圧縮行程中のシリンダ内乱れの減衰と生成に及ぼすスワールの影響 : 空間相関法による乱れスケールのLDV測定

概要

論文の詳細を見る
The lateral turbulence integral length scales of the axial and tangential velocity components were measured using a two-point, single-probe-Volume, laser Doppler velocimetry system in a motored single-cylinder internal combustion engine. The measurements were carried out on an axisymmetric transparent cylinder engine with a pancake-shaped chamber during the period spanning the intake and expansion strokes at an engine speed of 320rpm for three different swirl ratios. The results obtained for this engine indicate that in the case of no swirl, the turbulence intensity and the integral length scale decrease monotonously from compression stroke to expansion stroke, while in the presence of swirl, they happen to increase during the compression stroke as affected by the vortex ring.
社団法人日本機械学会の論文
1990-10-25