A MATHEMATICAL MODEL FOR THE DECAYING ENERGY DENSITY SPECTRUM IN A CONVECTIVE BOUNDARY LAYER: ISOTROPIC CASE

A. Goulart; Gervasio Annes Degrazia; Domenico Anfossi; Marco T. Vilhena; Claudia Rejane Jacondino de Campos

doi:10.1615/HybMethEng.v4.i1-2.70

Hybrid Methods in Engineering

Editor chefes: Renato M. Cotta (open in a new tab) Mikhail D. Mikhailov (open in a new tab)

Publicou 4 edições por ano

ISSN Imprimir: 1099-2391

ISSN On-line: 2641-7359

A MATHEMATICAL MODEL FOR THE DECAYING ENERGY DENSITY SPECTRUM IN A CONVECTIVE BOUNDARY LAYER: ISOTROPIC CASE

Volume 4, Edição 1&2, 2002, 6 pages

DOI: 10.1615/HybMethEng.v4.i1-2.70

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A. Goulart
Dep. de Ciencias Exatas, Universidade Regional Integrada, Santo Angelo, Brazil

Gervasio Annes Degrazia
Departamento de Fisica, Universidade Federal de Santa Maria, Santa Maria; Consiglio Nazionale delle Ricerche, lstituto di Cosmo-Geofisica, Torino, Italy; and Universidade de Sao Paulo, Institute Astrondmico e Geofisico, Sao Paulo, Brazil

Domenico Anfossi
Istituto di Cosmogeofisica del CNR, Corso Fiume4, 10133, Torino, Italy

Marco T. Vilhena
Departamento de Engenharia Mecânica, Instituto de Matematica Aplicada, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

Claudia Rejane Jacondino de Campos
Departamento de Meteorologia, Universidade Federal de Pelotas, Pelotas, Brazil

RESUMO

Accounting for the current knowledge of the decaying convective boundary layer structure and characteristics, a new theoretical derivation for the convective decaying energy density spectrum has been derived for atmospheric dispersion models. The model is based on the equation for kinetic energy in an isotropic turbulent field and describes the transition between the convective boundary layer and the stable boundary layer.

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