V.M.Kushnir, S.V.Fedorov Substance diffusion with neutral floatage from underwater pipeline at the action of quasi-stationary and wave currents |
Applied hydromechanics, Vol. 7 (79) ¹ 1, (2005) |
| The diffusion modeling of a substance with neutral buoyancy is considered in the case of its outflow from underwater pipelines in conditions of the influence of the wave and quasi-stationary currents. The numerical decision of the 2-D diffusion equation is carried out with use of a spatial distribution of the vertical diffusion coefficient, which are calculated on the basis of the parameterization of the turbulent fluxes near the pipeline. The horizontal diffusion coefficients are determined on the basis of the "4/3" law and are accepted constant ones in settlement area. The influence of the values of the vertical diffusion coefficients on dynamics and structure of the impurity spot is investigated. |
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| TEXT LANGUAGE: Russian |