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. 2014 Jan 12:2014:818132.
doi: 10.1155/2014/818132. eCollection 2014.

Experimental investigation of the flow on a simple frigate shape (SFS)

Rafael Bardera Mora  1
Affiliations

Experimental investigation of the flow on a simple frigate shape (SFS)

Rafael Bardera Mora. ScientificWorldJournal. .

Abstract

Helicopters operations on board ships require special procedures introducing additional limitations known as ship helicopter operational limitations (SHOLs) which are a priority for all navies. This paper presents the main results obtained from the experimental investigation of a simple frigate shape (SFS) which is a typical case of study in experimental and computational aerodynamics. The results obtained in this investigation are used to make an assessment of the flow predicted by the SFS geometry in comparison with experimental data obtained testing a ship model (reduced scale) in the wind tunnel and on board (full scale) measurements performed on a real frigate type ship geometry.

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Figures

Figure 1
Figure 1
Two-dimensional flight deck flow field.
Figure 2
Figure 2
Three-dimensional flight deck flow field.
Figure 3
Figure 3
Simple frigate shape (SFS) dimensions.
Figure 4
Figure 4
SFS model in the test section of the wind tunnel.
Figure 5
Figure 5
Flow pattern on the SFS flight deck surface.
Figure 6
Figure 6
Velocity map in the vertical plane of symmetry of the SFS flight deck.
Figure 7
Figure 7
Velocity map in the horizontal plane of the SFS flight deck (z/H = 0.5).
Figure 8
Figure 8
Velocity map in the horizontal plane of the SFS flight deck at 10° of angle of incidence (z/H = 0.5).
Figure 9
Figure 9
Velocity map in the horizontal plane of the SFS flight deck at 20° of angle of incidence (z/H = 0.5).
Figure 10
Figure 10
Nondimensional velocity u^ as a function of relative wind angle.
Figure 11
Figure 11
Nondimensional velocity v^ as a function of relative wind angle.
Figure 12
Figure 12
Turbulence intensity of the u velocity component as a function of relative wind angle.
Figure 13
Figure 13
Turbulence intensity of the v velocity component as a function of relative wind angle.
Figure 14
Figure 14
Sketch of the ship model.
Figure 15
Figure 15
Comparison of the longitudinal nondimensional velocity.
Figure 16
Figure 16
Comparison of the lateral nondimensional velocity.
See this image and copyright information in PMC

References

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