4727 高温高密度場に形成されるディーゼル噴霧のLarge Eddy Simulation(S55-1 エンジン現象解析-基礎計測と数値計算-(1),S55 エンジン現象解析-基礎計測と数値計算-)

概要

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Evaporative diesel spray simulations using Large Eddy Simulation (LES) are developed to predict the heterogeneous structure in the diesel spray. KIVALES, which is LES version of KIVA3V res.2 code, is used as the base code. The SGS stress model is k-Δ model and gradient diffusion model is applied for the scalar transportation. To advective terms, interpolated donor cell differencing scheme is used and break up is taken into account for modified Tab model. The computational grid used is a finer computational grid of 720,000 cells. As a result, LES can capture the instantaneous 3-D flow field with coherent vortices, and good agreement between LES and experimental results is observed in the intermittency at the spray periphery, liquid length and vapor length.
社団法人日本機械学会の論文
2006-09-15