Off-Wind Sail Performance Prediction and Optimisation

Wright, A.M.; Claughton, Andrew; Paton, Jonathan; Lewis, R. I.; TotalSim, UK

doi:10.3940/rina.innovsail.2010.07

Cited by 7 publications

(1 citation statement)

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“…On the other hand, according to Viola et al [39], LES and DES techniques will commonly be used in sail aerodynamics but they are not widely used yet. There is a recent publication [40] in which a steady-state RANS approach is compared with a transient DES approach for a downwind condition. It is concluded that the ability of DES to capture the transient and separated flows could be outstanding in the accurate modeling and performance prediction of yachts for the near future.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Numerical and Experimental Studies of Sail Aerodynamics

Alza¹

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The purpose of this investigation was the determination of the aerodynamic performance of sails and gain knowledge of the phenomena involved in order to improve the aerodynamic characteristics. In this research, the airflow around different sails in four scenarios was studied.The method to analyze these scenarios was the combination of numerical simulations and experimental tests by taking advantage of the best of each tool. Two different Computational Fluid Dynamic codes were utilized: the ANSYS-CFX and the CD-Adapco's STAR-CCM+. The experimental tests were conducted in the Atmospheric Boundary Layer Wind Tunnel at the Universidad de Granada (Spain), the Twisted Flow Wind Tunnel at the University of Auckland (New Zealand

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Section: Numerical Simulationsmentioning

confidence: 99%

Numerical and Experimental Studies of Sail Aerodynamics

Alza¹

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Numerical Simulation of Sailing Boats: Dynamics, FSI, and Shape Optimization

Lombardi

Parolini

Quarteroni

et al. 2012

Springer Optimization and Its Applications

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The numerical simulation of free-surface flows around sailing boats is a complex topic that addresses multiple mathematical tasks: the correct study of the flow field around a rigid hull, the numerical simulation of the hull dynamics, the deformation of the sails and appendages under transient external conditions like gusts of wind or wave patterns and, overall, the coupling among all these components. In this paper, we present some recent advances that have been achieved in different research topics related to yacht design and performance prediction. In particular, we describe the numerical algorithms that have been developed in the framework of open-source libraries for the simulation of free-surface hydrodynamics and boat dynamics, as well as for the analysis of the fluid-structure interaction between wind and sails. Moreover, an algorithm for shape optimization, based on the solution of the adjoint problem and combined with the Free Form Deformation (FFD) method for the shape parametrization and mesh motion, is presented and discussed. Theoretical and methodological aspects are described and the first preliminary results are reported.

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The hydrodynamic flow around a yacht keel based on LES and DES

Mylonas

Sayer

2012

Ocean Engineering

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Off-Wind Sail Performance Prediction and Optimisation

Cited by 7 publications

References 0 publications

Numerical and Experimental Studies of Sail Aerodynamics

Numerical and Experimental Studies of Sail Aerodynamics

Numerical Simulation of Sailing Boats: Dynamics, FSI, and Shape Optimization

The hydrodynamic flow around a yacht keel based on LES and DES

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