The future Navy will certainly include a broad range of ship types, including multihulls, surface-effect ships, hydrofoil-assisted vessels, together with more traditional aircraft carriers and other monohulls. The design of the next generation vessels will require the need to accurately assess the performance in normal as well as extreme conditions. Furthermore, the relative performance between the broad range of ship types must be determined at the earliest stages of analysis of alternatives. Many of the vessel types may be limited by the sea conditions, as this is already the case for several existing class of ship. While it is preferred to have a ship that can operate without sea condition limitation, it is recognized that the design of a ship that can perform in all conditions must compromise its performance relative to a ship that can perform well for a subset of conditions but perform more poorly for others. Furthermore, the vessels of the future must be balanced to have high fuel efficiency so that the fuel weight is minimum for a given operating range. The topic of fuel efficiency also has important implications for the transit speed and operating costs. It will be necessary to design ships that can perform their mission while consuming a minimum quantity of fuel. This work is focused on combining the potential-flow based methods together with field methods to achieve the best of both worlds. Previous work has been done using the framework of velocity decomposition to achieve domain reduction that is necessary for the field method, while computing a viscous potential solution that is valid outside of the rotational region. The theoretical work in this proposal will be useful for the analysis and discovery of the hydrodynamic processes that govern the performance of the broadest range of ship type.
Unsteady Velocity Decomposition for Hydrodynamic Assessment of Advanced Naval Vessels
2022
8 pages
Report
No indication
English
Naval Vessels Equipped With Advanced Control System
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