Effects of black silicon surface structures on wetting behaviors,single water droplet icing and frosting under natural convection conditions
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- 英文论文题名：Effects of black silicon surface structures on wetting behaviors,single water droplet icing and frosting under natural convection conditions
- 论文作者：Xiaofei Yue ; Weidong Liu ; Yuan Wang
- 英文论文作者：Xiaofei Yue ; Weidong Liu ; Yuan Wang ; Department of Aerospace Science and Engineering ; National University of Defense Technology
- 年：2016
- 作者机构：Department of Aerospace Science and Engineering,National University of Defense Technology;
- 英文论文关键词：wetting behavior ; anti-icing and anti-frosting ; black silicon ; two-stage black silicon
- 会议召开时间：2016-09-04
- 会议录名称：2016海峡两岸流体力学研讨会论文摘要集
- 语种：英文
- 分类号：O552.6
- 学会代码：AGLU
- 会议名称：2016海峡两岸流体力学研讨会
- 会议地点：中国青海西宁
- 主办单位：中国力学学会
- 学会名称：中国力学学会
- 页数：1
- 文件大小：4690k
- 原文格式：D
- 会议级别：全国
摘要
The present study experimentally investigated the effects of black silicon and two-stage black silicon surface structures on the characteristics of wetting, icing process of a single water droplet, and the frost accumulation under natural convection conditions. Black silicon and two-stage black silicon surfaces were first designed and fabricated, and then examined by means of scanning electron microscopy(SEM). Wetting behavior was measured by contact angle measurement system. The icing and frosting processes were acquired through high-speed photography. The test surfaces were cooled down from room temperature to well below 0℃ by circulating ethyl alcohol via a constant temperature system. The results show that compared with uncoated silicon, black silicon and two-stage black silicon surfaces can largely increase the surface hydrophobicity, reduce the freezing thickness deformation and show anti-frosting performance. This research provides a new type of hydrophobic surface structure and plays an important role in designing anti-icing/antifrosting surfaces for practical applications.
The present study experimentally investigated the effects of black silicon and two-stage black silicon surface structures on the characteristics of wetting, icing process of a single water droplet, and the frost accumulation under natural convection conditions. Black silicon and two-stage black silicon surfaces were first designed and fabricated, and then examined by means of scanning electron microscopy(SEM). Wetting behavior was measured by contact angle measurement system. The icing and frosting processes were acquired through high-speed photography. The test surfaces were cooled down from room temperature to well below 0℃ by circulating ethyl alcohol via a constant temperature system. The results show that compared with uncoated silicon, black silicon and two-stage black silicon surfaces can largely increase the surface hydrophobicity, reduce the freezing thickness deformation and show anti-frosting performance. This research provides a new type of hydrophobic surface structure and plays an important role in designing anti-icing/antifrosting surfaces for practical applications.
The present study experimentally investigated the effects of black silicon and two-stage black silicon surface structures on the characteristics of wetting, icing process of a single water droplet, and the frost accumulation under natural convection conditions. Black silicon and two-stage black silicon surfaces were first designed and fabricated, and then examined by means of scanning electron microscopy(SEM). Wetting behavior was measured by contact angle measurement system. The icing and frosting processes were acquired through high-speed photography. The test surfaces were cooled down from room temperature to well below 0℃ by circulating ethyl alcohol via a constant temperature system. The results show that compared with uncoated silicon, black silicon and two-stage black silicon surfaces can largely increase the surface hydrophobicity, reduce the freezing thickness deformation and show anti-frosting performance. This research provides a new type of hydrophobic surface structure and plays an important role in designing anti-icing/antifrosting surfaces for practical applications.
引文