The conditional (point-averaged) velocity and temperature profiles in a plane jet of air were measured. The conditional point averages of the mean temperature and velocity were found with respect to the moving interface for five intermittences: γ=0.1, 0.2, 0.3, 0.4, and 0.5, at axial stations of x/D=35, 45, and 50. The results suggest coincidence of the interfaces and a flatter temperature profile within the fully turbulent flow.
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Jenkins et al. (1976) studied this question.
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