Increased Capability and Interface for Computational Code for Implosion Navy SBIR FY2012.1 Sol No.: Navy SBIR FY2012.1 Topic No.: N121-091 Topic Title: Increased Capability and Interface for Computational Code for Implosion Proposal No.: N121-091-0278 Firm: CMSoft, Inc. 566 Glenbrook Drive Palo Alto, California 94306-4344 Contact: Goeric Daeninck Phone: (650) 855-9310 Abstract: This SBIR Phase I project aims at enabling the transformation of the computational capability for implosion developed under the ONR MURI and FNC programs on implosion from a research code to a reliable, high-performance, and user-friendly software for the prediction of implosion and its effects on near-by systems. To this effect, it focuses on developing a compact modeling procedure for underwater implosion that captures the critical parameters of this problem, is amenable to manual, semi-automatic, and automatic one- and three-dimensional analyses as needed, and offers robust and computationally efficient hydrostatic initiation procedures. It also focuses on designing, implementing within the software AERO-I, and demonstrating for sample relevant problems a prototype GUI for the above modeling procedure that ensures both its user-friendliness and reliability. The project also analyzes the technical feasibility of implementing the Tillotson EOS for water in the computational algorithms of the flow solver AERO-F. It also develops a blueprint for upgrading this solver to enable its operation on hexahedral meshes, as these reduce the computational complexity of the implosion simulation of submerged cylindrical geometries. To achieve the stated objective, this SBIR Phase I project also focuses on optimizing the CPU performance of AERO-F's implosion capabilities. Benefits: Today, a pressing need for high-fidelity multi-phase fluid-structure simulations arises for the failure analysis of many important engineering systems. These include not only military underwater vessels, but also civilian offshore constructions and commercial underwater engineering products. This need also arises in the gas pipe industry, and in biomedical applications such as the shock wave lithotripsy procedure. The issues addressed by this proposal, which complement those addressed by the ONR MURI and FNC programs on implosion, have been for a long time the show stopper for the aforementioned simulations. This is because most real-world complex implosion and explosion problems involve fluid-structure interaction with large deformations and possibly crack propagation, and simulating such an interaction is a major computational challenge. Addressing in this SBIR project the outstanding issues pertaining to implosion offers the opportunity not only to address the technical needs of the Navy, but also incorporating the resulting computational technology for implosion in the AERO Suite of Codes commercialized by CMSoft, thereby increasing its market size. Return