610 直接数値計算による乱流予混合火炎の解明(O.S.6-3 燃焼の数値計算2)(オーガナイズドセッション6 熱流体・燃焼の数値計算)

概要

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Direct numerical simulation of a turbulent premixed flame with single-step irreversible Arrhenius-type reaction is performed in order to evaluate turbulent transport properties. Because of reducing Reynolds number of inflowing turbulence, the calculation became stable and developed. The increase of the streamwise component of velocity fluctuation results in the increase of turbulent kinetic energy in the flame region. The x-component of velocity fluctuation increased twice as much as y, z-component. The mean pressure gradient term and the pressure work term in Favre averaged transport equation have an important role in production of turbulence. But in this case the mean pressure has fluctuation, so the effect of the pressure to turbulent kinetic energy couldn't be declared.
社団法人日本機械学会の論文
2000-03-10