Nonintrusive spectroscopic techniques for supersonic/hypersonic aerodynamics and combustion diagnosticsThis paper presents an overview of the primary nonintrusive diagnostic techniques being developed by the NASA Langley Research Center to address the validation needs of Computational Fluid Dynamic (CFD) codes. The techniques include absorption in the UV and IR, Laser Induced Fluorescence, electron beam fluorescence, and a number of scattering techniques including Rayleigh, spontaneous Raman, and several coherent Raman spectroscopies. Most of the techniques are highly specialized, require complex data interpretation, and can satisfy only a few of the CFD needs. For these reasons, the evolving trend in flowfield diagnostics appears to favor a mode in which the diagnostic researcher, the experimental aerodynamicist, and the CFD community jointly define experiments based on the aeronautical requirements and on available diagnostic techniques.
Document ID
19930030248
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Exton, R. J. (NASA Langley Research Center Hampton, VA, United States)