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    Effects of Flow Pulsing on Passive Scalar Mixing in a Turbulent Round Jet

    A. Benaissa1, I. Yimer2

    FDMP-Fluid Dynamics & Materials Processing, Vol.6, No.2, pp. 203-218, 2010, DOI:10.3970/fdmp.2010.006.203

    Abstract This work presents a study on the effect of pulsing on a jet flow. Pulsing is used to modify jet inlet conditions with the objective of improving mixing. In this experimental work, a jet was slightly heated so that temperature could be considered as a passive scalar. The spectral behaviour of velocity and the passive scalar temperature was analyzed along the jet axis with and without pulsing. Low frequency pulsing (f/fS< 0.05 fSthe Strouhal frequency) modifies the spectral composition of the velocity at the jet exit, but it does not affect the asymptotic profile reached… More >

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