四サイクル機関の吸気弁孔流路内流れの予測 : 第3報,Porosity法適用による精度向上

概要

論文の詳細を見る
In order to improve the accuracy of the numerical prediction of gas flow in intake ports, a porosity approach has been applied to control volumes adjacent to walls. Numerical prediction of intake port flow has been carried out under steady flow conditions. By comparing the results of numerical predictions using the porosity approach with those using the previous approach of representing wall surfaces with staircaselike boundaries, it was confirmed that the accuracy of flow prediction was improved considerably by using the porosity approach. It has therefore become feasible to predict pressure losses in intake ports quantitatively. Consequently, an improvement in accuracy may be expected in the prediction of volumetric efficiency and swirl intensity under actual engine conditions by applying the porosity approach.
一般社団法人日本機械学会の論文
1989-10-25