FLOW AND HEAT TRANSFER OF MICRO-DROPLET IMPACT ON THIN LIQUID FILM DURING SPRAY COOLING
FLOW AND HEAT TRANSFER OF MICRO-DROPLET IMPACT ON THIN LIQUID FILM DURING SPRAY COOLING
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DOI：
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发表时间：
2010
影响因子：
2.4
通讯作者：
W. Lei;Huai Xiu;Wang Li
中科院分区：
文献类型：
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作者：
W. Lei;Huai Xiu;Wang Li
在喷雾冷却过程中，微滴撞击对热表面薄液膜的流动和换热起着重要的作用。采用流体体积法(VOF)对单液滴和双液滴撞击薄液膜的换热特性进行了数值模拟。结果表明，液滴撞击导致了高热流密度。表面换热系数随液滴大小和速度的增大而提高，冲击引起的扰动可以相互叠加，增强换热效果。
The effect of micro-droplet impact plays an important role in the flow and heat transfer of the thin liquid film on a hot surface during spray cooling.The heat transfer characteristics of single and double droplets impacting a thin liquid film are numerical simulated using the Volume of Fluid(VOF) Method.The results indicate that the droplet impact leads to high heat flux. The surface heat transfer coefficient improves with the increase of droplet size and velocity.The disturbance caused by the impact can be superposed with each other to enhance the heat transfer effect.