N.A. Adams, L. Kleiser

The two-dimensional nonlinear evolution of a second-mode instability in a flat plate boundary layer at a free-stream Mach number of M[infinity] = 5 is investigated by direct numerical simulation. An explicit spectral/finite-difference scheme employing the temporal model is used. A nonlinear saturation process is found, during which a weak viscous shock develops near the wall. A comparison of the numerical result obtained in the shock region with a onedimensional analytic weak-shock solution is made and good agreement of the shock-normal velocity distribution and shock thickness is found. The nonlinear saturation is characterized by a cascade of states with alternating high and low energy levels of the higher Fourier-modes.

8. DGLR-Fach-Symposium, Köln, 1992

Conference Paper

englisch

21,0 x 29,7 cm, 8 Seiten

DGLR-Bericht, 1992, 1992-07, Strömungen mit Ablösung; S.389-396; 1992; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aerodynamics

Bestellbar

1992