Hydrodynamics Related to Ships/Submarines
Work in these areas supports the Navy’s interest in advanced sea platform performance science and technology, submarine science and technology, and naval engineering:
- Subsurface Hydrodynamics Program: Current emphasis on turbulent flow understanding/prediction with an emphasis on wall roughness effects and stratified wakes
- Basic research on non-equilibrium turbulence: Turbulence modeling/understanding related to flows with adverse pressure gradients and separation in order to build a consistent description of the structure of wall-bounded turbulence across a wide range of realistic and dynamically complicated flow fields — specifically related to the change in the structure of boundary layer turbulence when the flow departs from equilibrium
Research Concentration Areas
- Complete understanding, prediction and control of the complex, unsteady hydrodynamic phenomena associated with the interactions of naval platforms and the ocean for design and control
- Understanding, predicting and controlling turbulent wakes including: free-surface, stratification and other environmental effects
- Tools to accurately predict platform maneuvering performance supports future designs and current platform operational tactics
Research Challenges and Opportunities
- Provide a knowledge base of understanding on turbulent flow over platforms which have surface roughness, geometric complexities, flow-induced noise sources, turbulence transition, regions of separated flow, unsteady forces, etc. for improved design, performance and maneuvering of naval platforms:
- Develop computational tools that have sufficient physics to accurately predict performance and reduce “surprises”
- Develop high resolution experiments to determine flow physics and inform modeling
- Generate reliable scale-up rules from laboratory experiments to full scale
- Provide a knowledge base of wake flow physics in a stratified layer (laboratory scale):
- Develop computational tools that have sufficient physics to accurately predict wake evolution
- Generate scaling laws for wake evolution
Program Contact Information
How to Submit
For detailed application and submission information for this research topic, please see our Funding Opportunities page and refer to broad agency announcement (BAA) No. N00014-21-S-B001.
- Contracts: All white papers and full proposals for contracts must be submitted through FedConnect; instructions are included in the BAA.
- Grants: All white papers for grants must be submitted through FedConnect, and full proposals for grants must be submitted through grants.gov; instructions are included in the BAA.