防除冰过程中的传热传质特性  

Mass and Heat Transport During Anti⁃icing and De⁃icing Processes

作　　者：商雨禾 李栋[1,2,3] 王佳勇 沈雷虎 艾凡彪 吴九龙 SHANG Yuhe;LI Dong;WANG Jiayong;SHEN Leihu;AI Fanbiao;WU Jiulong(School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210046,P.R.China;Jiangsu Energy System Process Conversion and Emission Reduction Technology Engineering Laboratory,Nanjing Normal University,Nanjing 210046,P.R.China;Key Laboratory of Icing and Anti/De‐icing,China Aerodynamics Research and Development Center,Mianyang 621000,P.R.China)

机构地区：[1]南京师范大学能源与机械工程学院,南京210046 [2]南京师范大学江苏省能源系统过程转化与减排技术工程实验室,南京210046 [3]中国空气动力研究与发展中心结冰与防除冰重点实验室,绵阳621000

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2023年第S01期66-83,共18页南京航空航天大学学报（英文版）

基　　金：funded by the Key Laboratory of Icing and Anti/de-icing of CARDC(No.IADL20220105);the National Natural Science Foundation of China(No.52006107)。

摘　　要：通过数值模拟和实验研究了抑制冰形成的两种方法:被动的表面功能化和主动的超声振动技术。由于表面凸起的宏观结构能在液滴扩展和收缩过程中改变其形状,因此液滴撞击具有立方体、单个和交叉三角脊以及悬空棱镜等宏观结构的超疏水表面时的接触时间可以有效降低。受到超声振动的基板会形成非线性的等效剪切应力分布,从而导致撞击液滴出现不同的动力学模式,并提高了除冰性能。研究揭示了表面宏观结构和超声振动技术对抗冰和除冰的有效性,为设计和优化抗冰/除冰系统提供了潜在方法。Suppression of ice formation by inhibiting droplet deposition from both passive surface functionalization and active application of ultrasonic vibration is investigated through numerical simulation and experiments.The contact time of droplet impacting on superhydrophobic surfaces with macro-structures,including cubic protrusion,single and crossed triangular ridges,and suspended prism,can be effectively reduced due to the droplet deformation induced by the structures during expansion and retraction processes.The substrate subjected to ultrasonic vibration exhibits a nonlinear distribution of equivalent shear stress,which leads to different dynamics modes of impact droplet and iced droplet removal performance.This work reveals the effectiveness of macro-structures and the ultrasonic vibration on anti-icing and de-icing,and provides potential approaches for the design and optimization of anti-/de-icing system.

关 键 词：防冰 除冰 液滴撞击 超声振动 超疏水表面 宏观结构 除霜 

分 类 号：TK11[动力工程及工程热物理—热能工程]