Laminar-Turbulent Transition in Free Shear Layers

Autor:	Anthony Demetriades, William M. Moeny, Paul J. Ortwerth
Rok vydání:	1981
Předmět:	Physics Turbulence Aerospace Engineering Reynolds number Mechanics Wake Pure shear Physics::Fluid Dynamics Shear modulus symbols.namesake Mach number Laminar-turbulent transition symbols Wind tunnel
Zdroj:	AIAA Journal. 19:1091-1092
ISSN:	1533-385X 0001-1452
DOI:	10.2514/3.60047
Popis:	A STUDY has been performed to derive a threshold criterion for the existence of turbulence in a shear layer, and to see if such a threshold is useful in predicting transition onset in such a flow. This approach has already given satisfactory results in wake flows. As in the latter case, the present work is based on the existence of a minimum turbulence Reynolds number, and derives numerical results by utilizing established magnitudes of turbulence properties in the turbulent shear layer. Transition Reynolds numbers are predicted as a function of speed ratio, total temperature ratio, and Mach number jumps across the layer. New experiments are described in which free shear-layer transition was measured and, within an observed unit Reynolds-number effect, was found to parallel the predictions quite well.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3a838da6a6f5fbad08da1312b87a849d https://doi.org/10.2514/3.60047 Zobrazit plný text záznamu