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Keywords: calculation
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Proceedings Papers

Paper presented at the SNAME 24th Chesapeake Sailing Yacht Symposium, June 10–11, 2022
Paper Number: SNAME-CSYS-2022-010
... methods are discussed to calculate the foil forces within the VPP solution loop for fully- or partly-immersed foils. A variety of non-trivial hydrodynamic issues are addressed, including dynamic hull forces and moments when wetted. A practical approach to surface-piercing foil hydrodynamics...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-002
.... In this paper, we present results computed using an advanced Boundary Element Code, FloSim, these calculations being compared against the test matrix of Wide Light measured data and also Star-CCM+ calculated results. Times for computer model preparation and case execution are discussed together with computer...
Proceedings Papers

Paper presented at the SNAME 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-005
... mechanical characterization bend twist coupling layup composite structure stiffness orientation frequency coupling natural frequency displacement hydrofoil vibration test hydrodynamic performance composite layup deformation laminate theory calculation Composite materials...
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 23rd Chesapeake Sailing Yacht Symposium, March 15–16, 2019
Paper Number: SNAME-CSYS-2019-015
...' catamaran is featured. calculation airflow sailing performance consideration configuration catamaran design superstructure recreational catamaran sailing catamaran water part saloon designer displacement demihull transverse yacht requirement catamaran accommodation headroom...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-006
... reservoir simulation calculation experiment fluid dynamics mesh surface streamline auckland edge separation bubble separation bubble pressure coefficient headsail mainsail configuration experimental data upstream oil & gas streamline pressure distribution recirculation...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-010
.... Finite Element Method comprised of two major components: an aerodynamic, Fi Force or moment due to i excitation focused on the calculation of the forces on the sails, taking into account the variation of their shape under wind flow; FN Froude Number and a hydrodynamic one, handling the motion...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-012
... piercing foils often tend to ventilate and cavitate at high speeds. The aim of this work is to define a setup to calculate the hydrodynamic forces on such foils with RANSE CFD and to investigate whether the onset of ventilation and cavitation can be predicted. Therefore a surface piercing hydrofoil...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-013
...; the effect on accuracy, computational time and solver stability will be shown by comparison to standard OF-solvers (interFoam / interDyMFoam) and Star CCM+. The code’s capabilities to simulate complex “real-world” flows are shown on a well-known racing yacht design. calculation interfoammod 0...
Proceedings Papers

Paper presented at the SNAME 21st Chesapeake Sailing Yacht Symposium, March 15–16, 2013
Paper Number: SNAME-CSYS-2013-007
... with somewhat more precision, and TWS True Wind Speed, knots secondly, to develop a calculation tool to better establish V Boat Speed, knots this relationship, and to better anticipate the vessel's over VDC Vertical Distance between CLRg and CEg all sailing behavior. Because of those factors that effect VPP...
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-2011-002
.... apparent wind variation aravanti model international conference simulation oscillation innovation representation artificial intelligence calculation stripe shroud performance sailing yacht navigation parameter information coherence load variation evolution boat phase shift THE 20th...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-007
... of an ultimate objective for a simultaneous aero- POV Position, Orientation, Velocity of Configuration elastic/hydro analysis in a Dynamic Velocity Prediction 6DOF Six Degrees Of Freedom Program (DVPP), that will include a 6DOF motion solver, FS Free Surface and at some point could include calculations in waves...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-002
.... The side force production as function of the leeway and heel played only a very limited role in the present VPP calculations and remained therefore for many years somewhat undervalued. The last years more attention has been paid to the subject in particular caused by the necessity to asses the yaw balance...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-005
...THE 18th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2007 RANSE Calculation of Laminar-to-Turbulent Transition-Flow around Sailing Yacht Appendages Christoph Böhm, R&D-Centre Univ. Applied Sciences Kiel, Yacht Research Unit, Germany Kai Graf, Institute of Naval Architecture...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-002
...THE 18th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2007 Database of Sail Shapes vs. Sail Performance and Validation of Numerical Calculation for Upwind Condition Yutaka Masuyama, Kanazawa Institute of Technology, Japan Yusuke Tahara, Osaka Prefecture University, Japan Toichi...
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 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-009
... Aerodynamic performance of a Japanese traditional square rig, “Bezai-ho”, and a Chinese lug rig, “Shinshi-bo” in Japanese, were studied by means of wind tunnel tests, sea trials and numerical calculations. Sail forces and sail shapes were measured in the wind tunnel tests. A sail dynamometer...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-001
...)-balance of the sailing yacht under under water body of the ship. The problem is consideration in view of the desired performance introduced by the fact that from simple calculations (speed) and safety (maneuverability). neither the exact position of the Center of Lateral Resistance (CLR.) of the forces...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-007
.... The final analyzed. Most of these were evaluated in at least two surface meshes (see Figure 1) contained around 200,000 flow conditions: upwind and downwind. These elements and utilized a combination of both triangular and calculations were used to supply a large variety of quadrilateral elements to provide...

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