Numerical Analysis of Two-Dimensional Flows around Elliptic Wings above a Flat Plate

Abstract

This paper reports on flows around two-dimensional elliptic wings which are linearly arranged above a flat plate. To solve two-dimensional time-dependent incompressible Navier-Stokes equations which use a body-fitted curvilinear coordinate system, a numerical solution method has been developed, and the method has been applied to the flows around 25% thickness elliptic wing cascades slanted at an angle of attack 15° at a Reynolds number of 1.6 × 103. Those wings are linearly arranged at an equal distance above a flat plate. This paper presents a number of numerical solutions for streamlines, vorticity profiles, lift, drag and pressure distributions. The lift and the drag almost regularly fluctuate with time, and the flow rates through each passage also regularly fluctuate. The present studies have been conducted as basic research into the mechanism of blowing snow off a road. © 1992, The Japan Society of Mechanical Engineers. All rights reserved.