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Solution of the advection-diffusion equation by the moments method
Abstract A general technique for solving the K-equation is developed on the basis of the truncated Gram-Charlier expansion of the concentration field, and of the finite set of equations for the corresponding moments. Such a “moments method” can be applied to diffusion problems involving point sources and horzontally homogeneous boundary layer structures. It is suggested that this method may be more practical to use than the conventional grid model, particularly for routine applications. The fourth-order moments method is applied to a case of continuous plumes in a sheared atmosphere and the predicted concentration patterns are compared with the solutions obtained by a conventional grid model.
Solution of the advection-diffusion equation by the moments method
Abstract A general technique for solving the K-equation is developed on the basis of the truncated Gram-Charlier expansion of the concentration field, and of the finite set of equations for the corresponding moments. Such a “moments method” can be applied to diffusion problems involving point sources and horzontally homogeneous boundary layer structures. It is suggested that this method may be more practical to use than the conventional grid model, particularly for routine applications. The fourth-order moments method is applied to a case of continuous plumes in a sheared atmosphere and the predicted concentration patterns are compared with the solutions obtained by a conventional grid model.
Solution of the advection-diffusion equation by the moments method
Lupini, R. (Autor:in) / Tirabassi, T. (Autor:in)
Atmospheric Environment ; 17 ; 965-971
27.10.1982
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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