Aerodynamic Drag Reduction using a Conduit in the Ahmed Body
DOI:
https://doi.org/10.37934/cfdl.17.5.2644Keywords:
Drag, Ahmed body, Aerodynamics, Conduit, Numerical model, Turbulent flowAbstract
In this study, the focal challenge is reducing drag around the Ahmed body, a critical concern in aerodynamics. The approach involves perforating a rectangular conduit inside the body, redirecting part of the airflow from the front to the rear end to minimize drag. Using Ansys Fluent CFD software and the SST k-w turbulence model, a numerical model for turbulent flow around a 3D body has been developed. Through a series of numerical simulations, variations in the conduit’s position relative to the lowest slanted edge of the body have been explored. At the optimal position with the lowest drag, an examination has been conducted on the narrowing of the conduit outlet dimensions. Results indicate that, with a suitable conduit position and an appropriate exit narrowing, a decrease in drag of up to 3% could be achieved. Ongoing work involves the examination of the conduit’s tilt at the outlet to determine the optimal arrangement for further drag reduction. This research offers practical insights for drag reduction and contributes to the broader field of aerodynamics.
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