THE EFFECT OF LARGE-SCALE INHOMOGENEITIES ON SMALL-SCALE STRUCTURE IN A TURBULENT FLOWetc15 Tracking Number 97 Presentation: Session: Intermittency and scaling 1 Room: Room H Session start: 10:30 Tue 25 Aug 2015 Hamed Sadeghi sadeghi@utias.utoronto.ca Affifliation: Mr. Philippe Lavoie lavoie@utias.utoronto.ca Affifliation: Prof. Andrew Pollard pollard@me.queensu.ca Affifliation: Prof. Topics: - Intermittency and scaling Abstract: Kolmogorov’s equation, which indicates that the mean energy is transported by both turbulent advection and molecular diffusion at any scale of flow, cannot be balanced for flows encountered in the laboratory conditions at moderate range of Reynolds numbers. The main reason for this imbalance is inhomogeneous large-scales. In this work, a new generalized form of Kolmogorov’s equation is suggested for jet flows. The validity of this equation is investigated using hot-wire data obtained across the centreline of a round turbulent jet. In addition, the external intermittency and some other basic characteristics are studied. |