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Related Experiment Videos

Plume rise in a shear layer with neutral stability.

Thomas J Overcamp1

  • 1Department of Environmental Engineering & Science, Clemson University, Anderson, SC 29625-6510, USA. tjvrc@clemson.edu

Journal of the Air & Waste Management Association (1995)
|July 5, 2005
PubMed
Summary

This study presents new, generalized solutions for predicting buoyant plume rise in shear layers, overcoming limitations of previous models. The findings offer a more accurate understanding of plume dispersion under various atmospheric conditions.

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Stable plume rise in a shear layer.

Journal of the Air & Waste Management Association (1995)·2007

Area of Science:

  • Environmental Engineering
  • Atmospheric Science
  • Fluid Dynamics

Background:

  • Existing models for buoyant plume rise in shear layers with power-law velocity profiles are often limited to special cases or rely on oversimplified assumptions.
  • Accurate prediction of plume rise is crucial for environmental impact assessments and industrial safety.

Purpose of the Study:

  • To develop and present generalized solutions for buoyant and nonbuoyant plume rise in shear layers.
  • To address the limitations of existing models by considering plumes with initial vertical momentum and finite source sizes.

Main Methods:

  • Derivation of plume-rise equations for various scenarios, including point sources and sources with finite initial size.
  • Analysis of plume behavior under neutral atmospheric stability conditions.

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  • Simplification of solutions for constant wind speed scenarios.

    • Main Results:

    • The study provides novel, comprehensive solutions for plume rise that are applicable to a wider range of conditions than previously available.
    • The derived solutions encompass both buoyant and nonbuoyant plumes with initial momentum.
    • For constant wind speeds, the new solutions reduce to the conventional plume-rise equations, validating their accuracy.

    Conclusions:

    • The developed solutions offer a more robust and accurate method for predicting plume dispersion in shear layers.
    • These findings enhance the understanding of atmospheric pollutant transport and improve environmental modeling capabilities.
    • The generalized approach provides a valuable tool for engineers and scientists in relevant fields.