摘要
本文应用周培源的理论,给出了不可压缩平面湍流混合层的一级近似解,我们考虑连续性方程,平均运动方程和二阶脉动速度关联方程,忽略二阶脉动速度关联方程中的三阶关联项,并引进自模拟假设,得到了和实验符合的平均速度,二阶脉动速度关联项和湍流微尺度等的理论计算结果。
In this paper, the first approximation solutions of the incompressible plane turbulent mixing layer using the theories of Chou Peiyuanhave been given. We consi-der the continuity equation, the mean motion equations and the equations of the double velocity correlations, and ignore the triple velocity correlations of the double velocity correlation equations. We introduce the hypothesis of the self-preservation, and have gotten the theoretical results of the mean velocities, the double velocity correlations and the turbulent micro-scale, etc. They are identical with the experimental results.
出处
《力学学报》
EI
CSCD
北大核心
1990年第1期1-8,共8页
Chinese Journal of Theoretical and Applied Mechanics
关键词
湍流
平面
混合层
准相似性
自模似
pseudo-simila.tity, self-preservation, turbulent micro-scale, double velocity correlation
