Aerodynamic effect of bicycle wheel cladding — A CFD study

Arora, B.B.; Bhattacharjee, Sourajit; Kashyap, Vivek; Khan, Mohammad Ashraf; Tlili, Iskander

doi:10.1016/j.egyr.2019.11.014

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…Cyclists don't require a streamlined helmet or different clothes to achieve this speed with fairing. Dimensions and geometry of bicycle and cyclist [7] Figure 3 NACA airfoil…”

Section: Discussionmentioning

confidence: 99%

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Numerical Analysis of Fairings for Bicycles

Bhavani¹,

Bhavani²,

Rao³

et al. 2021

Preprint

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Aerodynamics is the study of moving air's properties and the interactions between moving air and solids. Rider gets slammed into air particles while riding that gets compressed once rider hit them and then become spaced out once they flow over the rider. The distinction in atmospheric pressure from your front to your back creates a retardant force. The force that's perpendicular to the oncoming flow direction is the lift force. It contrasts with the drag force. Aerodynamic shapes reduce this pressure drag and lift by minimizing that difference in pressure and allowing the air to flow more smoothly over your front, reducing the low-pressure wake behind the cyclist and reducing this drag, and increasing speed in this paper; fairings designed. NACA airfoil as a base, fairings are designed using CATIA.CFD analysis is carried out on the bicycle with a fairing to calculate drag and lift force. As the position of cyclists isn't modified and due to fairing, the air resistance reduces, which may increase the comfort level of cyclists. From this analysis, the economical fairing can be determined, facilitating additional drag and producing less lift.

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“…Cyclists don't require a streamlined helmet or different clothes to achieve this speed with fairing. Dimensions and geometry of bicycle and cyclist [7] Figure 3 NACA airfoil…”

Section: Discussionmentioning

confidence: 99%

“…This fairing covers half of the wheel and the whole upper body, allowing reducing turbulence created at the spokes of the bicycle. Dimensions and geometry of bicycle and cyclist [7] Figure 3 NACA airfoil Figure 4 Lengths of the bicycle…”

Section: E Streamline and Contour Representation For Third Fairingmentioning

confidence: 99%

Numerical Analysis of Fairings for Bicycles

Bhavani¹,

Bhavani²,

Rao³

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…In order to evaluate the influence of the field wind environment on cross-country skiing athletes' performance, the first step is to obtain the wind-induced aerodynamic drag of the athletes in the ski field wind environment. In recent years, many researchers have carried out research work on the acquisition of athletes' wind-induced aerodynamic drag through numerical calculation methods based on computational fluid dynamics (CFD) and wind tunnel experiments [6][7][8][9]. Chen [10] used steady and unsteady models to simulate 2D athlete models, and the results indicated that wind and posture affect the aerodynamic performance of a skier during the flight stage.…”

Section: Introductionmentioning

confidence: 99%

A Method for Evaluating the Influence of the Field Wind Environment on Cross-Country Skiing Performance

Zhu

et al. 2022

Applied Sciences

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Aerodynamic drag plays an important role in high-speed skiing. The wind-induced thrust or resistance of athletes, the sliding speed, and the work to overcome the aerodynamic drag are greatly affected by wind; therefore, reducing wind-induced drag is a focus of sport science. This paper proposes a method for evaluating the influence of wind on cross-country skiing performance, which is based on the athlete’s aerodynamic-drag-work relative to the environmental wind field and the establishment of a racetrack wind field model. Aiming at an athlete’s typical sport posture in the Yabuli Ski Field, the impact of field wind on the skier’s speed, the work done by the athlete to overcome aerodynamic drag, and the ratio of the field wind-induced work to the athlete’s total work are analyzed. Through the analysis of the athlete’s work to overcome aerodynamic drag and the wind resistance energy dissipation ratio in three training cases, it is shown that the field wind has a great influence on the athlete’s performance during sliding, which verified the effectiveness of the method. This method will provide coaches and sport researchers with accurate wind resistance energy dissipation data and provide a scientific basis for routine athletic training.

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