착빙 해석의 표면 거칠기 모델 개선을 위한 착빙 풍동시험 연구

Translated title of the contribution: Icing Wind Tunnel Tests to Improve the Surface Roughness Model for Icing Simulations

Chankyu Son, Seungin Min, Taeseong Kim, Sun-Tae Kim, Kwanjung Yee*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

For the past decades, the analytic model for distributed surface roughness has been developed to improve the accuracy of the icing simulation code. However, it remains limitations to validate the developed model and determine the empirical parameters due to the absence of the quantitative experimental data which were focused on the surface state. To this end, the experimental study conducted to analyze the ice covered surface state from a micro-perspective. Above all, the tendency of the smooth zone width which occurs near the stagnation point has been quantitatively analyzed. It is observed that the smooth zone width is increased as growing the ambient temperature and freestream velocity. Next, the characteristics of the ice covered surface under rime and glaze ice have been analyzed. For rime ice conditions, ice elements are developed as the opaque circular corn in the opposite direction of freestream. The height and interval of each circular corn are increased as rising the ambient temperature. For glaze ice conditions, numerous lumps of translucent ice can be observed. This is because the beads formed by gravity concentrate and froze on the lower surface.
Translated title of the contributionIcing Wind Tunnel Tests to Improve the Surface Roughness Model for Icing Simulations
Original languageUndefined/Unknown
JournalJournal of the Korean Society for Aeronaturical and Space Sciences
Volume46
Issue number8
Pages (from-to)611-620
Number of pages10
ISSN1225-1348
DOIs
Publication statusPublished - 2018

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