The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, end completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information. including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Executive SummaryThis program succeeded in achieving the goal set in the original proposal solicitation, which is the development of a software toolbox to enable feedback flow controller development. Our toolbox is comprehensive in that it covers all aspects of controller development. Starting with data collection of the unforced and open loop forced flow response, through low dimensional model development, controller design and testing all the way to controller verification against a truth model, all important aspects of controller development are covered. Since all feedback control related software is implemented in Matlab, the controller developer can easily implement any control algorithm conceivable, using one of the most popular state of the art 4 th generation programming languages. At the same time, computationally intensive algorithms were parallelized in order to improve execution speed and allow for processing of even the largest data sets. This was done using the highly efficient open source file format hdf5, in order to allow low level access to the data by the user if needed. Based on feedback from industry representatives at the AFOSR contractors meeting in Long Beach earlier this month, we expect the toolbox to become an indispensable tool for controller development not just for academia, but also for applied problems encountered by the industry. The toolbox developed around the Cobalt flow solver allows for physically correct modeling of any flow control mechanism available today, by using rigid body motion, blowing and suction boundary conditions and body forces. This can be done both open loop, dosed loop and even combinations of multiple controllers and different actuation mechanisms acting on a flow field at once can be investigated. These capabilities set the toolbox apart from any other commercially available toolbox, and also surpass the capabilities of existing research codes. Personnel Supported U.S. Air Force Academy
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