A Multi-Domain Method for Calculating Boundary-Layer and Wake Flows around IACC Sailing Yacht〔含討論〕

概要

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A multi-domain method is set forth for calculating boundary-layer and wake flows around the International America's Cup Class (IACC) sailing yacht. The physical domain is divided into two parts, i.e., the port- and starboard-side domains, where those centerplane (matching) boundaries include keel and rudder surfaces. The Reynolds-averaged Navier-Stokes and continuity equations are solved with the Baldwin-Lomax turbulence model, using a body conforming grid, finite-analytic discretization, and a PISO-type velocity-pressure coupling algorithm. An overview is given of the present approach, and numerical results are presented and discussed for an IACC yacht for zero and nonzero yaw angles, including the comparisons with the canoe body solutions in order to evaluate influences of keel and rudder on boundary-layer flow near the hull surface. The present approach appears to be capable for the detailed study of the flow fields around the entire boat as well as the drag and lifting forces acting on it. Lastly, some concluding remarks are made concerning requirements for future work of the present study.
社団法人日本船舶海洋工学会の論文
1996-09-25