ユニフロー掃気二サイクルディーゼルエンジンの圧縮時掃気流動特性 : 第2報,数値シミュレーション

概要

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The swirl flow at a compression stroke in a cylinder of the two-stroke-cycle uniflow scavenging diesel engine plays a very important role in the combustion performance. In this report, the numerical analysis method of the gas flow in a cylinder at the compression stroke is developed. This method is proceeded by and approximation of a 2-D axisymmetrical flow to save computation time, but uses, for the initial condition, the calculated results of a 3-D scavenging flow simulation to ensure the accuracy of the starting swirl flow pattern which is deeply affected by the port arrangement. Some calculated results are compared with the experimental data of a model engine, and it is concluded that this method can simulate the flow pattern in s cylinder at the compression stroke with good accuracy.
社団法人日本機械学会の論文
1989-03-25