Water Drop Impact on Cold Surfaces with Solidification
An experimental study has been carried out to identify the influence of solidification upon the impact process of a single water drop on aluminium surfaces. Water drops ranged from 0.5 mm to 2.5 mm in diameter, the impact speeds were from 0.8 m/s to 20 m/s and surface temperatures included 20℃ and -13℃. The impact was photographed with a high-speed camera and the spreading diameter, aspect ratio and the height of the splat was measured from the images. It is found out that solidification did not influence the impact process during the first spreading phase while it suppressed receding significantly for lower impact velocities. It is inferred that the ratio of time scales of fluid dynamics and heat transfer determines the influence of solidification upon the impact process.
water drop impact solidification spreading receding
H. Li I. V. Roisman C. Tropea
Fachgebiet Str(o)mungslehre und Aerodynamik Fachgebiet Str(o)mungslehre und Aerodynamik Center of Smart Interfaces Technische Universit¨at Darms
国际会议
广州
英文
451-453
2011-06-30（万方平台首次上网日期，不代表论文的发表时间）