Air Dispersion Modeling : A Study On Estimation Of Dispersion Coefficients Of PUFF


Air Dispersion Modeling : A Study On Estimation Of Dispersion Coefficients Of PUFF 

Tanuku Srinivas and A. Kameswara Rao

Abstract :

Pollutants emitted into the atmosphere get mixed with the surrounding air and diluted by atmospheric dispersion. To estimate the source strength and its concentrations at different places down-stream, different modeling techniques are available. Air quality modeling plays an important role in the design of an environmental program. Modeling is needed to predict the pollution levels and to plan to protect the environment from their harmful effects. Air pollution modeling mainly depends on Gaussian Plume Model, which has several limitations.

Most diffusion models use the Gaussian plume model, which is a material balance model. Gaussian plume model determines the concentrations of the pollutant released into the atmosphere from a plume (continuous release).

The main objective of the present work is to develop a dispersion coefficients for a puff (instantaneous release) which differs from plume by being intermittent and instantaneous where as a plume is a continuous release and to establish dispersion coefficients for different stability conditions i.e from A to F for a puff.

Air Dispersion Modeling ____________________________________________________________________

  1. Dr Tanuku Srinivas, Director, CDL & Professor, Department of Civil Engineering, Gandhi Institute of Technology & Management (GITAM) (Deemed to be University), Rushikonda, Visakhapatnam – 530 016, Andhra Pradesh, India.

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Mobile : +91-9848477699

  1. Associate Professor, GVP Engineering College, Visakhapatnam, AP, India.


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