# Numerical Analysis of Aerodynamic Flow Control Using Vortex Generator on a Vehicle Model
> Jafar N.A.F.I.

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_105034718350
Jurnal / Konferensi: Journal of Physics Conference Series
Tahun terbit: 2026
DOI: https://doi.org/10.1088/1742-6596/3186/1/012051
ISSN: 17426588
Citations: 0

## Authors
- Jafar N.A.F.I.

## Abstract
Abstract Minibuses experience high aerodynamic drag due to their bluff-body geometry, which causes early flow separation and large wake formation. This study examines the use of triangular-shaped vortex generators to reduce drag on a simplified minibus model using Computational Fluid Dynamics simulations. The model, a 1:6 scaled reversed Ahmed body, was equipped with triangular-shaped vortex generators at angles of attack of 0° to 45°. Numerical simulations with upstream velocity of 22.2 m/s were conducted under steady, incompressible, and turbulent conditions with the standard k–ε model. The baseline model showed a high drag coefficient, driven by strong suction and a large wake. The triangular-shaped vortex generators applied to the model generate streamwise vortices that delay separation, recover the base pressure, and significantly lowered the drag coefficient. The optimal configuration at 40° achieved a 7.66% reduction and improved the base pressure coefficient. Beyond this angle of attack, the vortices start to break down, and their effectiveness is reduced. These results highlight the triangular-shaped vortex generators as a cost-effective, energy-efficient drag reduction method with the potential to enhance vehicle fuel economy.

## Keywords
- Drag
- Vortex generator
- Vortex
- Mechanics
- Wake turbulence
- Wake
- Aerodynamic drag
- Aerodynamics
- Physics
- Lift-induced drag
- Drag coefficient
- Turbulence
- Reduction (mathematics)
- Flow (mathematics)
- Flow control (data)
- Lift-to-drag ratio
- Suction
- Parasitic drag
- Vortex shedding
- Zero-lift drag coefficient
- Aerospace engineering
- Flow separation
- Classical mechanics
- Starting vortex
- Computational fluid dynamics
- Numerical analysis
- Computer simulation
- Control theory (sociology)
- Engineering
- Generator (circuit theory)
- Base (topology)
- Aerodynamic force
- Vorticity
- Angle of attack

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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