【摘要】 通过改进KIVA－Ⅱ程序中的油滴破碎和喷雾碰壁两个子模型，在微机上对涡流室式柴油机燃油喷雾过程进行可视化研究。画出油滴运动轨迹和燃料蒸汽浓度的三视图，研究涡流室内油滴的运动过程和喷油对涡流室内速度场和温度场以及平均温度和平均压力的影响，计算结果与高速摄影结果[1]基本一致。更多还原

【Abstract】 The submodels of oil droplet breakup and spray impingement in KIVA-Ⅱcode are updated. The updated code is used to make visual study of spray process in a swirl chamber diesel engine. The three-dimensional pictures of oil droplet position and fuel isoconcentration contour are plotted. The process of oil droplet movement in the swirl chamber and the influences of fuel injection on velocity field,temperature field,mean temperature and mean pressure are studied. The results calculated are in good agreement with those of high speed photograph.更多还原