摘要
将能量最小多尺度(EMMS)模型拓展到圆射流的研究.利用圆射流的稳定性条件,预测圆射流的流速分布.分析表明,湍流圆射流的速度分布指数为1.94.通过与实验结果的对比分析,EMMS模型的平均误差和最大误差分别是-0.69%和-10.57%,低于传统的Gauss分布解、Tollmien解和G?rtler解.
The energy minimization multi-scale(EMMS)model was applied to the round jet.The stability condition of the round jet was adopted to predict the velocity distribution of the turbulence circular jet.Studies show that the velocity distribution indice of the turbulent round jet is 1.94.The velocity distributions predicted by the EMMS model give a maximum deviation of-10.57% and a mean deviation of-0.69% compared with the published experimental data,which is lower than those obtained by the Gauss distribution,Tollmien and G?rtler solution.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2016年第8期1259-1263,共5页
Journal of Shanghai Jiaotong University
基金
上海市科学技术委员会科技支撑计划项目(13dz1203002)资助
关键词
能量最小多尺度
圆射流
湍流
速度分布
耗散
energy-minimization multi-scale
round jet
turbulence
velocity distribution
dissipation