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 language | English |
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Pages (from-to) | 958 - 976 |
Number of pages | 19 |
Journal | International Journal of Numerical Methods in Fluids |
Volume | 68 |
Issue number | 8 |
DOIs | |
Publication status | Published - 20 Mar 2012 |
Keywords
- in flight icing
- ALE
- mesh movement
- elasticity
- mesh quality
- computational efficiency