Design Trade-off Analysis for High Performance Ship Hull with Air Plenums

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-03-M-0394
Agency Tracking Number: N031-1601
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
10621-J Iron Bridge Rd., Jessup, MD, 20794
DUNS: 605227875
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jin-Keun Choi
 Senior Research Scientist
 (301) 604-3688
Business Contact
 Georges Chahine
Title: President
Phone: (301) 604-3688
Research Institution
Multi-hull designs with captured air plenums have potential benefits in reduced resistance, better shock mitigation, and improved seakeeping performance. We propose to extend our proprietary CFD software, 3DYNAFSc, to the study of complex ship hulls withair plenums. 3DYNAFSc has been very successful in many unsteady free surface problems such as simulations of ship generated waves, wave-ship interactions on beaches, cavitation on propeller blades and hydrofoils, bubble behaviors in vortex flows, andunderwater explosion bubbles and their interaction with nearby structures. This 3-D non-linear Boundary Element Method code has the advantage that it is coupled with an Unsteady Reynolds-Averaged Navier-Stokes equation solver. The coupled 3DYNAFSc will beused to study the conditions necessary to generate a stable air cavity, while the stand alone 3DYNAFSc will be used in the initial study on hull form parameters. The code will enable us to understand the fundamental hydrodynamics of the hull form,including the ventilated cavity behaviors, the effect of cavity on the ship generated waves, wave-making and total resistance, and the optimum geometry of the air cavity boundary. We will perform a trade-off analysis among combinations of the hull formparameters by comparing hydrodynamic pros and cons of various designs. The developed code will be a useful tool to design complex hull forms including air plenums. These hull forms are expected to have wide applications in the naval and commercialsectors. The technology is potentially applicable to any fast ships such as small boats, cruisers, and possibly containers.

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government