High Framing Rate Imaging of Velocity and Minor Species Concentrations

Innovative Scientific Solutions, Inc. (ISSI) proposes the development of a high-framing rate quantitative flow imaging system, with potential application to a wide variety of optical diagnostic techniques for reacting and nonreacting flows. The system is based around a novel burst-mode laser, which has been recently developed by our Ohio State University (OSU) collaborators, a version of which is currently in place at NASA Glenn Research Center. The particular emphasis of the proposed Phase I program is to 1) demonstrate high-framing-rate velocity-field imaging using a 2D laser diagnostic technique known as Planar Doppler Velocimetry (PDV) in a reacting flow and to 2) extend the flexibility of the burst mode laser by building a prototype optical parametric oscillator (OPO) to be pumped by the burst-mode laser, enabling Planar Laser-Induced Fluorescence (PLIF) measurements of combustion intermediate species. The Phase II program would build upon this demonstration and design novel ways of attaining high-framing rate measurements of the 2D velocity field and minor species concentration (e.g., OH).