An Aerodynamic Study of Bicycle Wheel Performance Using CFD

Godo, Matthew N.; Corson, David; Legensky, Steve M.

doi:10.2514/6.2009-322

Cited by 18 publications

(19 citation statements)

References 16 publications

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“…AcuSolve is a general purpose CFD flow solver that is used in a wide variety of applications and industries such as automotive, off-shore engineering, electronics cooling, chemical mixing, bio-medical, consumer products, national laboratories, and academic research 11,13,14,15,16 . The flow solver is architected for parallel execution on shared and distributed memory computer systems and provides fast and efficient transient and steady state solutions for standard unstructured element topologies.…”

Section: A Cfd Solver Descriptionmentioning

confidence: 99%

Investigating Aeroelastic Performance of Multi-Mega Watt Wind Turbine Rotors Using CFD

Corson¹,

Griffith²,

Ashwill³

et al. 2012

53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials ConferenceSelf Cite

17
1
19
0

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Recent trends in wind power technology are focusing on increasing power output through an increase in rotor diameter. As the rotor diameter increases, aeroelastic effects become increasingly important in the design of an efficient blade. A detailed understanding of the fluid elastic coupling can lead to improved designs; yielding more power, reduced maintenance, and ultimately leading to an overall reduction in the cost of electricity. In this work, a high fidelity Computational Fluid Dynamics (CFD) methodology is presented for performing fully coupled Fluid-Structure Interaction (FSI) simulations of wind turbine blades and rotors using a commercially available flow solver, AcuSolve. We demonstrate the technique using a 13.2 MW blade design.

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Section: A Cfd Solver Descriptionmentioning
confidence: 99%

Investigating Aeroelastic Performance of Multi-Mega Watt Wind Turbine Rotors Using CFD
Corson¹,
Griffith²,
Ashwill³
et al. 2012
53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials ConferenceSelf Cite
17
1
19
0
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“…Godo et al, in particular, have produced some of the most extensive CFD analyses of wheels [34,35] and the interaction between the front wheel, the fork, and the down tube [74]. Going beyond the capabilities of wind tunnel analysis, Godo et al [34,35] were able to resolve the contributions of the various components of a wheel-hub, spokes, and rim-to the overall drag of the system. These studies simulated the flow around the wheel in isolation of the bicycle-rider system.…”

Section: Wheelsmentioning
confidence: 99%

“…As outlined in a review of the impact of CFD in sport by Hanna [33], CFD is being increasingly used to solve aerodynamics problems in sports ranging from car racing such as formula one, yacht racing, swimming, soccer, cricket, and cycling. In recent years, numerical codes have been used to simulate flows around bicycle components such as wheels [34,35] and investigate the aerodynamics of different rider positions [27,36].…”

Section: Computational Fluid Dynamicsmentioning
confidence: 99%

Riding against the wind: a review of competition cycling aerodynamics
Crouch
¹
,
Burton
²
,
LaBry
³

et al. 2017
Sports Eng
92
1
84
0
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Aerodynamics has such a profound impact on cycling performance at the elite level that it has infiltrated almost every aspect of the sport from riding position and styles, equipment design and selection, race tactics and training regimes, governing rules and regulations to even the design of new velodromes. This paper presents a review of the aspects of aerodynamics that are critical to understanding flows around cyclists under racing conditions, and the methods used to evaluate and improve aerodynamic performance at the elite level. The fundamental flow physics of bluff body aerodynamics and the mechanisms by which the aerodynamic forces are imparted on cyclists are described. Both experimental and numerical techniques used to investigate cycling aerodynamic performance and the constraints on implementing aerodynamic saving measures at the elite level are also discussed. The review reveals that the nature of cycling flow fields are complex and multi-faceted as a result of the highly three-dimensional and variable geometry of the human form, the unsteady racing environment flow field, and the non-linear interactions that are inherent to all cycling flows. Current findings in this field have and will continue to evolve the sport of elite cycling while also posing a multitude of potentially fruitful areas of research for further gains in cycling performance.

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“…AcuSolve is a general purpose CFD flow solver that is used in a wide variety of applications and industries such as automotive, off-shore engineering, electronics cooling, chemical mixing, bio-medical, consumer products, national laboratories, and academic research 7,8,9,10,11,12 . The flow solver is architected for parallel execution on shared and distributed memory computer systems and provides fast and efficient transient and steady state solutions for unstructured element topologies.…”

Section: A Cfd Solver Descriptionmentioning
confidence: 99%

“…The NREL rotor simulations were run using all 6 turbulence/transition model combinations at wind speeds corresponding to 5,7,10,13,15,20, and 25 m/s. Each case was iterated to convergence using the same solution strategy as identified for the airfoil simulations.…”

Section: E Comparison Against Experimental Datamentioning
confidence: 99%

A Comparative Assessment of Correlation-based Transition Models for Wind Power Applications
Corson
¹
,
Zamora
²
,
Medida
³

2016
34th AIAA Applied Aerodynamics Conference
3
0
1
0
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The turbulent transition process plays a critical role in the aerodynamic design of wind turbine rotors. Analysis tools such as Computational Fluid Dynamics must accurately predict the boundary layer transition process to be successfully applied to wind turbine design. Early work in the transition modeling field, performed by Langtry and Menter, focused on the coupling of a local correlation based transition model with the SST turbulence closure 1 . This transition modeling approach, referred to as the γ-Reθ model, proved to be very successful in a number of industries, wind power included. As usage of the model diversified, it has been coupled with other turbulence closures and it has also been simplified into a new model known as the γ model, which was recently proposed by Menter 2 . In this work, the two most prominent transition models, namely the γ-Reθ and γ models, are evaluated in conjunction with the SST and Spalart-Allmaras turbulence closures using the CFD solver AcuSolve. These models are validated on a series of test cases relevant to wind turbine blade design in order to assess the accuracy and simulation efficiency of each approach.

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An Aerodynamic Study of Bicycle Wheel Performance Using CFD

Cited by 18 publications

References 16 publications

Investigating Aeroelastic Performance of Multi-Mega Watt Wind Turbine Rotors Using CFD

Investigating Aeroelastic Performance of Multi-Mega Watt Wind Turbine Rotors Using CFD

Riding against the wind: a review of competition cycling aerodynamics

A Comparative Assessment of Correlation-based Transition Models for Wind Power Applications

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