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

Name: Dr. Peter Chang

Title: Program Officer

Department: Code 331

Email for Questions: peter.chang@navy.mil

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.

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