137 高分解能PIVによる筒内乱流の空間的評価
1997 年 17 巻 Supplement1 号 p. 153-156
詳細
1997 年 17 巻 Supplement1 号 p. 153-156
Two-color dual sweep PIV has. been used in an engine to obtain quasi-instantaneous two-dimensional velocity data. The particle-seeded flow field was illuminated by scanning beams(blue and green) of Ar laser. The illuminated particles were photographed at TDC compression with 1.7×magnification, resulting in paired particle images distinguished by color. In this way, this PIV succeeded to evaluate complex turbulence flow including counter current like tumbling flow, and also the spatial resolution achieved was adequate to resolve the few-mm turbulence integral length scales.
