UNSTEADY NAVIER- STOKES EQUATIONS COMPUTATION OF MANEUVERING DELTA WINGS ABOUT HIGH MEAN INCIDENCE

Kandil, Osama A.; Chuang, H. A.

doi:10.21608/asat.1989.25865

UNSTEADY NAVIER- STOKES EQUATIONS COMPUTATION OF MANEUVERING DELTA WINGS ABOUT HIGH MEAN INCIDENCE

Document Type : Original Article

Authors

Osama A. Kandil ¹
H. A. Chuang ²

¹ Professor, Department of Mechanical Engineering and Mechanics. Old Dominion University ,Norfolk .VA 23529 USA.

² Assistant professor , Department of Mechanical Engineering and Mechanics, Old Dominion University.Norfolk , VA , 23529 , USA.

10.21608/asat.1989.25865

Abstract

In this paper, the unsteady three-dimensional thin-layer Navier-Stokes equations in the moving frame of reference are solved by using a time-accurate implicit approximately-factored finite-volume scheme. The steady results for a delta wing of aspect ratio of 1 and 20.5° angle of attack are compared with the experimental data of ref. 18 . With the steay results serving as the initial conditions for the pitching motion the problem is solved. We present comparisons between the Euler equations solution and the thin-layer Navier-Stokes solution for both the steady and unsteady flows.