Experimental study of hydraulic flip phenomenon inside diesel nozzles using diesel and biodiesel
As cavitation inside diesel nozzles can improve the spray characteristics, it has long been a hot issue.And together with the increasing attention of biodiesel, it is essential to identify the difference of cavitating flow characteristics between diesel and biodiesel.What”s more, the hydraulic flip phenomenon and cavitating flow with decreasing injection pressure hasn”t been studied.Based on this, cavitating flow inside transparent nozzles of diesel and biodiesel fuels with increasing and decreasing injection pressure was investigated in this paper.Experimental results showed that are quite different from the disappearance of it and it is harder to disappear.Biodiesel and longer nozzle orifices were hard for the hydraulic flip phenomenon to occur, and the disappearance of hydraulic flip phenomenon has great influence on the spray cone angle and the discharge coefficient.
diesel nozzle cavitating flow hydraulic flip biodiesel visual experiment
Zhuang Shao Zhixia He Wenjun Zhong Liang Zhang
School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013 Jiangsu Province, China
国内会议
上海
英文
76-79
2014-04-23（万方平台首次上网日期，不代表论文的发表时间）