Hydrodynamics and Heat Transfer During Droplet Impingement on Nanostructured Surfaces
In this study we analysed the droplet shape and heat transfer during impact on three different surfaces of 6冚m thick copper foil: two coated with superhydrophobic and hydrophilic materials and one uncoated surface. The droplet temperature and the shape were measured simultaneously with high speed and thermal imaging cameras. Simulations using computational fluid dynamics (CFD) were then carried out to investigate the droplet shape and they were validated with the experimental results. Both the experimental and the simulation results of water droplet on a superhydrophobic surface show the complete droplet shapes (spreading, retracting, bouncing and oscillating) compared to the two other surfaces. The temperature distribution of the experiment result shows that the hydrophilic surface cools faster compared the superhydrophobic surface, because of the larger contact area.
superhydrophobic surface droplet hydrodynamics heat transfer
Anggito Tetuko Ka Kit Li Alex Wu Robert Lamb Gary Rosengarten
School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney 2052, School of Chemistry, The University of Melbourne, Melbourne 3010, Victoria, Australia
国际会议
4th International Symposium on Heat Transfer and Energy Conservation(第四届传热与节能国际研讨会 ISHTEC2012)
广州
英文
1-5
2012-01-06（万方平台首次上网日期，不代表论文的发表时间）