直喷式柴油机喷雾碰壁混合的三维数值模拟及实验研究  

Three-Dimensional Numerical Modeling and Experiment Study on Spray Wall Impingement in D.I.Diesel Engines

作　　者：贺萍[1] 

机构地区：[1]深圳职业技术学院,深圳518055

出　　处：《小型内燃机》2000年第3期12-15,24,共5页

摘　　要：本文介绍了利用气体流动和燃油喷雾混合的大型微机化软件包GFFSM进行的多种形态喷雾碰壁混合过程的三维数值模拟。为了验证理论工作的精度 ,进行了必要的实验研究。为此 ,作者自行研制了一台可加压、加温、可变涡流比 ,能做静、动态喷雾试验 ,流场试验 ,真空状态试验的定容压力室试验装置。The paper,adopting GFFSM software package,makes three-dimensional numerical modeling of impinging spray.The theoretical accuracy can only be justified through comparing the prediction value with the experimental results,so necessary experiments have been done.In the experiment designed to study the mixing feature of spray and air in the cylinder,diesel fuel oil is injected into a high pressure constant volume chamber where compressed air at room temperature is charged,and single spray is impinged on the wall.The growth of the spray is photographed by a high-speed camera.

关 键 词：直喷式柴油机 三维数值模拟 喷雾混合 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]