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- Title
A Numerical Analysis of Active Flow Control Techniques for Aerodynamic Drag Reduction in the Square-Back Ahmed Model.
- Authors
Phan, Thanh-Long; Pham, Quoc Thai; Nguyen, Thi Kim Loan; Nguyen, Tien Thua
- Abstract
Aerodynamic drag reduction is required with new stringent constraints on pollutant emissions and fuel efficiency of ground vehicles. In this context, active flow control is a promising approach to achieve this target. This study focuses on applying different flow control strategies on the square-back Ahmed model to reduce aerodynamic drag. A steady blowing jet, a synthetic jet and an unsteady jet are located at the back edges of the model as flow control devices. A numerical study based on the 3D WMLES simulation was performed to evaluate the drag reduction capabilities of these devices at different operating conditions. The results showed that a maximum aerodynamic drag reduction of 26.51% was achieved when using a steady blowing jet, and 17.27% with an unsteady jet. In contrast, the effect of the synthetic jet on the aerodynamic drag of the model is solely at high control frequencies.
- Subjects
DRAG (Aerodynamics); DRAG reduction; NUMERICAL analysis; ENERGY consumption
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 1, p239
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app13010239