Numerical Simulation of the Motion of Aerosol Particles in Open Cell Foam Materials

Соловьев, С. А.; Soloveva, O. V.; Popkova, O. S.

doi:10.1134/s0036024418030275

Cited by 24 publications

(4 citation statements)

References 9 publications

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“…In the course of numerical studies, the diameters of spherical water droplets were changed from 0.1 up to 2 mm, as well as the average gas consumption rate was changed from 1 up to 3 m/sec. Modification of the two-parameter turbulence model k-ω SST-model, showing satisfactory agreement with experimental data, obtained during earlier studies [9,10], is chosen as the main model. Boundary conditions: it was assumed that all surfaces of contact elements meet the condition of adhesion.…”

Section: Description Of the Study And Its Resultsmentioning

confidence: 62%

Efficiency of cooling the water droplets within Jet-Film unit of cooling tower filler

2018

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Researches of blocks of sprinklers of cooling towers with jet-film devices are presented. The conducted numerical studies allow us to estimate the influence of the design and operating parameters of the proposed contact device on the efficiency of the process of cooling the recycled water. The increase in the average gas velocity leads to a more intense flow of water drops and more efficient cooling. To achieve high performance, it is necessary to create zones of drip interaction of phases with droplet sizes up to 100 µm at relatively low speeds of two-phase gas-liquid flow. Under such conditions, the drop can be cooled by more than 10°C within one contact stage. The proposed sprinkler units with jet-film contact devices will be able to achieve a lower level of cooling water temperatures in the cooling towers of industrial enterprises at relatively low operating costs.

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Section: Description Of the Study And Its Resultsmentioning

confidence: 62%

Efficiency of cooling the water droplets within Jet-Film unit of cooling tower filler

2018

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“…The open cell foam material is used in many industries. Low aerodynamic resistance, large surface area, and disordered cells' arrangement make it possible to use them as aerosol filters [1,2]. As a rule, filters based on OCF are used in contrast to granular filters with spherical elements [3], the porosity of which is limited by the limit of granule packing.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the effective porosity of an open cell foam material for using in heat and mass transfer numerical simulations

et al. 2021

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A comparison of the efficiency of the open cell foam (OCF) models is carried out. Geometrical models are constructed by the methods of simple cubic, body-centered cubic, and face-centered cubic. The parameter of the material efficiency is defined as the composition of the material surface area and the gas residence time in the porous media. The analytical evaluation shows different values of effective porosity for different construction models of the material. In this case, for all considered models, the effective porosity is in the range of 0.741-0.821.

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“…The mechanism of particle capture is closely related to the parameters of the filters themselves-more precisely, to the granules, which are the filtering material-such as the method and porosity of the packing, the size, and shape of the granules; the hydrodynamic resistance of the filter depends on these parameters. The liquid or gas flow rate also makes a significant contribution to the filtration process [11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Aerosol Particle Motion in Granular Filters with Solid and Porous Granules

2021

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In this work, a study was carried out to compare the filtering and hydrodynamic properties of granular filters with solid spherical granules and spherical granules with modifications in the form of micropores. We used the discrete element method (DEM) to construct the geometry of the filters. Models of granular filters with spherical granules with diameters of 3, 4, and 5 mm, and with porosity values of 0.439, 0.466, and 0.477, respectively, were created. The results of the numerical simulation are in good agreement with the experimental data of other authors. We created models of granular filters containing micropores with different porosity values (0.158–0.366) in order to study the micropores’ effect on the aerosol motion. The study showed that micropores contribute to a decrease in hydrodynamic resistance and an increase in particle deposition efficiency. There is also a maximum limiting value of the granule microporosity for a given aerosol particle diameter when a further increase in microporosity leads to a decrease in the deposition efficiency.

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Numerical Simulation of the Motion of Aerosol Particles in Open Cell Foam Materials

Cited by 24 publications

References 9 publications

Efficiency of cooling the water droplets within Jet-Film unit of cooling tower filler

Efficiency of cooling the water droplets within Jet-Film unit of cooling tower filler

Evaluation of the effective porosity of an open cell foam material for using in heat and mass transfer numerical simulations

Numerical Simulation of the Aerosol Particle Motion in Granular Filters with Solid and Porous Granules

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