| タイトル | Modeling of surface roughness effects on glaze ice accretion |
| 著者（英） | Potapczuk, M.; Hansman, R. John, Jr.; Yamaguchi, Keiko; Berkowitz, Brian |
| 著者所属（英） | Sverdrup Technology, Inc.; NASA Lewis Research Center; Massachusetts Inst. of Tech. |
| 発行日 | 1989-01-01 |
| 言語 | eng |
| 内容記述 | The cause and effects of roughness on accreting glaze ice surfaces were studied with microvideo observations. Distinct zones of surface water behavior were observed, including a smooth wet zone in the stagnation region with a uniform water film, a rough zone where surface tension effects caused coalescence of surface water into stationary beads, and a zone where roughness elements grow into horn shapes. In addition, a zone where surface water ran back as rivulets and a dry zone where rime feathers formed were observed. The locations and behaviors of these zones are discussed. A simple multizone modification to the glaze ice accretion model is proposed to include spatial variability in surface roughness. Two test cases using the multizone model showed significant improvements for the prediction of glaze ice shapes. |
| NASA分類 | AIR TRANSPORTATION AND SAFETY |
| レポートNO | 89A28451
AIAA PAPER 89-0734 |
| 権利 | Copyright |
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