Surface roughness and heat transfer prediction for development of an improved aircraft ice accretion modeling tool

Yiqiang Han, Jose Palacios

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In an effort to improve accuracy of current aircraft ice accretion prediction tools, experimental and analytical studies have been conducted on airfoils roughened by natural ice accretion. Surface roughness introduced by ice accretion and its effect on surface convective heat transfer have been tested and modeled, based on 10 experimental test cases. A novel scaling coefficient relating the Stanton and the Reynolds number (CSR) was introduced for heat transfer comparison and modeling in turbulent regime. By coupling the ice roughness and heat transfer models together with LEWICE ice accretion tool, an improved ice accretion model has been achieved. Four experimental ice shapes were obtained at the AERTS laboratory for model validation. The new surface roughness model had very good agreement in both overall ice shape and ice thickness at the stagnation line (within 5% discrepancy for four experimental cases) whereas LEWICE prediction constantly under-estimate the stagnation ice thickness by 30%. Over-prediction of ice horn lengths were also addressed by the proposed model. In one of the in glaze to rime regime cases, LEWICE over-predicted the upper and lower horn length by 32% and 22% respectively, whereas the new model prediction resulted in ±3% accuracy.

Original languageEnglish (US)
Title of host publication8th AIAA Atmospheric and Space Environments Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624104336
StatePublished - Jan 1 2016
Event8th AIAA Atmospheric and Space Environments Conference, 2016 - Washington, United States
Duration: Jun 13 2016Jun 17 2016

Publication series

Name8th AIAA Atmospheric and Space Environments Conference

Other

Other8th AIAA Atmospheric and Space Environments Conference, 2016
CountryUnited States
CityWashington
Period6/13/166/17/16

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All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Atmospheric Science

Cite this

Han, Y., & Palacios, J. (2016). Surface roughness and heat transfer prediction for development of an improved aircraft ice accretion modeling tool. In 8th AIAA Atmospheric and Space Environments Conference (8th AIAA Atmospheric and Space Environments Conference). American Institute of Aeronautics and Astronautics Inc, AIAA.