Liu Yu-lu, Cai Shu-tang. Contaminant Contraction in Two-dimensional Oscillatory Flows[J]. Applied Mathematics and Mechanics, 1993, 14(11): 949-959.
Citation: Liu Yu-lu, Cai Shu-tang. Contaminant Contraction in Two-dimensional Oscillatory Flows[J]. Applied Mathematics and Mechanics, 1993, 14(11): 949-959.

Contaminant Contraction in Two-dimensional Oscillatory Flows

  • Received Date: 1992-07-31
  • Publish Date: 1993-11-15
  • If the vertically-mixing time is comparable with that of period oscillatory current, the contaminant contraction may occur. The coefficient of shear dispersion is negative (singularity). According to the two-dimensional delay-diffusion equation derived by the author[7]: where u(t),v(t) are vertically-averaged velocities, the equations for X(t,τ), Y(t,τ), central displacement, dispersion tensor, had been derived. Dij is positive when τ is small. If the is large, the memory functions may be negative. Also the expressions for and X, Y had been obtained.
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