Reduction in aerodynamic drag acting on a commercial vehicle by using a dimpled surface

Palanivendhan, M.; Chandradass, J.; Saravanan, C.; Philip, Jennifer; Sharan, Roded

doi:10.1016/j.matpr.2021.01.884

Cited by 17 publications

(8 citation statements)

References 8 publications

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“…Ahmed Al-Saadi 1 , Khaled Al-Farhany 1 , Ahmed Essa Faisal 1 , Mohammed Azeez Alomari 1 , Wasim Jamshed 2* , Mohamed R. Eid 3,4 , El Sayed M. Tag El Din 5 & Ayesha Amjad 6 The current study investigates different methods to minimize the drag coefficient (C D ) without ignoring the safety factor related to the stability of a vehicle, i.e., the lift coefficient (C L ). The study was carried out by employing an SUV car analyzed numerically using one of the CFD software, Ansys.…”

Section: Improvement Of the Aerodynamic Behaviour Of The Passenger Ca...mentioning

confidence: 99%

“…Aerodynamic experiments on a hatchback automobile were carried out to improve both characteristics at the same time. The hatchback automobile was picked because it is favored by most individuals who value their money [4][5][6][7] . The global demand for fuel, as well as the environmental issues, push researchers to investigate ways to minimize the consumption of fuel.…”

Section: Improvement Of the Aerodynamic Behaviour Of The Passenger Ca...mentioning

confidence: 99%

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Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed

Al-Saadi

Al-Farhany

Faisal

et al. 2022

Sci Rep

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The current study investigates different methods to minimize the drag coefficient (CD) without ignoring the safety factor related to the stability of a vehicle, i.e., the lift coefficient (CL). The study was carried out by employing an SUV car analyzed numerically using one of the CFD software, Ansys. Four different models such as realizable k–ε, standard k–ω, shear stress transport k–ω, and Reynolds stress model (RSM). The considered models have been validated with experimental data and found in good agreement. The considered inlet velocity varies from 28 to 40 m/s, the results showed that the drag coefficient and the stability are both improved by applying a modification on the roof of the considered car.

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Section: Improvement Of the Aerodynamic Behaviour Of The Passenger Ca...mentioning

confidence: 99%

Section: Improvement Of the Aerodynamic Behaviour Of The Passenger Ca...mentioning

confidence: 99%

Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed

Al-Saadi

Al-Farhany

Faisal

et al. 2022

Sci Rep

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“…Li et al [92,93] pointed out that the resistance could be reduced by arranging spherical pits in the specific positions such as the front and rear of the train, bogies and inter-car connections. Palanivendhan et al [94] used dimples to improve the air flow around a commercial vehicle body and the drag reduction could only be achieved by adding a certain number of small size dimples (Figure 9(f3)). Yang et al [95] carried out wind tunnel tests on the notchback MIRA model with pits, convex structures and grooves arranged on the different locations of the car (Figure 9(e1)).…”

Section: Concave-convex Structurementioning

confidence: 99%

“…Figure 9. The image of the (a1) dung beetle, (b1) cybister bengalensis, (c1) humpback whale, (d1) dune topography; (a2) The SEM image of the dung beetle head[84], (b2) The SEM image of the cybister bengalensis back[85], (c2) The structure of humpback whale fins[86], (d2) The pits in the desert; (e1) The convex rough surface of the MIRA model, (e2) The microchannel heat sink model with impinging jets with convex dimples[97], (e3) The newly developed swirl chamber with protrusion structure[99]; (f1) The cross-section of microchannel with dimples[96], (f2) The non-smooth surface with ball sockets of train model[91], (f3) The commercial vehicle model with concave structures[94].…”

mentioning

confidence: 99%

Nature-Inspired Structures Applied in Heat Transfer Enhancement and Drag Reduction

Zhu

Peng

et al. 2021

Micromachines

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Heat exchangers are general equipment for energy exchange in the industrial field. Enhancing the heat transfer of a heat exchanger with low pump energy consumption is beneficial to the maximum utilization of energy. The optimization design for enhanced heat transfer structure is an effective method to improve the heat transfer coefficient. Present research shows that the biomimetic structures applied in different equipment could enhance heat transfer and reduce flow resistance significantly. Firstly, six biomimetic structures including the fractal-tree-like structure, conical column structure, hybrid wetting structure, scale structure, concave-convex structure and superhydrophobic micro-nano structure were summarized in this paper. The biomimetic structure characteristics and heat transfer enhancement and drag reduction mechanisms were analyzed. Secondly, four processing methods including photolithography, nanoimprinting, femtosecond laser processing and 3D printing were introduced as the reference of biomimetic structure machining. Finally, according to the systemic summary of the research review, the prospect of biomimetic heat transfer structure optimization was proposed.

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“…This leads to an increase in both fuel efficiency and load carrying capacity. Many drag forces can affect a vehicle, including lift, wave drag, and induced drag [8]. Diesel engines with a displacement volume of 12 to 16 litres and a braking power of 800 to 1200 kW are typically used in high-speed express vehicles.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic design optimization of locally built FSR Isuzu bus through numerical simulation

Kahsay,

Zeleke

2024

Eng. Res. Express

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AReducing the fuel consumption of commercial vehicles—especially those used for public transportation—has become increasingly important due to advancements in the automotive industry. On the other hand, the main disadvantages of buses and other commercial vehicles are their fuel consumption, exhaust pollutants, and crosswind stability. Most buses built in Ethiopia have aerodynamic rectangular shapes and strong drag resistance forces, which lead to higher fuel consumption. One of the most accessible buses in Ethiopia is the FSR Isuzu Bus; its external body is locally constructed and has a poor aerodynamic shape. The primary goal of this study is to reduce aerodynamic drag force by improving the outer body shape of the current FSR Isuzu Bus. It also aims to examine the impact of roughness (strip) on the overall aerodynamic characteristics of the bus when it encounters crosswinds, thereby reducing fuel consumption, roll moment, and side force. For computational fluid dynamics (CFD) analysis, ANSYS Fluent is used, and Solidwork is used to model the bus body. A comparison is made between the current CFD analysis of the bus body and the modified design at varying speeds. Three separate models are used in the analysis. At an average speed of 100 kmph, 29.58% (4 to 5 liters) of fuel can be saved, and the drag force is reduced by roughly 49.7% when comparing the new concept to the current bus. By utilizing a strip on the bus's roof, the side force coefficient and the roll moment coefficient are subsequently reduced from model two to model three by 8.76% and 9.01%, respectively. The study's conclusions indicate that the external body shape changes have reduced drag; nevertheless, adding roof strips has increased drag to a manageable level and enhanced crosswind stability.

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Reduction in aerodynamic drag acting on a commercial vehicle by using a dimpled surface

Cited by 17 publications

References 8 publications

Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed

Improvement of the aerodynamic behaviour of the passenger car by using a combine of ditch and base bleed

Nature-Inspired Structures Applied in Heat Transfer Enhancement and Drag Reduction

Aerodynamic design optimization of locally built FSR Isuzu bus through numerical simulation

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