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Ship Seakeeping
Nonlinear Fluid-Structure Interaction
Experimental Hydrodynamics
Ship Seakeeping
Applied Physical Sciences works in the application and continuing development of the AEGIR seakeeping code for prediction of hydrodynamic performance and stability of single and multibody surface craft. With a time-domain unsteady boundary element approach, AEGIR is notable for its robustness to arbitrary vessel geometries and simulated conditions. With an integrated non-uniform rational B-spline (NURBS) engine, hull geometries can be imported directly from CAD designs. Single hull, multihull or multi-body problems can be simulated for six degree-of-freedom forced or free motion with incident monochromatic waves or sea spectra.

Recent APS projects associated with the AEGIR seakeeping code include hull optimization tasks, where the NURBS geometry engine is used to manipulate catamaran and SWATH hull geometries for hydrodynamic evaluation in an automated optimization procedure. APS also used AEGIR in support of the DDX program, evaluating the hydrodynamics and seakeeping of the DDX hullform in comparison to the DDG.

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