1,721,176 research outputs found
An investigation of aerodynamic force modelling for IMS rule using wind tunnel techniques
Full text linkWind tunnel techniques for investigation and optimization of sailing yachts aerodynamics
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Realizzazione di un Dispositivo per la Generazione di “Twisted Flow” per prove su imbarcazioni a vela in Galleria del Vento
No full textAnalisi delle caratteristiche del flusso per prove di imbarcazioni a vela in Galleria del Vento su modelli in scala
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PIV dataset for near wake of spinnaker - Vortex flows of downwind sails
No full textThree different spinnaker twist prototypes were manufactured (“Geometries” dataset) and their near wake was studied with Particle Image Velocimetry (PIV). The reference sail (high twist geometry) was recorded in uniform flow in a water flume (“Near Wake” dataset). This geometry provided the highest maximum driving force, assuming an apparent wind angle of 55 deg. The data set contains 5 particle image velocimetry measurement planes along the span of the sail. The planes are labelled A, B, C, D and E and are located at 7/8th, 5/6th, 3/4th, 1/2th and 1/4th the distance from the bottom of the sail to the tip. A total of 500 images are recorded per plane. The reference geometry can be found in Arredondo-Galeana and Viola, in OE, 2018. The top planes of the three different twist geometries (“NearWake_TopPlanes” dataset) were subsequently studied to assess the influence of a twisted inflow. Twist influences secondary vorticity production on the surface of the sail and can be used to enhance the driving force of downwind sails. Further details can be found in the PhD thesis from Abel Arredondo-Galeana, “A study of the vortex flows of downwind sails”, available at the Edinburgh Research Archive repository. A manuscript describing the findings of this research is in preparation.Arredondo Galeana, Abel; Viola, Ignazio Maria. (2020). PIV dataset for near wake of spinnaker - Vortex flows of downwind sails, [dataset]. University of Edinburgh. School of Engineering
PIV dataset for 'The leading-edge vortex of yacht sails' (OE, Arredondo-Galeana and Viola, 2018, Fig. 9, 10, 11, 12)
No full textMatlab files for Figures 9, 10 and 11 of journal paper "The leading-edge vortex of yacht sails" of article in press in Ocean Engineering. All velocity values to be normalised with Ufreestream = 0.114 m/s, x and y data in mm. 1) Fig9_Averaged_Flow_Fields data set contains the averaged velocity fields of planes A, B and C in x,y,u,v format (117649 rows, 1 column or a 343x343 matrix). 2) Fig10_Fig11_Instantaneous_Flow_Fields data set contains the instantaneous velocity fields of planes A, B and C in x,y,u,v format (117649 rows, 306 columns or a 343x343x306 matrix). 3) Fig10_Fig11_Gamma2_Contours contains the Gamma2 contours and the subtracted flow field for planes A, B and C, presented in Fig 10 and Fig 11. An additional XY dataset is provided for providing a reference plane. 4) Supplementary material in PDF format for Derivation_of_kappa. 5) Supplementary material in PDF format for Gamma2contours used for kappas used in Fig12. 6) Supplementary material in PDF.format for Fig12 calculated valuesArredondo Galeana, Abel; Viola, Ignazio Maria. (2018). PIV dataset for 'The leading-edge vortex of yacht sails' (OE, Arredondo-Galeana and Viola, 2018, Fig. 9, 10, 11, 12), [dataset]. University of Edinburgh. http://dx.doi.org/10.7488/ds/2328
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