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Keywords: computation
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Proceedings Papers

Paper presented at the SNAME 22nd Chesapeake Sailing Yacht Symposium, March 18–19, 2016
Paper Number: SNAME-CSYS-2016-016
..., or, when this is not possible, to perform better than some of them. In the past two decades some methods have been proposed to compute optimal strategies for a yacht race. Those strategies are aimed at minimizing the expected time needed to complete the race and are based on the assumption that the faster...
Proceedings Papers

Paper presented at the SNAME 21st Chesapeake Sailing Yacht Symposium, March 15–16, 2013
Paper Number: SNAME-CSYS-2013-004
... approach and shows that a solution, based on UKF filters, provides a relevant method to cope with accuracy and stability in case of sensor data outage. empirical formula displacement wind measurement computation boat motion formula vector matrix wind speed compute boat speed sensor wind...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-004
... linear free surface condition. It is extensively used for industrial projects as for sailing yachts projects (ACC for example). ISIS-CFD is a RANSE solver using finite volume method to build the spatial discretization of the transport equations with unstructured mesh. The latter is able to compute sprays...
Proceedings Papers

Paper presented at the SNAME 19th Chesapeake Sailing Yacht Symposium, March 20–21, 2009
Paper Number: SNAME-CSYS-2009-003
... computational overhead associated with convergence history is illustrated in Figure 5. such methods. Instead, NS solutions, while more computationally expensive and geometrically-complex in Figure 5. Convergence of the differential in the vertical terms of mesh development, lend themselves more directly...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-003
... measurements performed on the Technical University of Berlins research sailing yacht. DYNA. with a finite element analysis of her rig. spinnaker load case port yacht rig apparent wind angle starb loading mainsail spreader dyna computation downwind wind speed sailing downwind upwind load...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-009
.... It is a blend of theory and experiment that focuses on the strength of the battens. When a batten is close to rupture, it is subject to large rotations and must therefore be modeled by non-linear computations of the slender beam type. In addition, we have calculated the stress distribution in a laminated...
Proceedings Papers

Paper presented at the SNAME 16th Chesapeake Sailing Yacht Symposium, March 3, 2003
Paper Number: SNAME-CSYS-2003-010
.... The corresponding numerical algorithm is based on a gradient descent method coupled with a discrete shape grid-point parameterization. The descent direction is obtained by an exact computation of an incomplete discrete gradient associated with a multilevel strategy. The numerical behavior of the present formulation...
Proceedings Papers

Paper presented at the SNAME 14th Chesapeake Sailing Yacht Symposium, January 29–30, 1999
Paper Number: SNAME-CSYS-1999-008
... in the design of the boat that will race in the Cup challenges. Present-day design of IACC racing yachts relies on the use of numerical flow simulations to obtain a competitive edge. The computation of the complex hydrodynamic and aerodynamic flows around sailing yachts provides valuable information...
Proceedings Papers

Paper presented at the SNAME 14th Chesapeake Sailing Yacht Symposium, January 29–30, 1999
Paper Number: SNAME-CSYS-1999-012
... of computations for two-dimensional blocked flow normal to a flat plate are presented. Both quasi-steady and transient computations were performed. The quasi-steady computations provide excellent prediction of the effects of blockage on drag, while the transient simulations do a very good job of predicting...

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