FLUID MECHANICS ANALYSIS OF A SAILBOAT MAST

Risultato della ricerca: Other

Abstract

This study aims to analyze different configurations of mast-sail coupling of a boat with single sail and wishbone rig to vary the shape of the cross-section of the mast that is to assess the influence of the mast on the performance of the sail. The analysis is performed with four several shapes of the mast cross section and several angles of attack to the wind. The numerical simulations on different geometries show an improvement by using a wing shape for the mast rotated in the direction of the wind, in all the corners. This solution allows to rotate rigidly the system mast-boom-sail in order to maintain the same angle of incidence and maximize the efficiency of the sail. The efficiency increase arrives to 73% compared to fixed wing contour profile that is the less efficient for every corner of the wind. The differences among the circular, elliptical and fixed wing contours are not particularly large, but the advantage of rotating wing profile, compared to all the others, is extremely high. Numerical values of lift and drag are congruent with the calculated values. The results of 3D numerical analysis on the rotating wing contour confirm the results of two-dimensional analysis.
Lingua originaleEnglish
Pagine315-324
Numero di pagine9
Stato di pubblicazionePublished - 2009

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Sailing vessels
Fluid mechanics
Fixed wings
Boats
Angle of attack
Drag
Numerical analysis
Geometry
Computer simulation

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FLUID MECHANICS ANALYSIS OF A SAILBOAT MAST. / Virzi' Mariotti, Gabriele; Milone, Sergio.

2009. 315-324.

Risultato della ricerca: Other

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title = "FLUID MECHANICS ANALYSIS OF A SAILBOAT MAST",
abstract = "This study aims to analyze different configurations of mast-sail coupling of a boat with single sail and wishbone rig to vary the shape of the cross-section of the mast that is to assess the influence of the mast on the performance of the sail. The analysis is performed with four several shapes of the mast cross section and several angles of attack to the wind. The numerical simulations on different geometries show an improvement by using a wing shape for the mast rotated in the direction of the wind, in all the corners. This solution allows to rotate rigidly the system mast-boom-sail in order to maintain the same angle of incidence and maximize the efficiency of the sail. The efficiency increase arrives to 73{\%} compared to fixed wing contour profile that is the less efficient for every corner of the wind. The differences among the circular, elliptical and fixed wing contours are not particularly large, but the advantage of rotating wing profile, compared to all the others, is extremely high. Numerical values of lift and drag are congruent with the calculated values. The results of 3D numerical analysis on the rotating wing contour confirm the results of two-dimensional analysis.",
keywords = "CFD, ROTATING MAST, SAILBOAT MAST",
author = "{Virzi' Mariotti}, Gabriele and Sergio Milone",
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AU - Virzi' Mariotti, Gabriele

AU - Milone, Sergio

PY - 2009

Y1 - 2009

N2 - This study aims to analyze different configurations of mast-sail coupling of a boat with single sail and wishbone rig to vary the shape of the cross-section of the mast that is to assess the influence of the mast on the performance of the sail. The analysis is performed with four several shapes of the mast cross section and several angles of attack to the wind. The numerical simulations on different geometries show an improvement by using a wing shape for the mast rotated in the direction of the wind, in all the corners. This solution allows to rotate rigidly the system mast-boom-sail in order to maintain the same angle of incidence and maximize the efficiency of the sail. The efficiency increase arrives to 73% compared to fixed wing contour profile that is the less efficient for every corner of the wind. The differences among the circular, elliptical and fixed wing contours are not particularly large, but the advantage of rotating wing profile, compared to all the others, is extremely high. Numerical values of lift and drag are congruent with the calculated values. The results of 3D numerical analysis on the rotating wing contour confirm the results of two-dimensional analysis.

AB - This study aims to analyze different configurations of mast-sail coupling of a boat with single sail and wishbone rig to vary the shape of the cross-section of the mast that is to assess the influence of the mast on the performance of the sail. The analysis is performed with four several shapes of the mast cross section and several angles of attack to the wind. The numerical simulations on different geometries show an improvement by using a wing shape for the mast rotated in the direction of the wind, in all the corners. This solution allows to rotate rigidly the system mast-boom-sail in order to maintain the same angle of incidence and maximize the efficiency of the sail. The efficiency increase arrives to 73% compared to fixed wing contour profile that is the less efficient for every corner of the wind. The differences among the circular, elliptical and fixed wing contours are not particularly large, but the advantage of rotating wing profile, compared to all the others, is extremely high. Numerical values of lift and drag are congruent with the calculated values. The results of 3D numerical analysis on the rotating wing contour confirm the results of two-dimensional analysis.

KW - CFD

KW - ROTATING MAST

KW - SAILBOAT MAST

UR - http://hdl.handle.net/10447/40982

M3 - Other

SP - 315

EP - 324

ER -