Droplet impinging behavior on surfaces: Part II - Water on aluminium and cast iron surfaces

International Conference on Advances in Materials and Manufacturing Applications 2016

Sangavi, S.^1 ; Balaji, S.^1 ; Mithran, N.^1 ; Venkatesan, M.^1

School of Mechanical Engineering, SASTRA University, Thanjavur, Tamilnadu

613401, India^1

关键词: Cast iron surface;    Convection and conduction;    Cooling process;    Droplet cooling;    Droplet spreading;    Effect of temperature;    Metal surfaces;    Spreading radius;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012220/pdf
DOI  :  10.1088/1757-899X/149/1/012220

来源: IOP

【 摘 要 】

Droplet cooling of metal surfaces is an important area of research in industrial applications such as material quenching, nozzle spraying, etc. Fluids (water) act as an excellent agent in heat transfer to remove excess heat in various processes by convection and conduction. Such cooling process varies the material properties. The bubbles formed during droplet impinging on the surface act as heat sink and causes variation of height and spreading radius of the droplet with increase in temperature. In the present work, an experimental study of the droplet impinging behavior on Aluminium and Cast iron surfaces is reported. The water droplets are made to fall on the surface of the specimens from a specific height, which also influences the spreading radius. The effect of temperature on droplet height and droplet spreading radius is detailed.