭｉｓｅｓ变换对轴对称射流的各控制方程和相应的初始条件及边界条件进行了变换，选用普朗特混合长度湍流模型，用隐式有限差分格式进行数值求解，成功地计算了某型飞机在巡航状态下燃气由轴对称收缩喷管排入亚音速空气流中的速度场、温度场、浓度场、密度场以及燃气各组分的成分分布。计算结果可以用于预测飞机尾喷管高温燃气射流的红外辐射特性。
Abstract This paper presents an application of Von Mises transformation to all governing equations,initial conditions and boundary conditions in the axisymmetric jet.A Prandtle mixing length turbulent model and an implicit finite difference scheme have been employed,and solution of the equations describing axisymmetric jet has been obtained.The velocity field,temperature field,mass concentration field and density field of combustion gas jet of a typical aircraft at cruising conditions,and composition distribution of combustion gas components has been calculated succeessfully.The algorithm and calculation results could be used to predict the infrared radiant properties of high temperature aircraft nozzle jet.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1994年第1期86-88,共3页
Journal of Aerospace Power
