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HU Liyuan; ZHOU Lixing; ZHANG Jian
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胡瓅元; 周力行; 张健
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Abstract: Turbulent swirling flows and methane-air swirling diffusion combustion are simulated by both large-eddy simulation (LES) using a Smagorinsky-Lilly subgrid-scale (SGS) turbulence model, a second-order moment (SOM) subgrid-scale combustion model and an eddy break up (EBU) combustion model and Reynolds-averaged NavierStokes (RANS) modeling using the Reynolds stress equation model and a second-order moment (SOM) combustion model. For swirling flows, the LES statistical results give better agreement with the experimental results than the RANS modeling, indicating that the adopted subgrid-scale turbulence model is suitable for swirling flows. For swirling combustion, both the proposed SOM SGS combustion model and the RANS-SOM model give the results in good agreement with the experimental results, but the LES-EBU modeling results are not in agreement with the experimental results.
Key words: swirling combustion, swirling flows, large-eddy simulation
摘要: Turbulent swirling flows and methane-air swirling diffusion combustion are simulated by both large-eddy simulation (LES) using a Smagorinsky-Lilly subgrid-scale (SGS) turbulence model, a second-order moment (SOM) subgrid-scale combustion model and an eddy break up (EBU) combustion model and Reynolds-averaged NavierStokes (RANS) modeling using the Reynolds stress equation model and a second-order moment (SOM) combustion model. For swirling flows, the LES statistical results give better agreement with the experimental results than the RANS modeling, indicating that the adopted subgrid-scale turbulence model is suitable for swirling flows. For swirling combustion, both the proposed SOM SGS combustion model and the RANS-SOM model give the results in good agreement with the experimental results, but the LES-EBU modeling results are not in agreement with the experimental results.
关键词: RANS LES;甲烷;燃烧方式;湍流;气粒子流
HU Liyuan, ZHOU Lixing, ZHANG Jian. Comparison Between LES and RANS Modeling of Turbulent Swirling Flows and Swirling Diffusion Combustion[J]. .
胡瓅元,周力行,张健. 旋流和旋流扩散燃烧的LES和RANS模拟[J]. CIESC Journal.
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https://hgxb.cip.com.cn/EN/Y2005/V13/I3/313