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| rdf:type
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| Description
| - Low-speed wind tunnels have been used for simulation of a wide range of physical phenomena. One of their possible applications is the simulation of the motion and dispersion of gas pollutants of different densities from point, line or volume sources. If the modeled area, together with the source, is downscaled geometrically and pollutant release is limited (under unchanged atmospheric conditions), the plume of pollutants may exhibit characteristics different from those observed in real conditions. These differences include not only the shape of the plume, but also the ability of the plume to climb or descend in the atmosphere. Plume vertical motions are particularly important for the resulting plume motion and dispersion in the real atmosphere. The objective of the analysis is to test the effects of three selected physical parameters on the shape and motion of gas pollutant plumes. The three selected parameters include pollutant density, velocity of the flowing air that carries the pollutant, and model scale. In the study’s conclusion, several principles are presented that govern the behavior of gas pollutant plumes, particularly in immediate proximity to the source, when the above-mentioned parameters are modified. These principles can be used by investigators who prepare and conduct physical experiments of this kind, either at small scales in wind tunnels or at large scales in real conditions. All statements and conclusions are deduced analytically, especially from the Froude number equation, and demonstrated on the results of a numerical model. One of the world’s most sophisticated CFD codes—ANSYS Fluent 13.0—was used to demonstrate and visualize the problem.
- Low-speed wind tunnels have been used for simulation of a wide range of physical phenomena. One of their possible applications is the simulation of the motion and dispersion of gas pollutants of different densities from point, line or volume sources. If the modeled area, together with the source, is downscaled geometrically and pollutant release is limited (under unchanged atmospheric conditions), the plume of pollutants may exhibit characteristics different from those observed in real conditions. These differences include not only the shape of the plume, but also the ability of the plume to climb or descend in the atmosphere. Plume vertical motions are particularly important for the resulting plume motion and dispersion in the real atmosphere. The objective of the analysis is to test the effects of three selected physical parameters on the shape and motion of gas pollutant plumes. The three selected parameters include pollutant density, velocity of the flowing air that carries the pollutant, and model scale. In the study’s conclusion, several principles are presented that govern the behavior of gas pollutant plumes, particularly in immediate proximity to the source, when the above-mentioned parameters are modified. These principles can be used by investigators who prepare and conduct physical experiments of this kind, either at small scales in wind tunnels or at large scales in real conditions. All statements and conclusions are deduced analytically, especially from the Froude number equation, and demonstrated on the results of a numerical model. One of the world’s most sophisticated CFD codes—ANSYS Fluent 13.0—was used to demonstrate and visualize the problem. (en)
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| Title
| - Physical Modelling of Gas Pollutant Motion in the Atmosphere
- Physical Modelling of Gas Pollutant Motion in the Atmosphere (en)
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| skos:prefLabel
| - Physical Modelling of Gas Pollutant Motion in the Atmosphere
- Physical Modelling of Gas Pollutant Motion in the Atmosphere (en)
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| skos:notation
| - RIV/61989100:27200/12:86081645!RIV13-MZP-27200___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27200/12:86081645
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - gravity force; inertial force; pollutant; gas; mathematical model; Froude number; CFD; Wind tunnel (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - Advances in Modeling of Fluid Dynamics
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...v/pocetStranKnihy
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
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| number of pages
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| http://bibframe.org/vocab/doi
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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