Conditional Source-Term Estimation as a Method for Chemical Closure in Premixed Turbulent Reacting Flow

被引：56

作者：

Jin, B. ^{[1
]}

Grout, R. ^{[2
]}

Bushe, W. K. ^{[1
]}

机构：

[1] Univ British Columbia, Dept Mech Engn, Vancouver, BC V6T 1Z4, Canada

[2] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

来源：

FLOW TURBULENCE AND COMBUSTION | 2008年 / 81卷 / 04期

关键词：

Conditional source-term estimation; Premixed flames; Turbulent combustion;

D O I：

10.1007/s10494-008-9148-0

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A Conditional Source-term Estimation (CSE) model is used to close the mean reaction rates for a turbulent premixed flame. A product-based reaction progress variable is introduced as the conditioning variable for the CSE method. Different presumed probability density function (PDF) models are studied and a modified version of a laminar flame-based PDF model is proposed. Improved predictions of the variable distribution are obtained. The conditional means of reactive scalars are evaluated with CSE and compared to the direct numerical simulation (DNS). The mean reaction rates in a turbulent premixed flame are evaluated with the CSE model and the presumed PDFs. Comparison of the CSE closure method to DNS shows promising results.

引用

页码：563 / 582

页数：20

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