Subgrid Linear Eddy Mixing and Combustion Modelling of a Turbulent Nonpremixed Piloted Jet Flame

被引：7
|
作者：
Salvador Ochoa, Jose [1 ,2 ]
Sanchez-Insa, Alberto [1 ,2 ]
Fueyo, Norberto [1 ,2 ]
机构：
[1] Univ Zaragoza, Fluid Mech Grp, Zaragoza 50018, Spain
[2] LITEC CSIC, Zaragoza 50018, Spain
来源：
FLOW TURBULENCE AND COMBUSTION | 2012年 / 89卷 / 02期
关键词：
LES; LEM; Nonpremixed flame; Scalar dissipation; Subgrid modelling; PREMIXED FLAMES; SCALAR DISSIPATION; DIFFUSION FLAME; SIMULATION; CHEMISTRY; TRANSPORT; REGIME; LES; GENERATION; FLOWS;
D O I：
10.1007/s10494-011-9371-y
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A linear eddy model for subgrid mixing and combustion has been coupled to a large eddy simulation of the turbulent nonpremixed piloted jet flame (Sandia Flame D). For the combustion reaction, simplified, single-step, irreversible, Arrhenius kinetics are used. The large scale and the subgrid structure of the flow are compared with experimental observations and, where appropriate, with a flamelet model of the flame. The main objective of this work is to demonstrate the feasibility of the LES-LEM approach for determining the structure of the subgrid scalar dissipation rate and the turbulence-chemistry interactions. The results for the large- and subgrid-scale structure of the flow show a reasonable agreement with the experimental observations.
引用
收藏
页码：295 / 309
页数：15
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