The Accuracy of the Numerical Solution in Predicting Ahmed Body Components Drag Coefficients

Hachimy, Fatima-Zahra; Omar, Ashraf Ali; Elsayed, Omar

doi:10.37934/cfdl.14.5.2432

Cited by 2 publications

(2 citation statements)

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“…Computational modelling approaches are applied to determine aerodynamic efficiency of vehicles' panelling with the aim of reducing fuel consumption [1]. Computational fluid dynamics (CFD) models can help to optimize the aerodynamic shape of vehicles to reduce the drag coefficient [1][2][3]. Hachimy et al, [2] presented a computational model focusing on three turbulent regimes to predict the drag coefficient for a vehicle body using ANSYS Fluent analysis.…”

Section: Introductionmentioning

confidence: 99%

“…Computational fluid dynamics (CFD) models can help to optimize the aerodynamic shape of vehicles to reduce the drag coefficient [1][2][3]. Hachimy et al, [2] presented a computational model focusing on three turbulent regimes to predict the drag coefficient for a vehicle body using ANSYS Fluent analysis. They investigated the kepsilon, the shear stress transfer (SST) and the k-omega SST to minimise the drag coefficient.…”

Section: Introductionmentioning

confidence: 99%

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One-Way Fluid Structure Interaction of a Utility Vehicle Splitter using CFD Modelling

Connor Wright,

Mohammad Al-Rawi

2023

CFDL

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The Utility Vehicle, commonly known as a “ute” in New Zealand, and a “pickup” in other countries, is very popular for work, recreation and motorsport. This report investigates how the addition of a front splitter influences the handling ability on a Ford Courier Ute, for better aerodynamics during racing. Computational fluid dynamics (CFD) methods and Finite Element Analysis (FEA) were used to investigate the one-way fluid structure interaction of the speed of the Ute with and without the splitter modification. Three configurations of the splitter were modelled and analysed using SolidWorks 2022, CFD and FEA packages. The ground clearance between the splitter and the road was set at three heights, 200 mm, 150 mm and 50 mm. These designs were compared with the control, in terms of the amount of downforce, drag and aerodynamic efficiency. The ground clearance of 150 mm was optimal, in terms of the parameters investigated. The findings from this paper may inspire Ute enthusiasts to fit a splitter to their Ute for racing applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

One-Way Fluid Structure Interaction of a Utility Vehicle Splitter using CFD Modelling

Connor Wright,

Mohammad Al-Rawi

2023

CFDL

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Parametric optimization for van drag reduction using a side flap

Hachimy

Omar

Elsayed

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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In current study, the aerodynamic drag reduction of a simplified van model was numerically explored by mounting a side flap on the rear end, on the basis of ANSYS-Fluent, an established Computational Fluid Dynamics (CFD) software. A robust Taguchi test design method was leveraged to optimize the independent parameters related to side flap design in order to achieve the best combination for maximum drag reduction with minimum test numbers. The accuracy of the numerical study was validated using the benchmark, Ahmed body model. The current study outcomes established the efficiency of adding a side flap to weaken the longitudinal vortices, at the rear part of the van model, for the purpose of reducing the aerodynamic drag. In this study, the authors achieved a maximum reduction of 11.50% for total drag coefficient and 11.73% for pressure drag coefficient.

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The Accuracy of the Numerical Solution in Predicting Ahmed Body Components Drag Coefficients

Cited by 2 publications

References 12 publications

One-Way Fluid Structure Interaction of a Utility Vehicle Splitter using CFD Modelling

One-Way Fluid Structure Interaction of a Utility Vehicle Splitter using CFD Modelling

Parametric optimization for van drag reduction using a side flap

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