Stepped, Cambered, Planing Hulls with Hydrofoils, SCPH2 - optimizing their Reduced Powering Demand and Seakeeping Performance
Abstract
Stepped, Cambered, Planing Hulls with Hydrofoils, SCPH2 - optimizing their Reduced Powering Demand and Seakeeping PerformanceThe new Stepped Cambered Planing Hull with Hydrofoils concept demonstrated superior performance in an earlier ONR funded project. IN this new proposal, we propose to study its main components in orderto devise physics based design theories to optimize hydrodynamic performance. Main elements of SPCH2are the high aspect ratio, swept back cambered planing surface and the Super-Cavitating, Surface-Piercinghydrofoils. We will develop experimental/numerical techniques in order to characterize their complexhydrodynamics that involves cavitation, ventilation and dynamic instabilities at different speeds and running attitudes.We propose to continue the sign/numerical/experimental studies of the promising SCPH2 concept, focusing on the following topics:1) Design and EFD/CFD validation of different stern hydrofoil designs2) Systematic study of Ventilation inception and hysteresis of SP-SC hydrofoils3) Characterize the effect of different cambered geometries (in front of the step) on the shape of thefree surface wake at the position of the stern hydrofoils4) Systematic investigation of dynamic characteristics and dynamic equilibrium of cambered V-shapedplaning surfaces
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 03, 2017
- Source ID
- N000141712344
Entities
People
- Stefano Brizzolara
Organizations
- Office of Naval Research
- United States Navy
- Virginia Tech