Influence of Flow Swirling on the Aerothermodynamic Behaviour of Flames

被引：2
|
作者：
Parra-Santos, M. T. [1 ]
Mendoza-Garcia, V. [2 ]
Szasz, R. [3 ]
Gutkowski, A. N. [4 ]
Castro-Ruiz, F. [1 ]
机构：
[1] Univ Valladolid, E-47011 Valladolid, Spain
[2] Univ Tarapaca, Arica 100007, Chile
[3] Lund Univ, S-22100 Lund, Sweden
[4] Lodz Univ Technol, PL-90924 Lodz, Poland
来源：
COMBUSTION EXPLOSION AND SHOCK WAVES | 2015年 / 51卷 / 04期
关键词：
reactive flow; recirculation zone; CFD; swirling flows; stretched flames; SIMULATION; BURNER;
D O I：
10.1134/S0010508215040048
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present work focuses on the numerical simulation of diffusive flames in a confined high-swirl burner. Navier-Stokes equations expressed for a time-dependent, compressible, and three-dimensional flow with finite-rate kinetics are solved for lean methane/air mixtures. A simplified mechanism is used to model the combustion. Non-reactive and reactive cases are contrasted for a swirl number of 0.95. Three flames for swirl numbers of 0, 0.6, and 0.95 are analyzed. In swirling flows, the inner recirculation zone is mainly composed of reaction products, which help in ignition of the incoming fuel. Moreover, the forward stagnation point plays an important role, leading to an azimuthal deflection of the flame front.
引用
收藏
页码：424 / 430
页数：7
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