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Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-010
... method variation contribution application downwind case maneuvering motion equation THE 22ND CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2016 Towards a ew Mathematical Model for Investigating Course Stability and Maneuvering Motions of Sailing Yachts Manolis Angelou, National...
Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-013
... stability limitation oursolver free surface yacht iteration face value star-ccm 0 volume fraction reconstruction reservoir simulation hull star-ccm solver interface timestep gradient equation THE 22nd CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2016 Advanced CFD...
Proceedings Papers

Paper presented at the SNAME 21st Chesapeake Sailing Yacht Symposium, March 15–16, 2013
Paper Number: SNAME-CSYS-2013-003
... in the center plane at an angle to the z axis are 1/kpz Z Y Ixx = I pxCos2 + I pz Sin2 Izz = I pxSin2 + I pzCos2 (3) I = I pxSin2 ( + ) + I pzCos2 ( + ) 1/kpy These equations can be solved for , Ipx, and Ipz to give10,1 1/kpx ( )Tan2 = I IxxSin2 IzzCos2 X ( Ixx Izz ) Sin Cos I px = Ixx...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-007
... with the hydrodynamic forces calculated by the flow code and solving the resulting imbalance in the equations of motion in the RANSE solver. The paper discusses implementation steps for the inclusion of sail forces and body motion into the flow code as well as calculation and grid setup. Results of the method...
Proceedings Papers

Paper presented at the SNAME 20th Chesapeake Sailing Yacht Symposium, March 18–19, 2011
Paper Number: SNAME-CSYS-2011-001
... resolution computational framework aspect ratio performance sailing yacht solver mesh & al configuration machine learning reservoir simulation objective function convergence camber equation mainsail THE 20th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2011...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-007
... contribution membrane upstream oil & gas time step fiber geometry maskew gradient reservoir simulation yacht boundary condition vector displacement effect grid equation artificial intelligence calculation free surface coefficient configuration separation THE 19th CHESAPEAKE SAILING...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-012
... % of what strip theory predicts. low apparent wind angle aerodynamic model headsail strip theory side force experiment genoa sail force mainsail apparent wind angle wind tunnel test auckland inertia equation yacht coefficient drive force wind angle THE 19th CHESAPEAKE SAILING...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-003
... froude number yacht icare reva length froude number hull computation configuration solver equation tank test isis THE 19th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS, MARYLAND, MARCH 2009 CFD-Based Hydrodynamic Analysis of High Performance Racing Yachts Len Imas, Associate Professor...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-005
... and operations transition turbulence intensity investigation kinetic energy destruction term calculation ballast bulb turbulent flow variant reynolds number equation benchmark bulb momentum thickness reynolds number shear stress bulb length THE 18th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-014
.... upstream oil & gas cfd simulation stability sail trim interaction apparent wind angle knot heel angle topsail niagara square sail sail configuration configuration ship side force coefficient staysail equation wind speed THE 18th CHESAPEAKE SAILING YACHT SYMPOSIUM ANNAPOLIS...
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 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-011
... that provide good starting points for a design effort. Thus, in a matter of minutes the user can examine an alternate hull shape while keeping selected hull form parameters constant. hull outline hull b-spline curve example hull equation overhang polygon hull form parameter hull line deck plan...
Proceedings Papers

Paper presented at the SNAME 18th Chesapeake Sailing Yacht Symposium, March 2–3, 2007
Paper Number: SNAME-CSYS-2007-001
... with sailing coaches. The latter issue, the mechanical side of the problem, is analysed by solving yacht equations of motions in the time domain; crew inputs in terms of yacht steering and sail trim are considered. The paper presents results from simulations in which the yacht-crew system can sail a racecourse...
Proceedings Papers

Paper presented at the SNAME 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-012
... of Technology E.J. de Ridder, MARIN, Wageningen Summary describing the maneuvering behavior of a sailing yacht most of the necessary hydrodynamic coefficients in the equations were In the present report an extension of the mathematical model for determined using dedicated experiments, such as forced the tacking...
Proceedings Papers

Paper presented at the SNAME 17th Chesapeake Sailing Yacht Symposium, March 4–5, 2005
Paper Number: SNAME-CSYS-2005-014
... were used as a baseline. Finally, validation and verification was performed with the shareware program PCSAIL. load cell knot sail coefficient daggerboard towboat resistance setup tow test twist parameter towline coefficient prediction program wind speed equation worksheet...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-015
...-ship are typical Japanese sailing traders in the 18th to the mid- 19th century which have different appearance and construction from those of Western tall ships. The present paper shows the numerical simulation of her wearing operation, and the results compared with the measured data. The equations...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-007
... The application of Computational Fluid Dynamics simulations based on the Reynolds Averaged Navier- Stokes (RANS) equations to the design of sailing yachts is becoming more commonplace, particularly for the America's Cup. Drawing on the experience of the Ecole Polytechnique Fédérale de Lausanne...
Proceedings Papers

Paper presented at the SNAME 15th Chesapeake Sailing Yacht Symposium, January 26, 2001
Paper Number: SNAME-CSYS-2001-002
... parameter twist which correctly accounts for the practice of allowing the head of a sail to twist off in order to reduce heeling moment. equilibrium heel angle sail area apparent wind angle coefficient prediction program upwind sail reef yacht sail trim equation - t<.D . . 1 0 c...
Proceedings Papers

Paper presented at the SNAME 14th Chesapeake Sailing Yacht Symposium, January 29–30, 1999
Paper Number: SNAME-CSYS-1999-014
...) will be presented. experiment sailing yacht ship hydromechanic lab hydrodynamic force systematic series delft systematic yacht hull series dsyh laboratory delft univ larger variety assessment hull resistance formulation equation wSAILING. HE 14th CHESAPEAKE SAILING YACHT SYMPOSIUM...
Proceedings Papers

Paper presented at the SNAME 13th Chesapeake Sailing Yacht Symposium, January 24–25, 1997
Paper Number: SNAME-CSYS-1997-016
... equation tunnel two-variable method THE THJRTEENTH CHESAPEAKE SAILING YACHT S Experimental Determination of Sail Performance and Blockage Corrections Dr. Robert Ranzenbach~ GLM Wind Tunnel, Univ. of Maryland, College Park, Maryland, USA Chris Mairs, GLM Wind Tunnel, Univ. of Maryland, College Park...

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