22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-2.4.3

PHANTOM VORTICITY IN EULER SOLUTIONS ON HIGHLY STRETCHED GRIDS

S. A. Prince (1), D. K. Ludlow (2), N. Qin (2)
(1) DERA Bedford, UK; (2) Cranfield College of Aeronautics, UK

Keywords: phantom vorticity, numerical dissipation, euler equations, grid stretching

The excessive numerical dissipation, which is known to occur when the steady Euler equations are solved on fine, highly stretched grids is investigated. A new formulation of the higher order MUSCL scheme that accounts for grid non-uniformity is derived and applied to the alleviation of this “phantom vorticity”.

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