COUNTER-GRADIENT SCALAR TRANSPORT IN LARGE EDDY SIMULATION OF TURBULENT PREMIXED FLAMES

机译：湍流预混火焰大涡模拟中的反梯度标量运输

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Counter-gradient transport is examined in a, priori large eddy simulations of turbulent premixed combustion using direct numerical simulations (DNS) of 3D planar flames. It is found that the size of the LES filter, and consequent resolution of the flame, have an important effect on the scalar flux and that this can be considered explicitly by decomposing the flux into flame interior and non-reacting components. The LES form of a scalar flux transport equation was written and models developed for the two main counter-gradient terms, the pressure gradient and velocity-reaction rate correlation.

机译：使用3D平面火焰的直接数值模拟（DNS），在湍流预混燃烧的先验大型涡模拟中检查了反梯度传输。发现LES过滤器的尺寸以及随之而来的火焰分辨率对标量通量具有重要影响，可以通过将通量分解为火焰内部和未反应的成分来明确考虑这一点。编写了标量通量传输方程的LES形式，并针对两个主要反梯度项（压力梯度和速度反应速率相关性）开发了模型。

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来源
《IUTAM Symposium on Turbulent Mixing and Combustion, Jun 3-6, 2001, Kingston, Ontario, Canada》|2001年|p.259-267|共9页
会议地点 Kingston(CA)
作者
S. Tullis; R.S. Cant;
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作者单位

CFD Laboratory, Department of Engineering, Cambridge University, Cambridge, CB2 1PZ, U.K.;

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会议组织
原文格式 PDF
正文语种 eng
中图分类力学;
关键词
turbulent premixed combustion; scalar flux; large eddy simulation;

机译：湍流预混燃烧；标量通量大涡模拟;

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1. Scalar Dissipation Rate Transport in the Context of Large Eddy Simulations for Turbulent Premixed Flames with Non-Unity Lewis Number [J] . Y. Gao, N. Chakraborty, N. Swaminathan Flow, turbulence and combustion . 2014,第3期

机译：非均匀路易斯数湍流预混火焰大涡模拟中的标量耗散率传输
2. GRADIENT AND COUNTER-GRADIENT SCALAR TRANSPORT IN TURBULENT PREMIXED FLAMES [J] . Veynante D., Bray KNC., Mantel T., Journal of Fluid Mechanics . 1997,第0期

机译：湍流预混合火焰中的梯度和反梯度标量运输
3. Impact of Turbulent Flow and Mean Mixture Fraction Results on Mixing Model Behavior in Transported Scalar PDF Simulations of Turbulent Non-premixed Bluff Body Flames [J] . Bart Merci, Bertrand Naud, Dirk Roekaerts Flow, Turbulence and Combustion . 2007,第1期

机译：湍流和平均混合分数结果对运输标量中混合模型行为的影响PDF非湍流非预混钝体火焰的PDF模拟
4. COUNTER-GRADIENT SCALAR TRANSPORT IN LARGE EDDY SIMULATION OF TURBULENT PREMIXED FLAMES [C] . S. Tullis, R.S. Cant IUTAM Symposium on Turbulent Mixing and Combustion . 2002

机译：湍流预混火焰大型涡流模拟中的反梯度标量传输
5. A computational study of turbulent premixed flames including direct numerical and large-eddy simulations. [D] . Ravi, Ohmsatya Prasad. 1998

机译：湍流预混火焰的计算研究，包括直接数值模拟和大涡模拟。
6. Large Eddy Simulation of a Bluff Body Stabilised Premixed Flame Using Flamelets [O] . James C. Massey, Ivan Langella, Nedunchezhian Swaminathan -1

机译：利用小火焰对钝态稳定的预混火焰进行大涡模拟
7. Impact of Turbulent Flow and Mean Mixture Fraction Results on Mixing Model Behavior in Transported Scalar PDF Simulations of Turbulent Non-premixed Bluff Body Flames [O] . Bart Merci, Bertrand Naud, Dirk Roekaerts 2007

机译：湍流和平均混合级分的影响结果对湍流非预混弱小体火焰输送标量PDF模拟混合模型行为的影响

COUNTER-GRADIENT SCALAR TRANSPORT IN LARGE EDDY SIMULATION OF TURBULENT PREMIXED FLAMES

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