THERMAL TRANSPORT PHENOMENA OF TURBULENT JET DIFFUSION FLAMES BY MEANS OF ANISOTROPIC k-ε--t_2--ε_t MODEL

SHUICHI TORII

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THERMAL TRANSPORT PHENOMENA OF TURBULENT JET DIFFUSION FLAMES BY MEANS OF ANISOTROPIC k-ε--t_2--ε_t MODEL

机译：用各向异性k-ε--t_2-ε_t模型研究湍流射流扩散火焰的热传输现象。

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A numerical study is performed on transport phenomena in a tufbulent jet diffosion flame of hydrogen from a vertical circular nozzle. An anisotropic k-ε--t_2--ε_t , model and the eddy-dissipation model are employed to simulate thermal fluid flow and combustion phenomena, respectively. The governing boundary-layer equations are discretized by means of a control volume finite-difference technique and are numerically solved. The model predicts the experimental data in the existing literature. It is found from the study that (i) the model employed here can be applied to combustion phenomenon, and (ii) the presence of flame enhances the anisotropy of turbulence and causes a substantial attenuation in the turbulent kinetic energy, that is, most turbulent kinetic energy in the flame in the downstream part is laden exclusively in the streamwise fluctuation.

机译：对来自垂直圆形喷嘴的氢的湍流射流扩散火焰中的传输现象进行了数值研究。采用各向异性的k-ε--t_2--ε_t模型和涡耗散模型分别模拟了热流体的流动和燃烧现象。控制边界层方程通过控制体积有限差分技术离散化并进行数值求解。该模型可以预测现有文献中的实验数据。从研究中发现，（i）此处采用的模型可以应用于燃烧现象，并且（ii）火焰的存在会增强湍流的各向异性，并导致湍流动能（即大多数湍流）显着衰减。下游部分的火焰中的动能仅在沿流方向的波动中负载。

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来源
《International Journal of Energy Research》 |1999年第11期|989-998|共10页
作者
SHUICHI TORII;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类一般性问题;
关键词
turbulent jet diffusion flame; anisotropic k-ε model; anisotropic t_2--ε_t; model; laminarization;

机译：湍流射流扩散火焰各向异性k-ε模型各向异性t_2--ε_t;模型;层化;

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7. Modeling of turbulent jet diffusion flames. 2nd report, Application of the modified .KAPPA.-.EPSILON. turbulence model to turbulent jet diffusion flames. [O] . Young Jae LEE, Yoshiaki ONUMA 1991

机译：湍流喷射扩散火焰的建模。第二次报告，修改后的.- .- .-。epsilon。湍流模型湍流喷射扩散火焰。

THERMAL TRANSPORT PHENOMENA OF TURBULENT JET DIFFUSION FLAMES BY MEANS OF ANISOTROPIC k-ε--t_2--ε_t MODEL

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