High Speed Infrared and High Speed multi-purpose camera
Abstract
This proposal requests acquisition of a high-speed visualization system composed of two imagingtechniques- high-speed infrared (IR) and high-speed imaging camera that can be used in conjunction with UC existing particle imaging velocimeter (PIV), planar laser induced fluorescence (PLIF), Chemiluminescence, and Schlieren systems. It is oriented towards three areas of interest of DoD that are currently being investigated at the University of Cincinnati- high-speed flow-through rotating detonation combustors (RDC), supersonic jet noise emissions and afterburner combustion. The primary usage of the proposed system is towards high-speed flowthrough rotating detonation combustors and is expected to significantly aid the analysis and understanding of rotating detonation wave dynamics, the mechanism of stabilization of high speed core combustion by the detonation wave, and behavior across a range of operating conditions and reactant mixtures. This type of combustor is posited to provide a step-increase in fuel efficiency in both air-breathing and rocket engines. However, they are prone to very high heat production (instantaneous gas temperature routinely exceeds 3000 K), owing to which traditional sensing techniques such as pressure and ionization probes, and thermocouples and resistance temperature detectors (RTDs) are susceptible to mechanical degradation after mere seconds. The proposed system intends to bypass this contact-based analysis approach to this class of detonation phenomenon that move circumferentially about the combustor periphery in the in the kilohert z regime in a flow-through combustor. By using both IR and multi-purpose imaging, it is expected to attain detailed information regarding the structure and dynamics of these waves, since the system would render both the field-of-view averaged heat dynamics (IR), as well as plane-based ascertainment of the flow field (PIV and Schlieren), combustion features (chemiluminescence and PLIF). In addition, simultaneous imaging from different directions will provide ability for 3-D reconstruction of the detonation stabilized combustion. This combination of the muti-parameter imaging techniques comprising the system is also forecast to provide considerable information on the effects and requirements of systems-level integration efforts required for these combustors by accurately capturing the plane-wise variations in combustion, which is required to design components downstream of the device.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 06, 2024
- Source ID
- FA95502310394
Entities
People
- Ephraim Gutmark
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Cincinnati