CARS system for turbulent flame measurementsSimultaneous nitrogen number density and rotational-vibrational temperatures were measured in a turbulent diffusion flame with a Coherent Anti-Stokes Raman Scattering (CARS) instrument. The fuel jet was diluted with nitrogen (20 percent by volume) to allow temperature measurements across the entire jet mixing region. These measurements were compared with fluid dynamics computations. The CARS system incorporated a neodymium YAG laser, an intensified silicon photodiode array detector, and unique dynamic range enhancement methods. Theoretical calculations were based on a parabolic Navier-Stokes computer code. The comparison of these techniques will aid their development in the study of complex flowfields.
Document ID
19840055172
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Antcliff, R. R. (Systems Research Laboratories, Inc. Dayton, OH, United States)
Jarrett, O., Jr. (Systems Research Labs., Inc. Dayton, OH, United States)
Rogers, R. C. (NASA Langley Research Center Hypersonic Propulsion Branch, Hampton, VA, United States)