High Resolution Measurement of the Coupled Velocity and Acceleration Fields of both the Fluid and Structure in Hydrodynamic Fluid Structure Interactions associated with Marine Vehicles Navy STTR FY2012.A Sol No.: Navy STTR FY2012.A Topic No.: N12A-T011 Topic Title: High Resolution Measurement of the Coupled Velocity and Acceleration Fields of both the Fluid and Structure in Hydrodynamic Fluid Structure Interactions associated with Marine Vehicles Proposal No.: N12A-011-0145 Firm: Physics, Materials & Applied Math Research, L.L.C. 1665 E. 18th Street, Suite 112 Tucson, Arizona 85719 Contact: Nathan Tichenor Phone: (979) 862-1795 Web Site: www.physics-math.com Abstract: PM&AM Research and Texas A&M University will develop an innovative non-invasive technique to meet the current DoD need for simultaneous acquisition of the velocity and acceleration fields of both a fluid and solid undergoing a fully-coupled fluid-structure interaction. Modern composite structures are being designed to flex or deform under fluid loading to attain desired performance gains. The resulting fluid/structure interactions, not easily modeled by classical analytical approaches, have recently motivated development of advanced methods to simulate coupled flow and structural motion. The success of these advanced computational methods depends critically on high-quality, high-fidelity, validation measurements. By utilizing a novel imaging and processing concept, our team will determine spatial and temporal resolution limits and identify approaches to improve resolution. Additionally, through demonstrations, we will evaluate the velocity and acceleration measurement accuracy. By utilizing the unique characteristics of the proposed approach, this high-resolution optical technique will allow for the potential development of low-cost version of the method in order to measure the fluid/structure interactions of interest. Benefits: The proposed innovate optical diagnostic technique will be capable of characterizing both the fluid and solid components of a fully-coupled fluid-structure interaction. If successful, it is expected that this technology will provide excellent benefits for marine vehicle designers in both the commercial and military sectors and will be generally useful as a research and engineering tool. Significant interest will be generated by low-cost possibilities, enabled by the novel approach. This will encourage adoption by academic institutions as a teaching tool across multiple disciplines. Return