NUMERICAL SIMULATION OF OVER WATER HEAVE MOTION OF A TWO-DIMENSIONAL HOVERCRAFT
A simulation of a two-dimensional hovercraft is made using a numerical model based on a Navier-Stokes description of water motion, which allows for nonlinear behavior. In order to obtain cavity pressure measurements, the calculations used an approach that utilized equations which govern the heave motion of hovercraft. Results are compared with previous calculations by the author using the linear Lamb oscillation model, based on the dimensions of a small experimental hovercraft. The onset of instability is correctly predicted as validated by the simulation. The modulation of the lip air flow by means of water motion is shown to have a destabilizing influence at low cavity pressures. While this approach shows promise, it rules out the solution of three-dimensional cases at this time because of the requirement for a large capacity computer.
- Hinchey, M J
- Publication Date: 1989-9
- Features: References;
- Pagination: 13 p.
- TRT Terms: Air cushion vehicles; Mathematical models; Simulation
- Uncontrolled Terms: Heaving; Navier Stokes equations; Numerical models; Two dimensional
- Subject Areas: Marine Transportation; Vehicles and Equipment;
- Accession Number: 00660601
- Record Type: Publication
- Source Agency: Maritime Technical Information Facility
- Files: TRIS
- Created Date: Jul 21 1994 12:00AM