KOSEN 한인과학기술자네트워크

Advanced Fluid Modeling Capability for Underwater Shock Analysis of Naval Platforms Primary Sponsor: Department of Defense Deadline: 4/11/2001 KEYWORDS TECHNOLOGY AREAS: Materials/Processes DOD ACQUISITION PROGRAM SUPPORTING THIS TOPIC: FNC: Platform Protection; MCM OBJECTIVE: Develop and implement advanced fluid modeling capability for use in underwater shock analyses to support design optimization of ship and submarine hull structures. DESCRIPTION: Ship and submarine platforms must be designed to withstand nearby detonations of underwater weapons such as mines and torpedoes. The detonation of an underwater weapon produces a complex loading from the shock wave and gas bubble from the detonation products, which interacts with the surrounding water, the sea bottom, the water surface, and any other nearby surfaces. Accurate prediction of the development and propagation of the loading to the platform is essential for assessing the response of the platform. More accurate load prediction for complex, real world environments will facilitate the optimization of structural hull designs and hull protection systems, resulting in lighter and more survivable hull configurations. PHASE I: Demonstrate the applicability of advanced fluid modeling techniques such as level set methods to solve underwater shock benchmark problems. PHASE II: Implement the advanced fluids solver into software packages currently in use for ship and submarine shock analysis. Validate against relevant test data. Apply new capability to optimize passive ship hull protection systems. PHASE III: Transition new capability to Navy simulation development programs and ship/submarine hull design programs. Apply the new capability to support the design of passive hull protection systems, resulting in more affordable, lighter, and more survivable hull designs. DUAL-USE POTENTIAL: Advanced fluid solvers will be implemented in design tools for a variety of commercial applications. These include (i) oil rig demolition, (ii) mitigation of explosion effects on structures and marine life during harbor construction and demolition, (iii) understanding fluid flow issues in hydraulic machinery and reactor systems, (iv) addressing seakeeping and maneuverability issues (waveloading effects) for large commercial vessels, and (v) design of commercial double hulled tankers. REFERENCES: (1) Hansen, Ib, They Must Be Sturdy, Proceedings of the U.S. Naval Institute, pp. 50-54, October 2000. KEYWORDS: Underwater Explosions; UNDEX; Euler Modeling; Free Surfaces; Fluid Modeling; Shock Analysis DoD Notice: Between January 2 and February 28, 2001, you may talk directly with the DoD scientists and engineers who authored the solicitation topics, to ask technical questions about the topics. The Topic Author is listed in the box below. For reasons of competitive fairness, direct communication between proposers and topic authors is not allowed after February 28, 2001, when DoD begins accepting proposals under this solicitation. TPOC: Dr. Judah Goldwasser Phone: 703-696-2164 Fax: 703-696-2558 Email: goldwaj@onr.navy.mil. 2nd TPOC: Mr. Gregory Harris Phone: 301-744-4626 Fax: 301-744-6698 Email: harrisgs@ih.navy.mil. After February 28, 2001 proposers may still submit written questions about solicitation topics through the SBIR/STTR Interactive Topic Information System (SITIS). If you have general questions about DoD SBIR program, please contact the DoD SBIR Help Desk at (800) 382-4634 or email to SBIRHELP@teltech.com. NOTE: The Solicitations listed on this site are copies from the various SBIR agency solicitations and are not necessarily the latest and most up-to-date. For this reason, you should use the agency link listed below which will take you directly to the appropriate agency server where you can read the official version of this solicitation and download the appropriate forms and rules. The official link for this solicitation is: http://www.acq.osd.mil/sadbu/sbir/sttr01/dod_sttr01.htm. DoD will begin accepting proposals on March 1, 2001. The solicitation closing date is April 11, 2001.