Accession Number : ADA254854


Title :   Compressible Mixing Layers with and without Particles


Descriptive Note : Technical rept.,


Corporate Author : OHIO STATE UNIV COLUMBUS DEPT OF MECHANICAL ENGINEERING


Personal Author(s) : Samimy, M ; Elliott, G S ; Glawe, D D ; Reeder, M F ; Arnefte, S A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a254854.pdf


Report Date : Aug 1992


Pagination or Media Count : 91


Abstract : An extensive experimental research program has been carried out to explore the effects of compressibility in high Reynolds number turbulent free mixing layers. Three mixing layers with convective Mach numbers of 0.51 (Case 1) , 0.64 (Case 3), and 0.86 (Case 2) were investigated. While Case 1 marks the onset of the compressibility effect on the mixing layer growth rate, the vorticity growth rate of Case 3 is approximately 50% less than that of an incompressible mixing layer with the same velocity ratio. Various experimental techniques such as laser Doppler velocimetry, two-point space-time correlations, filtered Rayleigh scattering based flow visualizations, and conventional laser sheet lighting have been utilized.


Descriptors :   *LAYERS , *REYNOLDS NUMBER , *COMPRESSIVE PROPERTIES , RATIOS , RATES , TIME , PARTICLES , SHEETS , FLOW , NUMBERS , MACH NUMBER , MIXING , RAYLEIGH SCATTERING , CORRELATION , LASERS , SCATTERING


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE