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Keywords: prediction
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Proceedings Papers

Paper presented at the SNAME 24th Chesapeake Sailing Yacht Symposium, June 10–11, 2022
Paper Number: SNAME-CSYS-2022-007
... to give fast and accurate predictions of drive force and heeling moment for a twisted inflow. The LL code was verified using experimental data, and showed that with analytical corrections, accurate predictions of lift and induced drag could be obtained. 3D RANS simulations confirmed that the LL model...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-001
... for helping to understand and predict the performance of Polynesian sailing vessels; second, to learn how to use a Towing Tank, as there is not one at the University of Auckland. Thus it was decided that the slender hull tank results would be analysed and written up in a report and paper for their own sake...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-002
... and for an appended configuration in upright and in yaw and heel conditions. The paper also showed a number of comparative predictions by several CFD practitioners; in broad terms, the STAR-CCM+ RANS results by Cape Horn Engineering are perhaps closest to the measured data both in absolute terms and in trends, whilst...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-004
... Experimental measurement and simplified prediction of T-foil performance for monohull dinghies Sandy Day, University of Strathclyde, Glasgow Scotland Margot Cocard, University of Strathclyde, Glasgow Scotland Moritz Troll, University of Strathclyde, Glasgow Scotland Exocet Moth - Photo © Katie...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-003
... optimization problem variance machine learning upstream oil & gas reservoir simulation artificial intelligence merit function sail system prediction iteration turbulence model optimization procedure optimization convergence noise numerical model optima experiment algorithm...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-014
.... Topics considered in this paper include speed prediction, calculation models for folding propellers, and cavitation criteria. calculation tip speed boat speed sailboat efficiency criteria blade pressure coefficient cavitation folding propeller evaluation propeller formula resistance...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-007
... One of the most important tools in today’s sailing yacht design is the Velocity Prediction Program (VPP). VPPs calculate boat speed from the equilibrium of aero and hydrodynamic flow forces. Consequently their accuracy is linked to the accuracy of the aero- and hydrodynamic data used...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-001
... reservoir simulation single rudder constraint spinnaker rudder investigation ac90 yacht froude number variant 3 appendage configuration ruder twin rudder yacht prediction boat speed consequence rudder configuration wind speed This paper describes some CFD and VPP...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-007
... The development of a tool for predicting the dynamic performances of sailing yachts is presented in this paper. After establishing the equations of motion and the coordinate systems, the modeling of the various contributions to forces and moments of such a mechanical system is presented...
Proceedings Papers

Paper presented at the SNAME 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-002
... corrections. Additional aerodynamic load calculations are made to determine the parasitic drag of the rig and hull. air transportation simulation yacht artificial intelligence diffraction load rodan sname resistance prediction chesapeake sailing yacht symposium contribution symposium trial...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-004
... resistance prediction heel angle model 6 model 7 institute ims rule upright residuary resistance variation marine dynamic model 8 froude number boat residuary resistance database model 4 model 5 US Sailing and the Institute for Marine Dynamics (IMD) in St. John’s...
Proceedings Papers

Paper presented at the SNAME 15th Chesapeake Sailing Yacht Symposium, January 26, 2001
Paper Number: SNAME-CSYS-2001-012
... in Osaka district and fully results compared with performance prediction based developed towards the end of that century. They were upon tank tests and wind tunnel studies. According to the usually I00 to 150 tons burden, and plied between Osaka trial the ship could reach as high as 70° to weather on her...
Proceedings Papers

Paper presented at the SNAME 15th Chesapeake Sailing Yacht Symposium, January 26, 2001
Paper Number: SNAME-CSYS-2001-009
... wind direction auckland university accuracy weather condition forecast compute ocean short course racing artificial intelligence prediction optimising yacht route The planning of routes for sailing vessels is subject to uncertainty from the weather. This is particularly...
Proceedings Papers

Paper presented at the SNAME 15th Chesapeake Sailing Yacht Symposium, January 26, 2001
Paper Number: SNAME-CSYS-2001-004
... (RANS) solvers, and saw their first practical application to yacht design during America's Cup XXX. The team of America One, for example, utilized RANS for upwind sail design and VPP aerodynamic force predictions. RANS was also used in the keel design process, and to provide "virtual prototyping...
Proceedings Papers

Paper presented at the SNAME 14th Chesapeake Sailing Yacht Symposium, January 29–30, 1999
Paper Number: SNAME-CSYS-1999-006
... A 5 year research program to investigate the effect of realistic hull form parameters on the added resistance of a yacht in waves is nearing completion. Model experiments and theoretical predictions were carried out and the results are discussed in this paper. Five hull form parameters have...
Proceedings Papers

Paper presented at the SNAME 13th Chesapeake Sailing Yacht Symposium, January 24–25, 1997
Paper Number: SNAME-CSYS-1997-007
... calculation hull yacht architecture drag coefficient ims vpp equilibrium resistance prismatic hull coefficient batoperf side force residuary resistance prediction speed prediction formulation yacht batoperf use gerritsma boat BATOPERF considers the equilibrium...
Proceedings Papers

Paper presented at the SNAME 13th Chesapeake Sailing Yacht Symposium, January 24–25, 1997
Paper Number: SNAME-CSYS-1997-014
...-surface capabilities are also described, notably, steady nonlinear solutions, and novel unsteady partially­nonlinear solutions in the frequency domain. The inviscid flow method treats both free-surface waves and lifting surfaces. The calculations yield predictions for complex interactions at heel and yaw...
Proceedings Papers

Paper presented at the SNAME 13th Chesapeake Sailing Yacht Symposium, January 24–25, 1997
Paper Number: SNAME-CSYS-1997-005
..., it was This paper describes a programme of model tests and decided to compare two designs with the existing ship. computer predictions which was designed to assist in the The test programme proposed by the Wolfson Unit was selection of a hull design for a new ship, and ensure that designed to address the demands...
Proceedings Papers

Paper presented at the SNAME 12th Chesapeake Sailing Yacht Symposium, January 27–28, 1995
Paper Number: SNAME-CSYS-1995-005
... flow field appendage boundary layer interaction mutual interaction drag component prediction layer interaction wave structure aerospace eng ship hull configuration interaction full configuration princeton univ boundary layer total drag computational solution - 0- THE TWELFTH...
Proceedings Papers

Paper presented at the SNAME 11th Chesapeake Sailing Yacht Symposium, January 28–30, 1993
Paper Number: SNAME-CSYS-1993-009
... boeing company prediction wind tunnel data washington perturbation velocity coefficient iacc appendage study simplification free surface usa good agreement seattle winglet interface Experimental and computational studies of several representative IACC appendage geometries were...

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