Author(s): Jiang ChuN. Bo; Du Li Hui; Liang Dong Fang

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Abstract: The turbulent concentration fields in the wake of a circular cylinder were investigated by both numerical and experimental methods. Planar Laser- Induced Fluorescence (PL1F) technique was used to non-intrusively measure the simultaneous two-dimensional concentration fields, which is necessary for research on unsteady flows. The fractional step finite element formulation was extended to simulate the turbulent transportation processes in the wake region. This numerical formulation has third order accuracy and an enlarged stability domain which is suitable for convection dominated flows. The characteristics of the mean and instantaneous concentration distributions were analyzed in detail. The properties of the vortex movement and the concentration distributions were also analyzed. The numerical results were verified by the PLIF experiment.

DOI: https://doi.org/10.1080/00221680309499975

Year: 2003