Uppsala University Department of Information Technology

Technical Report 2007-019

Simulations of Ground Effects on Wake Vortices at Runways

Sofia Eriksson, Magnus Svärd, and Jan Nordström

June 2007

In this paper the interaction between two counter-rotating vortices is examined, and the performance of a newly developed finite difference code is discussed. The Reynolds numbers considered are low to medium, and the flow is compressible. Most of the computations are performed in a two dimensional domain, with different grid sizes, Reynolds number and order of accuracy of the scheme. Finally, a three dimensional computation is made in order to examine the relevance of the two dimensional model.

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