CLOSURE OF THE TRANSPORT-EQUATION FOR THE PROBABILITY DENSITY-FUNCTION OF TURBULENT SCALAR FIELDS

被引：304

作者：

JANICKA, J ^{[1
]}

KOLBE, W ^{[1
]}

KOLLMANN, W ^{[1
]}

机构：

[1] VON KARMAN INST FLUID DYNAM,B-1640 RHODE ST GENESE,BELGIUM

来源：

JOURNAL OF NON-EQUILIBRIUM THERMODYNAMICS | 1979年 / 4卷 / 01期

关键词：

D O I：

10.1515/jnet.1979.4.1.47

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The transport equation for the probability density function (pdf)P of a scalar variable in a turbulent field is derived and various closure approximations for the turbulent convective and the molecular transport term are discussed. For the special case of a turbulent diffusion flame, for which the density, temperature and composition can be considered as a function of a scalar variable f, the transport equation for Pf (z) is closed using the conditional mean of the velocity for the turbulent convective term and an integral model for the molecular transport term. Preliminary results are presented and compared with a two-parameter form of the pdf Pf (z). © Copyright by Walter de Gruyter & Co.

引用

页码：47 / 66

页数：20

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