| Biography | |
|---|---|
 Prof. Hong Liu Dalian University of Technology, China |
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| Title: Effect of ethanol additive within water droplet on impact dynamics and evaporation on a heated surface | |
| Abstract: The hydrodynamics and evaporation of droplets after impacting the heated red copper surface have been studied experimentally. Apart from the ambient temperature of 18.5 °C, the surface has been heated to 50 °C, 75 °C, 100 °C, respectively. By injecting ethanol with the volume faction of 2%, 4%, 6%, 8% into pure water droplets, the surface wettability which is quantified with the maximum wetting diameter was changed. With the side-view images and bird’s-view-images captured by a high-speed camera, the deformations of mixed droplets including impact, spread, constriction and oscillation, were observed and compared with the pure water droplet. Thereafter the effect of wettability has been investigated by analyzing the evaporation duration of droplets. Finally it is concluded that preferable wettability will improve the heat transfer from surface to droplets. | |
| Biography: Hong Liu, the associate professor and doctoral supervisor of the School of Energy and Power Engineering, Dalian University of Technology. Mainly concentrated on the researches of spray cooling, liquid fuel spray and heat transfer characteristics. Liu has published 48 papers, including 31 SCIs; 22 TOP journals; and 28 EI in the past five years, meanwhile, undertaking multiple investigation projects including the National Natural Science Foundation of China. | |
