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Keywords: resistance
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Proceedings Papers

Paper presented at the SNAME 24th Chesapeake Sailing Yacht Symposium, June 10–11, 2022
Paper Number: SNAME-CSYS-2022-011
... lake racer resistance sailing mode heel angle force module yacht boat speed speed polar hydrofoil coefficient configuration marine transportation wetted surface area hull vpp trim parameter vpp model The aim of the this paper is to develop an accurate and robust six degrees...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-001
... the carriage and shore-based equipment. Further details are available in Newcastle Towing Tank, 2018 and Table 1. Figure 1 Photograph of the Newcastle University Towing Tank The Towing Tank is used mainly for calm water, wave resistance and sea-keeping experiments. Models are towed using a monorail carriage...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-002
... requirements. An outline of the FloSim method is presented; it is an unsteady, time-stepping code with a coupled integral boundary layer analysis for viscous effects such as skin friction resistance and boundary layer displacement effect. The free surface wave development uses a non-linear mixed Eulerian...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-003
... tool to assess controllability and seakeeping characteristics of multiple configurations (e.g. hull shape, appendages, inertias) by quantifying induced motions and providing an estimate of added resistance in waves. Non-linear attitudes such as surfing can be investigated. Free-running model testing...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-014
... performance, sail performance, steady sailing performance and maneuvering performance. calculation high-speed sailing kanazawa institute jib variation sailing resistance wind speed wetted area solidfromphoto coefficient rudder twa center board thrust spinnaker heel angle olympic games...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-001
... upstream oil & gas resistance investigation artificial intelligence constraint wake sheet span optimization problem vorticity coefficient daggerboard solver vortex filament drag coefficient wind speed rudder wing free vortex filament reservoir simulation catamaran boat...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-011
... the variation of the forces on a sailing yacht hull as speed, heel and leeway change. Finally, discussion will be made on how this first phase of the project may be used to inform handicap rule makers. yaw angle hull effective draft tank test resistance canoe body only ratio plot leeway cfd...
Proceedings Papers

Paper presented at the SNAME 21st Chesapeake Sailing Yacht Symposium, March 15–16, 2013
Paper Number: SNAME-CSYS-2013-001
... attitude and wave pattern have been series of 4 geosim models ranging from 1/10 scale to 1/4 investigated. This paper focuses on the experimental scale of a TP52 yacht. Variation of resistance components investigations both in the upright and heeled conditions. due to viscous and wave sources, heel...
Proceedings Papers

Paper presented at the SNAME 21st Chesapeake Sailing Yacht Symposium, March 15–16, 2013
Paper Number: SNAME-CSYS-2013-009
... resistance preliminary results, and the scope of future work being Crr Residuary resistance coefficient initiated or planned. Although the schooner described Cx Driving force coefficient herein might be considered old school, the technical Cy Heeling force coefficient approach is absolutely relevant to any...
Proceedings Papers

Paper presented at the SNAME 21st Chesapeake Sailing Yacht Symposium, March 15–16, 2013
Paper Number: SNAME-CSYS-2013-010
... A set of towing tank tests was undertaken on a 1:4-model-scale high-performance small sailing boat, which was a candidate for the 2016 Olympic games. The resistance, sink and trim were measured and uncertainty analysis was completed. The boat was tested for different longitudinal positions...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-006
... experiments using extreme shifts in vertical volume distribution have been performed and compared with numerical predictions. Limits on submergence beneath which appendages effectively “see” no wave resistance have been established based on numerical and experimental results. force balance keel free...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-012
... The principal objective of this research was to determine the merit of transom lift devices on high-performance sailing craft. Transom lift devices modify running trim and also produce several other less-obvious hydrodynamic effects, all of which alter total resistance, thereby affecting...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-005
... been produced. The end CT residuary resistance coef cient: of the con dentiality agreement for the experimental data CR = RR/(0.5 v2SC ) produced in that time allows now a deep analysis into the CT total resistance coef cient: different designs still available at INSEAN. The large size CT = RT /(0.5...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-003
... issues related to (a) mesh generation, (b) solution, discretization, and free surface capturing algorithms, (c) turbulence modelling, (d) rigid body dynamics and sail force models. upstream oil & gas cfd code mesh evaluation reservoir simulation resistance free surface vertical force...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-015
... In upwind sailing conditions, bulbs of canting keel sailboats operate close to the water surface and therefore induce non-negligible changes in the wave system, thus influencing the wave making resistance of a sailboat. The bulb could produce relatively positive as well as negative effects...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-008
... angle model test dynamic effect wind force mast unsteady condition fluid dynamics resistance basin wave period wave condition sail arrangement marin THE 18th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2007 Hydrodynamic advice of Sailing Yachts through Seakeeping Study...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-004
... on the measured results the the previous developped formulation within the DSYHS for the keel residuary resistance is validated and a new formulation for the downwash behind the keel is presented. In addition the expression within the DSYHS for the sideforce on the yacht is improved for higher aspect ratios. 1...
Proceedings Papers

Paper presented at the SNAME 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-012
... with the results obtained during a series of full scale measurements. side force yacht appendage sway equation simulation rudder coefficient masayuma maneuver artificial intelligence resistance hull fn 0 formulation approximation tc bk mathematical model expression delft systematic yacht...
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 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-005
... examples are shown: a study of the impact of the ACC V4/V5 rule changes and a comparison of a canting keel and a conventional keel yacht. artificial intelligence efficiency boat speed tank test result ballast keel resistance coefficient keel configuration force coefficient test run...

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