An ALE mesh movement scheme for long-term in-flight ice accretion

M. Fossati, R. A. Khurram*, W. G. Habashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The rather irregular shapes that glaze ice may grow into while accreting over the surface of an aircraft represent a major difficulty in the numerical simulation of long periods of in-flight icing. There is a constant need for remeshing: a wasteful procedure. In the framework of ALE formulations, a mesh movement scheme is presented, in which frame and elasticity analogies are loosely coupled. The resulting deformed mesh preserves the quality of elements, especially in the near-wall region, where accurate prediction of heat flux and shear stresses is required. The proposed scheme handles mesh deformation in a computationally efficient manner by localizing the mesh deformation. The 2D problem of ice accretion over single and multi-element airfoils is considered here as a numerical experiment. Experimentally measured glaze ice shapes were used to evaluate the performance of the present approach.

Original languageEnglish (US)
Pages (from-to)958-976
Number of pages19
JournalInternational Journal for Numerical Methods in Fluids
Volume68
Issue number8
DOIs
StatePublished - Mar 20 2012
Externally publishedYes

Keywords

  • ALE
  • Computational efficiency
  • Elasticity
  • In-flight icing
  • Mesh movement
  • Mesh quality

ASJC Scopus subject areas

  • Computer Science Applications
  • Computational Mechanics
  • Applied Mathematics
  • Mechanical Engineering
  • Mechanics of Materials

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