Dynamic Mitigation Mechanisms of Rime Icing with Propagating Surface Acoustic Waves.
Dynamic Mitigation Mechanisms of Rime Icing with Propagating Surface Acoustic Waves.
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DOI：
10.1021/acs.langmuir.2c01509
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发表时间：
2022-09-20
期刊：
影响因子：
3.9
通讯作者：
Fu, YongQing
中科院分区：
文献类型：
--
作者：
Yang, Deyu;Haworth, Luke;Agrawal, Prashant;Tao, Ran;McHale, Glen;Torun, Hamdi;Martin, James;Luo, Jingting;Hou, Xianghui;Fu, YongQing
在具有经济价值和战略重要性的表面积冰构成重大挑战。当前的防冰/除冰技术通常具有关于其效率、便利性、长期稳定性或可持续性的关键问题。作为一种新兴的减冰技术，薄膜声表面波（SAW）具有能量利用率高、能有效地与结构表面集成等优点，具有巨大的应用潜力。然而，防/除冰过程中激活SAW涉及复杂的界面演变和相变，它是至关重要的，以了解动态固-液-汽相变和冰的成核，生长和融化事件SAW搅拌下的性质。在这项研究中，我们系统地研究了多孔雾凇冰的吸积和去除结构表面激活SAW。我们发现，结冰和除冰过程与动态的界面相和结构变化的雾凇冰声表面波激活和声热诱导的局部加热，促进冰晶的融化。随后，SAW与在冰/结构界面处形成的薄水层的相互作用导致显著的流动效应，其导致冰的进一步损坏和融化、液体泵送、喷射或雾化。
Ice accretion on economically valuable and strategically important surfaces poses significant challenges. Current anti-/de-icing techniques often have critical issues regarding their efficiency, convenience, long-term stability, or sustainability. As an emerging ice mitigation strategy, the thin-film surface acoustic wave (SAW) has great potentials due to its high energy efficiency and effective integration on structural surfaces. However, anti-/de-icing processes activated by SAWs involve complex interfacial evolution and phase changes, and it is crucial to understand the nature of dynamic solid–liquid–vapor phase changes and ice nucleation, growth, and melting events under SAW agitation. In this study, we systematically investigated the accretion and removal of porous rime ice from structural surfaces activated by SAWs. We found that icing and de-icing processes are strongly linked with the dynamical interfacial phase and structure changes of rime ice under SAW activation and the acousto-thermally induced localized heating that facilitate the melting of ice crystals. Subsequently, interactions of SAWs with the formed thin water layer at the ice/structure interface result in significant streaming effects that lead to further damage and melting of ice, liquid pumping, jetting, or nebulization.
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