An experimental study on of the effect of various deflectors used for light trucks in Indian subcontinent

Chowdhury, Harun; Juwono, Raymond; Zaid, Mohamed; Islam, Rezaul; Loganathan, Bavin; Alam, Firoz

doi:10.1016/j.egypro.2019.02.115

Cited by 10 publications

(4 citation statements)

References 5 publications

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“…However, this type of analysis requires a verification of the computational model to validate the drag coefficient compared to previous studies. Experimental studies [17,18] using industrial wind tunnel testing for the range for 100 km/h, found the drag coefficient to be between 0.41 and 0.51. For our study, the drag coefficient is 0.459, which is within the acceptable range.…”

Section: Results Validation and Limitationmentioning

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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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: Results Validation and Limitationmentioning

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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“…Hatchback is a simple box shaped vehicle often referred as bluff or blunt bodied (see Figure 2), where the total height of the wake region is equal (or even larger [22], see Figure 2a) to the height of the vehicle, which was visualized by Boyer et al [23] for a pickup truck. Heavy trucks usually have a bluff shape with large wake regions; in Figure 2, the wake regions are indicated with blue.…”

Section: Hatchbackmentioning

confidence: 99%

“…In work by Kim et al [69], where side skirts and boat tails were applied, the DR decrease led to an estimated 13.4% fuel saving. Chowdhury et al [22] have examined various shapes of trucks used in the Indian subcontinent (typically large C D vehicles) that generate large wake regions above and behind the vehicle. By using fairings compared to the baseline construction, the C D was reduced by 12%.…”

Section: Shape Optimizationmentioning

confidence: 99%

Quantitative Analysis of Drag Reduction Methods for Blunt Shaped Automobiles

Szodrai

2020

Applied Sciences

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In fluid mechanics, drag related problems aim to reduce fuel consumption. This paper is intended to provide guidance for drag reduction applications on cars. The review covers papers from the beginning of 2000 to April 2020 related to drag reduction research for ground vehicles. Research papers were collected from the library of Science Direct, Web of Science, and Multidisciplinary Digital Publishing Institute (MDPI). Achieved drag reductions of each research paper was collected and evaluated. The assessed research papers attained their results by wind tunnel measurements or calculating validated numerical models. The study mainly focuses on hatchback and notchback shaped ground vehicle drag reduction methods, such as active and passive systems. Quantitative analysis was made for the drag reduction methods where relative and absolute drag changes were used for evaluations.

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“…Increasing fuel prices and awareness of the environment, the industry is striving to design more fuel-efficient vehicles and to improve existing technologies. Drag force is one of the essential aspects of vehicle design [1]. Nowadays, most trucks are designed to achieve ideal aerodynamic performance i.e.…”

mentioning

confidence: 99%

Aerodynamic Analysis on the Effects of Frontal Deflector on a Truck by using Ansys Software

Varadarajoo¹,

Ishak²,

Maji³

et al. 2022

IJIE

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The main causes of aerodynamic drag for automotive vehicles are the flow separation at the rear end of the vehicles. By reducing the drag force, it is possible to increase the fuel economy. Aerodynamic component i.e. Frontal Deflectors (FD) commonly used on trucks to prevent the flow separation. Frontal Deflectors themselves do create the drag, but they also reduce drags by preventing flow separation at downstream. The main aim of this paper is to quantify the effect of frontal deflectors on improving trucks aerodynamics. In this study, the simulation were ran for 6 different shapes of FD which acquires different height and different placement of FD that is mounted on the truck from the frontal roof by using ANSYS Fluent software. The design of the truck has been done in SOLIDWORK 2018 and the same design is used for analysis in ANSYS (Fluent). The two equation models used in this study are 𝑘𝑘− 𝜀𝜀 with applying the Reynolds-averaged Navier Stokes (RANS) equations for the behaviour of fluid flow around the truck. The Reynolds number used is 𝑅𝑅𝑅𝑅 = 1.1 × 106. Based on the result, all the FD’s resulted in reduction of 𝐶𝐶𝑑𝑑. The drag coefficient of all FD models differs. The velocity streamline acquired is different between the Frontal Deflector models mounted on the truck and the flow structure and vortex formation differs in various pattern formation. FD 4 produces the least value of drag. Hence, the efficiency of the truck improves. Therefore, FD 4 is the best model as the 𝐶𝐶𝑑𝑑 acquired is 0.508 with the height (15 mm) and placement of (230 mm) is the best FD to be used on a truck. Consequently, the drag reduction percentage of FD 4 compared to the truck without a FD is 32.2%.

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An experimental study on of the effect of various deflectors used for light trucks in Indian subcontinent

Cited by 10 publications

References 5 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

Quantitative Analysis of Drag Reduction Methods for Blunt Shaped Automobiles

Aerodynamic Analysis on the Effects of Frontal Deflector on a Truck by using Ansys Software

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