Derivation of third-order vertical velocity turbulence moment in the convective boundary layer from large eddy simulation data: an application to the dispersion modeling

作者：Maldaner Silvana; Degrazia Gervasio Annes^*; Rizza Umberto; Moreira Virnei Silva; Puhales Franciano Scremin; Acevedo Otavio Costa; Alves Ivan; Carvalho Jonas da Costa

来源：Atmospheric Pollution Research, 2013, 4(2): 191-198.

DOI：10.5094/APR.2013.019

• Third moment of the vertical velocity
• large eddy simulation
• Lagrangian stochastic particle dispersion model

A new formulation for the vertical turbulent velocity third statistical moment in a convective boundary layer is proposed. The parameterization is based directly on the definition of this higher order moment, with velocity skewness and variance being calculated from large eddy simulation data. The formulation, included in a Lagrangian stochastic dispersion model, has been tested and compared with expressions for the third moment obtained from experimental data and reported in the literature, using concentration data from field experiments. The application of a statistical evaluation shows that the proposed parameterization has one of the best overall adjustments to the data.

• 出版日期2013-4