IR Absorption Tomography for Active Combustion Control PDF Download

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Languages : en
Pages : 17

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Book Description
The goals of our research were to further the development of IR absorption tomography as a sensor for closed-loop control of combustion and propulsion systems of interest to the Navy, to apply IR absorption tomography to study mixing in forced-jet actuators, and to use POD analysis to investigate large scale structures in reacting jet flows and the potential for reduced order models of jet actuators. In the last year of the grant we expanded its scope to include the development of a camera system for measuring chemiluminescence from combustors to obtain a semi-quantitative measure of combustion heat release dynamics. Our research has been in collaboration with Drs. Orinstein and Kailasanth of the NRL and recently with Dr. Robert Schefer of Sandia National Laboratories. Major accomplishments during the grant were completion of an IR absorption facility and measurements on forced, square jets, refinement of our tomographic reconstruction algorithm - Adaptive Finite Domain Direct Inversion (AFDDI) - analysis of large eddy simulations of forced, reacting rectangular jets using proper orthogonal decomposition (POD), and in the past year work on the development of a new camera system for chemiluminescence emission tomography to obtain spatially resolved data on heat release dynamics. This work was a significant portion of two PhD theses, was reported in four AIAA preprints and is the subject of two papers in preparation for publication and an article appearing in a book based on papers presented at the 15th ONR Propulsion Meeting.