Plume rise from multiple sources: A new model

Anfossi, D.; Bonino, G.; Bossa, F.; Richiardone, R.

doi:10.1016/0004-6981(78)90001-x

Cited by 36 publications

(17 citation statements)

References 4 publications

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“…Equations for the height rise of a plume with neutral and stable atmospheric temperature gradients under calm and windy conditions were derived using dimensional analysis by Briggs (1965). Anfossi et al (1978) developed a model based on the Bvirtual^stack concept for plumes from multiple stacks of different heights and emissions, to predict the maximum plume height. The predictions from their results showed good agreement with the Briggs model for stacks of equal height, and with experimental results for stacks of different heights.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of a buoyant plume from a multi-flue stack into a variable temperature gradient atmosphere

Velamati

Vivek

Sreekanth

et al. 2015

Environ Sci Pollut Res

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Air pollution is one of the major global hazards and industries have been one of its major contributors. This paper primarily focuses on analyzing the dispersion characteristics of buoyant plumes of the pollutant released from a multi-flue vertical stack into a variable temperature gradient atmosphere (α) in a constant-velocity cross wind using two stack configurations-inline and parallel. The study is conducted for different Froude numbers, Fr = 12.64, 9.55, and 8.27. The atmospheric temperature gradients considered for the study are 0, +1, +1.5, and +2 K/100 m. The numerical study is done using the commercial computational fluid dynamics (CFD) code FLUENT. The effects of stack configuration, α, and Fr on the plume characteristics are presented. It is observed that the plume rises higher and disperses over a larger area with the inline configuration due to better mixing and shielding effect. With higher α, it is seen that the plume rises initially and then descends due to variation of the buoyant force. The plume rise initially is strongly influenced by the momentum of the jet, and as it moves downstream, it is influenced by the cooling rate of the plume. Furthermore, the plume rises higher and disperses over a larger area with a decrease in Fr.

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Section: Introductionmentioning

confidence: 99%

Numerical study of a buoyant plume from a multi-flue stack into a variable temperature gradient atmosphere

Velamati

Vivek

Sreekanth

et al. 2015

Environ Sci Pollut Res

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“…However flush-mounted and elevated jet cases were considered separately without being compared. This is the case in papers of Briggs [2,3], Anfossi et al [4] and Gangoiti et al [5].…”

Section: Introductionmentioning

confidence: 89%

“…Based upon Briggs' two semi-empirical models [2.3], relative to two inline similarly elevated jets, Anfossi et al [4] developed a "virtual" stack concept able to compute the rise of the resulting plume of two inline variably elevated jets. The model was first validated in the case of stacks of similar height and emission conditions with reference to Brigg's experimental data [2].…”

Section: Introductionmentioning

confidence: 99%

Near Field Structure of Twin Tandem Inclined and Variably El-Evated Jets in Crossflow

Radhouane¹,

Mahjoub²,

Mhiri³

et al. 2014

Proceedings of 10th World Congress on Computational Mechanics

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“…In addition, the stack height of boiler and steam generator is lower than the trigenerator one (Table 1). The dynamic plume rise is calculated by SPRAY as reported in Anfossi et al (1993), with a conservative approach, and possible rise enhancement effects due to merged plumes respect to single emissions (Anfossi et al 1978;Anfossi 1985) are not considered. The combined effect of exit velocity of exhausts and stack height is well shown by the vertical NO x concentration profiles in the atmosphere.…”

Section: New Plant Emissions: the Individual Contribution Of The Devicesmentioning

confidence: 99%

Tri-generation power plant and conventional boilers: pollutant flow rate and atmospheric impact of stack emissions

Ghermandi

Teggi

Fabbi

et al. 2014

Int. J. Environ. Sci. Technol.

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The atmospheric impact of stack emissions from a power plant (tri-generator and boilers) that will be installed in an urban area in the central Po valley (Northern Italy), characterized by calm wind events, is studied and compared with the impact of the existing plant (conventional boilers). Both the plants are supplied by methane gas. The atmospheric dispersion of NO x emitted is simulated, both in the current and future scenario, by the software package ARIA INDUSTRY. The NO x emission rates are set equal to the regulatory emission limits for existing and future boilers, while the tri-generation system emission rates are set equal to the emission limits certified by the system manufacturer. The simulation periods focus over the 2010 winter season. The simulation estimates the impact of NO x emissions on air quality (vertical concentration profiles and concentration maps at the ground) in the urban area close to the plant. The future power plant impact on air quality results lower than the impact of the existing plant, even if the yearly total mass of pollutants emitted in atmosphere from the new power plant is higher than from the existing plant. The emissions of conventional boilers result the main responsible of the air pollution at the ground in the future scenario.

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Plume rise from multiple sources: A new model

Cited by 36 publications

References 4 publications

Numerical study of a buoyant plume from a multi-flue stack into a variable temperature gradient atmosphere

Numerical study of a buoyant plume from a multi-flue stack into a variable temperature gradient atmosphere

Near Field Structure of Twin Tandem Inclined and Variably El-Evated Jets in Crossflow

Tri-generation power plant and conventional boilers: pollutant flow rate and atmospheric impact of stack emissions

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