Numerical study of new techniques drag reduction: application to aerodynamic devices

Abstract

In the present study, new drag reduction techniques applied to aerodynamic structures have been developed. The test cases have been numerically performed using three simplified models. Simulations have been performed by using the CFD software Ansys fluent. The first case deals with a laminar flow over a flat plate. Drag reduction is obtained by corrugating the shape of the plate. The second case treats a laminar flow over a NACA 0012 airfoil. By the addition of a device fixed on the flow separation point, the drag could be reduced. The last case concerns a turbulent flow over the Ahmed body. Drag reduction is obtained by the perforation of a conduit leading a part of the flow from the front to be injected at the rear of the body.

Drag Reduction of a NACA Aerodynamic Airfoil: A Numerical Study

“…These models encompass flat plates and simplified car geometries, both offering insights into effective drag reduction strategies. For instance, introducing corrugations on the surface of flat plates has demonstrated the potential to minimize drag [9]. Similarly, a drag reduction approach involves introducing controlled airflow into the rear end of the Ahmed body using a conduit [10].…”

Numerical research on a drag reduction technique used for the NACA 0012 airfoil

“…Flat plates and simplified car models are among these models. Some of strategies, employed on these models, used to reduce drag, flat plate shape corrugations could reduce drag [6]. Injecting some airflow into the back end of the Ahmed body through a conduit might reduce drag [7].…”