Experimental and computational studies of turbulent mass transfer in a mixing channel
Journal article, Peer reviewed
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http://hdl.handle.net/11250/182355Utgivelsesdato
2008Metadata
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Originalversjon
Hjertager Osenbroch, Lene K.; Hjertager, Bjorn H.; and Solberg, Tron (2008) "Experimental and Computational Studies of Turbulent Mass Transfer in a Mixing Channel," International Journal of Chemical Reactor Engineering: Vol. 6: A105. Available at: http://www.bepress.com/ijcre/vol6/A105Sammendrag
Experiments are carried out for passive mixing in order to obtain local mean
and turbulent velocities and concentrations. The mixing takes place in a square
channel with two inlets separated by a block. A combined PIV/PLIF technique
is used to obtain instantaneous velocity and concentration fields. Three different
flow cases are studied. The 2D numerical predictions of the mixing channel show
that none of the k - ε turbulence models tested is suitable for the flow cases studied
here. The turbulent Schmidt number is reduced to obtain a better agreement
between the measured and predicted mean and fluctuating concentrations. The
multi-peak presumed PDF mixing model is tested and comparisons with experiments
are encouraging.