| 微细通道内蒸发薄液膜区壁面滑移及微流动特性 | |
| 赵俊杰 ; 彭晓峰 ; 段远源 ; ZHAO Jun-Jie ; PENG Xiao-Feng ; DUAN Yuan-Yuan | |
| 2010-06-08 ; 2010-06-08 | |
| 关键词 | 蒸发薄液膜 固液界面 滑移系数 壁面微流动 微通道 壁面温度跳跃 evaporating thin film solid-liquid interface slip coefficient micro flow near a wall microchannel wall temperature jump O359 |
| 其他题名 | SLIP AND MICRO FlOW CHARACTERISTICS NEAR A WALL OF EVAPORATING THIN FILMS IN A MICROCHANNEL |
| 中文摘要 | 基于扩展Young-Laplace方程和动力学理论研究微通道中蒸发薄液膜区固液界面附近流动和传热特性,考虑压力特征、壁面滑移和温度跳跃建立物理模型。利用边界层近似,提出一种计算固液界面吸附微液层热阻的方法,导得固液界面的热阻和温度。数值模拟结果表明,壁面微流动会降低毛细压力梯度,增加壁面热阻,降低液相过热度,恶化液膜铺展和传热性能,在薄液膜区不可忽略。阐明壁面微流动含义,指出滑移系数与吸附流动微液层厚度的关系。; Flow and heat transfer characteristics near the solid-liquid interface of an evaporating thin film in a microchannel was investigated using an augmented Young-Laplace model and the kinetic theory.Considering the pressure characteristics,a physical model with boundary layer approximation was developed to obtain the solid-liquid interfacial thermal resistance and temperature.The results show that,micro flow near a wall reduces capillary pressure gradient and liquid superheat as well as increasing solid-liquid interfacial thermal resistance,worsening liquid film spreading and heat transfer characteristics,effects of which are not to be neglected in the evaporating thin film region.The meaning of the micro flow and the relation between slip coefficient and adsorbed liquid layer thickness are both elucidated further.; 国家自然科学基金重点项目支持(No.50636020) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/50594]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 赵俊杰,彭晓峰,段远源,等. 微细通道内蒸发薄液膜区壁面滑移及微流动特性[J],2010, 2010. |
| APA | 赵俊杰,彭晓峰,段远源,ZHAO Jun-Jie,PENG Xiao-Feng,&DUAN Yuan-Yuan.(2010).微细通道内蒸发薄液膜区壁面滑移及微流动特性.. |
| MLA | 赵俊杰,et al."微细通道内蒸发薄液膜区壁面滑移及微流动特性".(2010). |
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