An assumed joint-Beta PDF approach for supersonic turbulent combustionIn a recent experiment, Cheng et al. (1991) used ultraviolet spontaneous vibrational Raman scattering and laser-induced predissociative fluorescence techniques for simultaneous measurements of temperature and concentrations of O2, H2, H2O, OH, and N2 (and their rms) in supersonic turbulent reacting shear layers. Because present computational techniques are not suited for prediction of all of the above measurements, a new approach has been developed and is being used to predict all relevant flow properties and their rms (where appropriate). The approach explores the use of a joint-Beta PDF for concentrations. It was found that the general expression of this PDF was impractical because of decoding problems resulting from determining the various parameters of the PDF. Thus, a special case of this general expression was considered. Calculations using this simplified version of the joint-Beta PDF were not consistent with the available data from the experiment.
Document ID
19920071575
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Baurle, R. A. (NASA Langley Research Center Hampton, VA, United States)
Alexopoulos, G. A. (NASA Langley Research Center Hampton, VA, United States)
Hassan, H. A. (North Carolina State University Raleigh, United States)
Drummond, J. P. (NASA Langley Research Center Hampton, VA, United States)