plume modeling Articles

203 Results found
  • Keyword: plume modeling ×

Simulation of plume dispersion using different stack configurations and meteorological inputs

by Inderscience Publishers  (Dec. 1, 2014)

The application of CALMET/CALPUFF modelling system is well known, and several validation tests were performed until now; however, most of them were based on experiments with a large compilation of surface and aloft meteorological measurements, not always available. Also, the use of an operational large smokestack as tracer source is not so usual. ...

The use of probabilistic plume predictions for the consequence assessment of atmospheric releases of hazardous materials

by Inderscience Publishers  (Dec. 1, 2014)

Toxic load-based toxicity models have been increasingly applied to model the effects of atmospheric releases of hazardous materials. Although the majority of atmospheric transport and dispersion models predict only a ‘mean’ plume, real-world personnel are exposed to one of many possible individual realisations of a plume, and never to a ‘mean’ ...

On formulating equations for plume spreads for near-surface releases

by Inderscience Publishers  (Oct. 16, 2014)

Recent concerns about effects of automobile emissions on the health of people living close to roads have motivated an examination of models to estimate dispersion in the surface boundary layer. This examination led to new formulations for horizontal and vertical plume spread described in Venkatram et al. (2013). Concentration estimates based on ...

A Lagrangian stochastic model for estimating the high order statistics of a fluctuating plume in the neutral boundary layer

by Inderscience Publishers  (Oct. 16, 2014)

We use a Lagrangian stochastic micromixing model to predict the concentration fluctuations of a continuous release in a neutral boundary layer. We present the computational algorithm that implements the interaction by exchange with the conditional mean model and we compare the numerical solutions with the experimental values in order to evaluate ...

Support to Aviation Control Service (SACS): an online service for near-real-time satellite monitoring of volcanic plumes

by NILU - The Norwegian Institute for Air Research  (May 16, 2014)

Volcanic eruptions emit plumes of ash and gases into the atmosphere, potentially at very high altitudes. Ash-rich plumes are hazardous for airplanes as ash is very abrasive and easily melts inside their engines. With more than 50 active volcanoes per year and the ever-increasing number of commercial flights, the safety of airplanes is a real ...

A fluctuating plume model for pollutants dispersion with chemical reactions

by Inderscience Publishers  (Oct. 13, 2012)

A fluctuating plume model for pollutant dispersion is developed. The model is able to include chemical reactions, accounting for segregation. The model is tested against measured data in wind tunnel experiment, where NO is emitted from a source in an environment of ozone. The results are presented in terms of the plume centre line dispersion and ...

Comparative study of fecal bacterial decay models for the simulation of plumes of submarine sewage outfalls

by IWA Publishing  (Aug. 8, 2013)

In the literature, analytical models have been shown to be extremely useful for estimating the decay rates of coliform as fecal indicator microorganisms, providing reliable predictions of bathing conditions in coastal and continental waters. Although a number of different formulations have been developed in the literature, each one may only be ...

Model comparison in simulating the atmospheric dispersion of a pollutant plume in low wind conditions

by Inderscience Publishers  (Oct. 13, 2012)

This study investigates the performance of different air pollution dispersion models in low wind conditions. The models have been applied to two sites frequently characterised by weak winds: the cities of Modena and Reggio Emilia, in the Po River Valley (Northern Italy). The emission sources are the municipal waste incinerator (Modena) and a ...

Case Study - Multilevel well system improved understanding of groundwater conditions in deep aquifers

by Westbay Instruments  (Apr. 30, 2015)

Westbay System delivered detailed data in less time and at a reduced cost CHALLENGE Characterizing the plume in a shallow  aquifer is simple, but investigating deeper  aquifers poses several challenges. SOLUTION MACTEC evaluated various monitoring  technologies and determined that  Westbay System modular ...

Numerical simulation of aerosols in an aircraft wake using a 3D LES solver and a detailed microphysical model

by Inderscience Publishers  (Oct. 28, 2014)

The global impact of aviation on the atmosphere is generally determined using the total amount of gas and particulate matter emitted at the aircraft engine exit but generally ignore some of the physical transformations occurring at much smaller scales in the aircraft wake. In this work, we present an offline alternative method based on the use of ...

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