The application of a Reynolds Averaged Navier-Stokes (RANS) code in the design of an 'Advanced Sail' for a submarine is discussed. To validate the code on similar sail shapes calculations are compared with experimentally obtained data at 1/35 scale from a wind tunnel and 1/17 scale from a water channel. This data comparison includes flow visualization, axial velocity and surface pressures. The agreement demonstrates that RANS codes can be used to provide the significant hydrodynamics associated with these sail shapes. To improve the design several modifications to a sail are evaluated using the RANS code. Based on the predicted secondary flow downstream of the sail as well as the drag a new design is chosen, without having to build and test the inferior shapes, reducing time and cost for the program. This improved sail was then built at 1/4 scale and demonstrated on the U.S. Navy's Large Scale Vehicle.
Use of RANS Calculations in the Design of a Submarine Sail
2003
13 pages
Report
Keine Angabe
Englisch
Marine Engineering , Fluid Mechanics , Meetings , Validation , Hydrodynamic codes , Submarine sails , Nato , Symposia , Computational fluid dynamics , Flow fields , Navier stokes equations , Naval architecture , Hydrodynamics , Reynolds number , Streamline shape , Component report , Proceedings , Rans(Reynolds averaged navier stokes)
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