ThreeDimensional SpaceTime Structure of Turbulent Jets
Abstract
Threedimensional spatiotemporal concentration fields are measured in the far field of a liquidphase axisymmetric turbulent jet. The LIF imaging experiments, which capture the entire local extent of the jet in a plane coincident with the jet axis, are spatially resolved to the diffusion length scale and temporally resolved with respect to the outofplane transport time τ_{z} = λ_\cal D / w'. The threedimensional spacetime structure of the turbulent mixing flow is visualized by computing isoconcentration surfaces. Image correlation velocimetry (ICV), which can infer velocity fields from a sequence of images of advected scalars, is applied to the LIF data to compute the estimated threedimensional isosurface.
 Publication:

APS Division of Fluid Dynamics Meeting Abstracts
 Pub Date:
 November 1997
 Bibcode:
 1997APS..DFD..Da02S