Micro Model for the Analysis of Spray Cooling Heat Transfer – Influence of Droplet Parameters
作者： M. Nacheva , J. Schmidt
DOI: 10.1007/978-3-540-85715-0_13
关键词: Macroscopic scale 、 Heat transfer 、 Mechanics 、 Materials science 、 Water cooling 、 Representative elementary volume 、 Energy balance 、 Heat transfer coefficient 、 Quenching 、 Leidenfrost effect
摘要: The quenching process of hot metal surfaces is studied on the micro level based behaviour impinging single droplets. As an application, water cooling steel sheet at initial surface temperatures above Leidenfrost point regarded. heat transfer investigated for a Representative Volume Element. It assumed that direct liquid-wall contact and kinetics droplet spreading dominate transfer. After numerical solution energy balance, transferred from wall to calculated as function spray parameters. On macro scale, coefficient can be determined by homogenisation using results model. Simulations are carried out under different assumptions model parameters wide range diameters, velocities mass fluxes. presented discussed in dependence varied
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