Lagrangian Stochastic Modeling of Dispersion in the Planetary Boundary Layer.

Abstract

An existing Lagrangian stochastic model for dispersion in the convective boundary layer (CBL) was extended in two main ways. First, a model for the mean field dispersion in a rapidly-evolving CBL was developed and calculations of the crosswind-integrated concentration (CWIC) were carried out for a range of conditions. Second, a Lagrangian model for the CWIC and the mean and root-mean-square concentrations was developed that uses the velocity fields from large-eddy simulations as input. Calculations of the CWIC fields were made for three source heights and showed good agreement with the convection tank measurements of Willis and Deardorff. (AN)

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Document Details

Document Type
Technical Report
Publication Date
Apr 04, 1995
Accession Number
ADA295701

Entities

People

  • Jeffrey C. Weil

Organizations

  • University of Colorado Boulder

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Air Pollution
  • Aircrafts
  • Boundaries
  • Boundary Layer
  • Convection
  • Crosswinds
  • Diffusion
  • Dispersions
  • Ecology
  • Large Eddy Simulation
  • Layers
  • Measurement
  • Probability
  • Simulations
  • Stratified Fluids
  • Turbulence

Fields of Study

  • Environmental science

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Atmospheric Science/Meteorology
  • Computational Fluid Dynamics (CFD)