A new approach to understanding the effects of surface wettability on nucleate boiling

作者：Phan Hai Trieu^*; Caney Nadia; Marty Philippe; Colasson Stephane; Gavillet Jerome

来源：Mecanique & Industries, 2009, 10(3-4): 223-230.

DOI：10.1051/meca/2009051

• Wettability
• heat transfer
• boiling
• contact angle
• nanocoating

Although boiling process has been a major subject of research for several decades, its physics still remain unclear and require further investigation. This study aims at highlighting the effects of surface wettability on pool boiling heat transfer. Nanocoating techniques were used to vary the water contact angle from 20 to 110 degrees by modifying nanoscale surface topography and chemistry. The experimental results obtained disagree with the predictions of the classical models. A new approach of nucleation mechanism is established to clarify the nexus between the surface wettability and the nucleate boiling heat transfer. In this approach, we introduce the concept of macro- and micro- contact angles to explain the observed phenomenon.

• 出版日期2009-8
• 单位中国地震局