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Keywords: simulation
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Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-003
... be an improvement over existing methods, simulating the 6 degrees of freedom motions and accelerations. The unique un-restrained sailing test approach uses a mast mounted air screw device to simulate the aerodynamic propulsion from the sails allowing a scaled model of the yacht to be tested at a range...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-007
...-consuming task. A dynamic velocity prediction program (DVPP) for the AC50 is therefore developed to assess the dynamic stability of different foil configurations and to simulate and optimize maneuvers. The goal is to evaluate certain design ideas and maneuvering procedures with this simulator so...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-009
... inconsistent data from past experiments and simulations, and to provide guidance for future model testing and sail design. flay reynolds number boundary layer leading-edge vortex wind tunnel downwind sail reservoir surveillance pressure distribution experiment upstream oil & gas vortex aoa...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-010
... intelligence power consumption rudder precision controller energy aware autopilot energy consumption simulation autopilot consumption disturbance constraint case study An Energy Aware Autopilot for Sailboats Mathilde Tréhin, Université de Bretagne Sud/Madintec, Lorient, France Johann Laurent...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-002
... and displacement. Response surfaces are generated from a 64 data point array of RANS VOF simulations. upstream oil & gas measured data coefficient sensor hull distortion vpp simulation contour boat speed correction shape stripe standard deviation awa stripe anemometer ran rudder angle...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-009
... dynamic results that cannot be accurately predicted with a steady approach. These results are therefore valuable for future FSI numerical tools validation in unsteady conditions. simulation oscillation upstream oil & gas design shape coefficient amplitude frequency cf sheet yacht sail...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-010
... in the literature. The wave excitation is limited to the calculation of Froude - Krylov forces. logic & formal reasoning spyrou yacht wave position sailing yacht logic programming calculation excitation coefficient artificial intelligence simulation hull proceedings formulation element...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-012
... of an A-Class catamaran is simulated by using the RANSE software FineMarine with its volume of fluid method. The C-shaped hydrofoil is analysed for one speed at Froude Number 7.9 and various angles of attack (AoA). The rake was defined and a leeway angle was applied to simulate realistic set ups...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-010
... are selected for the comparison, and both shapes are analyzed with numerical simulations and physical experiments. We study the change in sailboat performance due to the different aerodynamic and material properties of the rigging. A velocity prediction program (VPP) is used to quantify the performance change...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-007
... by simplified theoretical or empirical models potentially neglecting complex physical phenomena. The paper proposes a method circumventing these inaccuracies. It is based on the idea to directly derive Sailing Yacht performance from a RANSE flow simulation. This is done by coupling the prediction of sail forces...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-013
... Virtual Sailing (VS) has been producing the world’s only ride-on sailing simulator for 10 years. Based on fundamental principles of sailing dynamics the underlying simulation has shown great robustness permitting significant R&D to be performed and retrofitted to existing simulators...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-002
... of varying stresses and strains due to the motion and inertia. The simulation results from the FSI model compare very well with the experimental data for steady sailing conditions. For the unsteady conditions obtained in head waves, the first results show a good agreement between measurements and simulation...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-006
... and explore how the industry can improve these tools in the future. open source developer artificial intelligence simulation software engineering turkshead framework knowledge management platform open source software vpp software development application requirement spreadsheet yacht...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-010
... to develop and validate a windheel model, as well as understand the nature of how these vessels respond to different wind situations. The CFD simulations are used to assess errors in measured wind angle and direction, and the experimental data are used to establish the CFD model uncertainty. The model has...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-005
... A new method to simulate laminar-turbulent transition has been used to study flow around sailing yacht appendages. Based on an empirical correlation, the method allows to predict transitional flow in a fully 3Denvironment using unstructured grids and massive parallelization. Reynolds number...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-007
... yacht history canoe body artificial intelligence simulation prediction geometry machine learning displacement optimization coefficient objective function autopilot proceedings symposium wind speed equation true wind angle maneuver boat THE 18th CHESAPEAKE SAILING YACHT SYMPOSIUM...
Proceedings Papers

Paper presented at the SNAME 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-012
... In the present study the emphasis has now been put on part will be more extensively elaborated so that a wider variety formulating a set of equations containing only coefficients, of sail plans may be dealt with. which could be determined using the design data of the ship A number of simulations with the model...
Proceedings Papers

Paper presented at the SNAME 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-002
... A time domain maneuvering simulation of an IACC class yacht suitable for the analysis of unsteady upwind sailing and tacking is presented. The simulation code (RODAN) considers motions in six degrees of freedom. The hydrodynamic and aerodynamic loads are calculated primarily with unsteady...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-015
... Numerical simulation of maneuvering of “Naniwa-maru" was performed to clarify the maneuver characteristics in particular with wearing operation. "Naniwa-maru" belongs to a type called Higaki-kaisen, and the Higaki-kaisen is a type of the more generic class of vessels named "Bezai-ship". Bezai...
Proceedings Papers

Paper presented at the SNAME 15th Chesapeake Sailing Yacht Symposium, January 26, 2001
Paper Number: SNAME-CSYS-2001-007
... tool for racing yacht designers. This paper describes the development of a time­domain simulation for predicting the performance of yachts sailing in irregular seas for apparent wind angles between 90 and 180 degrees. The simulation output may be used to either directly compare different designs...

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