1936 レイノルズ応力モデルに基づくPDF/モーメント組合せ法による乱流拡散火炎の数値解析(G06-8 燃焼(4),G06 熱工学)

概要

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The present work investigates the effectiveness of Reynolds stress model in a combined probability density function (PDF)/moment method through a comparison with a standard k-ε model in the configuration of turbulence nonpremixed flame. The second moment closure was employed to analyze the flow field where turbulence model equations used are Reynolds stress equations and a scalar flux equation. The combined PDF/Moment method was applied to analyze the scalar field. The target flame of the present study is H3Flame which is a jet nonpremixed flame formed on a fuel nozzle surrounded by an air coflow. Fuel is H_2/N_2. Experimental data obtained by Dreizler et al. was used for the evaluation. The analysis by the PDF/Moment Combined method based on the Reynolds stress model has indicated very good prediction of mean axial velocity. It is based that the Reynolds stress model takes into account the anisotropy of velocity variance. The scalar filed also has been improved.
社団法人日本機械学会の論文
2007-09-07