WaveDyn provides users with a multi-body wave energy converter construction environment. Individual bodies are connected using sliding, rotational or free joints and links, so that a complete structural model may be built up to represent a wave energy converter machine. Hydrodynamics components may be added to account for wave loading and body interactions within the wave field, whilst power take-off (PTO) definitions can be assigned to the joints in the system and controlled by external, user defined algorithms. Floating systems can be moored through the specification of mooring line elements which may be attached to any point on the structure.
WaveDyn core features include:
- A time-domain simulation engine that solves for the structural, hydrodynamic, moorings, power take off and control system interactions using a variable timestep, adaptive order integrator for optimised run-times.
- The ability to input a wide range of wave conditions, from measured sea states to parameterised spectral shapes (including directional spectra).
- A multi-body structural dynamics solver, which allows the user to build multi-body structures of different types and forms, matching the physical layout of the real machine.
- Hydrodynamics formulation incorporating linear excitation and radiation force terms as well as non-linear hydrostatics forces for any number of interacting bodies.
- Option to apply non-linear excitation forces based on instantaneous body position.
- A range of power take-off system models, including basic linear damping and stiffness terms, non-linear explicit formulations and full dynamic system templates incorporating hydraulic components and force and moment constraints.
- A Windows based graphical user interface, including a model construction and simulation results analysis environment.
- Ability to build system models incorporating multiple interacting WEC devices so that interference effects between machines in close proximity can be assessed.
- Continuous development of new engineering models and user interface productivity improvements as the wave industry expands.