On the scalar turbulent/turbulent interface of axisymmetric jets

The effect of a zero-mean-flow turbulent ambient on the geometry turbulent/turbulent interface (TTI) an axisymmetric jet is investigated and compared with traditional turbulent/non-turbulent (TNTI). turbulence generated using random array. Orthogonal cross-sections subjected to different levels intensities length scales are captured planar laser-induced fluorescence. enhanced radial transport concentration from core towards increased scalar fluctuations within caused by result in steeper mean root-mean-square conditional jumps across TTI layer those TNTI, respectively. When quiescent ambient, background stretch corrugate surface area as evident wider probability density position, lowered occurrence zero-curvature elements, greater misalignment between normal unit vectors interface, tortuosity magnitude fractal exponent.