Morphological Development of Fuel Droplets after Impacting Biomimetic Structured Surfaces with Different Temperatures

作     者：Liang Guo Yuheng Gao Ningning Cai Degang Li Yuying Yan Wanchen Sun Liang Guo;Yuheng Gao;Ningning Cai;Degang Li;Yuying Yan;Wanchen Sun

作者机构：State Key Laboratory of Automotive Simulation and ControlJilin UniversityChangchun 130022China School of ManagementJilin UniversityChangchun 130022China Faculty of EngineeringUniversity of NottinghamNottingham NG72RDUK 

出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)

年 卷 期：2020年第17卷第4期

页      面：822-834页

核心收录：

学科分类：08[工学] 09[农学] 0901[农学-作物学] 0836[工学-生物工程] 090102[农学-作物遗传育种] 

基　　金：The authors gratefully acknowledge the financial supports from the National Natural Science Foundation of China(Nos.51676084 and 51776086) Specific Project of Industrial Technology Research&Development of Jilin Province(No.2020C025-2) Natural Science Foundation of Jilin Province(No.20180101059JC) 

主　　题：fuel droplets wettability dynamic contact angle rebound factor biomimetic 

摘      要：To improve the controllability for the evaporation process of fuel spray impinging on the cylinder wall,an experimental study on the development of morphological process of different fuel droplets on aluminium alloy surfaces is carried *** metal surfaces with different wettability are prepared by laser etching and chemical etching for the *** total,three different fuels are tested and compared under different surface temperatures,including diesel,n-butanol and dimethyl carbonate(DMC).The results show that under a lower wall temperature,the surface wettability,viscosity and surface tension of the fuels have significant effects on spreading and rebounding behaviour of the *** the wall temperature rises over the boiling points of the fuel but below its Leidenfrost temperature,the contact angles between the fuels and surfaces are varying according to the surface wettability,boiling point and Leidenfrost temperature of the *** the temperature of the surface exceeds the Leidenfrost temperature of all the fuels,after impacting the surfaces,different fuel droplets tend to have the same development pattern,regardless of the surface *** rebound level is mainly affected by the amount of fuel vapour generated during the wall-hitting ***,surface tension and other properties of the fuel have little effect on post-impacting behaviour of the droplet when the wall temperature is higher than the Leidenfrost temperature of the fuel.