A new model for the CBL growth based on the turbulent kinetic energy equation

被引：0
作者：
Antonio G. Goulart
Davidson M. Moreira
Marco T. Vilhena
Gervásio A. Degrazia
Sergej S. Zilitinkevich
机构：
[1] UNIPAMPA/UFSM,Centro de Tecnologia de Alegrete
[2] UNIPAMPA/UFPEL,Centro de Ciências Exatas e Tecnológicas
[3] Universidade Federal do Rio Grande do Sul,Instituto de Matemática
[4] Universidade Federal de Santa Maria,Departamento de Física
[5] University of Helsinki and Finnish Meteorological Institute,Division of Atomospheric Sciences, Department of Physical Sciences
来源：
Environmental Fluid Mechanics | 2007年 / 7卷
关键词：
Convective boundary layer; Turbulent kinetic energy; Turbulence parameterization; Eddy diffusivity; Dispersion model;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Starting from the evolution equation for the turbulent energy density spectrum (EDS), we develop a new model for the growth of the Convective boundary layer (CBL). We apply dimensional analysis to parameterize the unknown inertial transport and convective source term in the dynamic equation for the three-dimensional (3-D) spectrum and solve the 3-D EDS equation. The one-dimensional vertical spectrum is derived from the 3-D spectrum, employing a weight function. This allows us to select the magnitude of the vertical spectral component for the construction of the growing 3-D EDS. Furthermore, we employ the vertical component of the energy spectrum to calculate the eddy diffusivity (required in dispersion models). Currently there are no available experimental data to directly verify our EDS model.
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页码：409 / 419
页数：10
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