Experimental Investigation of Reynolds and Favre Averaging in High-Speed Jets

Autor:	Jayanta Panda, Richard G. Seasholtz
Rok vydání:	2006
Předmět:	Physics Turbulence Aerospace Engineering Mechanics Kinetic energy Compressible flow Physics::Fluid Dynamics symbols.namesake Classical mechanics Mach number Turbulence kinetic energy symbols Supersonic speed Rayleigh scattering Choked flow
Zdroj:	AIAA Journal. 44:1952-1959
ISSN:	1533-385X 0001-1452
DOI:	10.2514/1.15638
Popis:	Recent advancements in a molecular Rayleigh scattering based diagnostic technique allowed for simultaneous measurement of velocity and density fluctuations with high sampling rates. The technique was used to investigate unheated high subsonic and supersonic fully expanded free jets in the Mach number range from 0.8 to 1.8. The difference between the Favre-averaged and the Reynolds-averaged axial velocity and axial component of the turbulent kinetic energy is found to be small. On average, estimates based on Morkovin’s strong Reynolds analogy are found to underpredict turbulent density fluctuations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a4cdf5ed430354c7fc57872a143670a1 https://doi.org/10.2514/1.15638 Zobrazit plný text záznamu