Lattice-Boltzmann Analysis of Three-Dimensional Ice Shapes on a NACA 23012 Airfoil

Paper #:
  • 2015-01-2084

Published:
  • 2015-06-15
DOI:
  • 10.4271/2015-01-2084
Citation:
König, B., Fares, E., and Broeren, A., "Lattice-Boltzmann Analysis of Three-Dimensional Ice Shapes on a NACA 23012 Airfoil," SAE Technical Paper 2015-01-2084, 2015, doi:10.4271/2015-01-2084.
Pages:
12
Abstract:
A Lattice-Boltzmann approach is used to simulate the aerodynamics of complex three-dimensional ice shapes on a NACA 23012 airfoil. The digitally produced high fidelity geometrical ice shapes were created using a novel laser scanning technique in the NASA Icing Research Tunnel. The geometrically fully resolved unsteady simulations are conducted on two ice shapes representing a roughness type and a horn type icing on the leading edge of the airfoil. Comparisons between simulation and experiment of lift, drag, and pitching moment as well as pressure distributions indicate overall a good qualitative agreement in capturing the aerodynamic degradation. Especially for the horn-type ice shape, the quantitative agreement is also mostly very good. Analysis of the flow structures indicates furthermore a good capturing of the three-dimensional separation behavior of the flow.
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