22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-7.3.1
QUASI-SIMULTANEOUS VISCOUS INVISCID INTERACTION FOR THREE DIMENSIONAL TURBULENT WING FLOW
E. G. M. Coenen (1), A. E. P. Veldman (1), G. Patrianakos (2)
(1) Department of Mathematics, University of Groningen, The Netherlands;
(2) Department of Aerospace Engineering, University of Bristol, UK
Keywords: viscous-inviscid interaction, three-dimensional boundary layer, swept wings,
quasi-simultaneous coupling technique, panel method
A fully three-dimensional viscous-inviscid interaction
method is developed for the calculation
of steady incompressible flow over transport
wing configurations. The external inviscid flow
is computed with a constant-potential (Dirichlet)
panel method and the viscous layer is described
with three turbulent integral boundary layer equations,
in a Cartesian coordinate system. The interaction
between the two regions is modelled
via the wall transpiration velocity concept. From
the used external flow formulation approximations
for the edge velocity components are derived,
required for the quasi-simultaneous coupling.
The boundary layer equations are discretised
with a finite volume scheme, and solved
simultaneously with the approximations for the
external flow by Newton’s method. Results are
presented for unswept and swept wing cases and
are compared with experiment and other computational
results.
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