LINEAR-EDDY MODELING OF TURBULENT TRANSPORT .3. MIXING AND DIFFERENTIAL MOLECULAR-DIFFUSION IN ROUND JETS

被引：83

作者：

KERSTEIN, AR

机构：

[1] Combustion Research Facility, Sandia National Laboratories, Livermore

来源：

JOURNAL OF FLUID MECHANICS | 1990年 / 216卷

关键词：

D O I：

10.1017/S0022112090000489

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The linear-eddy model of turbulent mixing represents a spatially developing flow by simulating the time development along a comoving transverse line. Along this line, scalar quantities evolve by molecular diffusion and by randomly occurring spatial rearrangements, representing turbulent convection. The modelling approach, previously applied to homogeneous turbulence and to planar shear layers, is generalized to axisymmetric flows. This formulation captures many features of jet mixing, including differential molecular diffusion effects. A novel experiment involving two unmixed species in the nozzle fluid is proposed and analysed. © 1990, Cambridge University Press. All rights reserved.

引用

页码：411 / 435

页数：25

共 37 条

[1] CONDITIONALLY SAMPLED MEASUREMENTS IN A HEATED TURBULENT JET [J].