| Form of presentation | Articles in international journals and collections |
| Year of publication | 2021 |
| Язык | английский |
|
Zaripov Shamil Khuzeevich, author
Mardanov Renat Faritovich, author
|
| Bibliographic description in the original language |
Mardanov R.F, Zaripov S.K, Sharafutdinov V.F., A new periodic cell model of aerosol diffusion deposition in a fibrous filter//Separation and Purification Technology. - 2021. - Vol.257, Is.. - Art. № 117848. |
| Annotation |
A new periodic cell model for the convective-diffusive transport of small aerosol particles in a fibrous filter is
developed. The proposed periodic model takes into account the influence of the fiber diffusion wake on the
particle deposition. This allows us to predict the efficiency of a filter more accurately compared to the single-fiber
approximations. The fluid flow is described in the framework of Stokes flow in a rectangular periodic cell. New
form of periodic boundary conditions for the particle transport equation in the cell is suggested. The equations of
fluid flow and particle transport are solved using the Boundary Element Method (BEM) and Boundary Domain
Integral Method (BDIM).
The diffusive deposition of nanoaerosols in the filter, modeled as a row of the large number of circular cylinders
located perpendicular to the flow direction, is studied numerically using the many fibers model. It is
shown, that predictions of the new periodic model are in the better agreement with the many fibers model for the
filters of greater length. It is also shown, that the widely used approximation for single fiber deposition efficiency
(Stechkina, 1967) overestimates the efficiency of multi-fiber filter compared to periodic model. The overestimation
increases with increase of Peclet number.
The approximate formula for the single fiber particle deposition efficiency in a periodic cell for a square and
staggered cylinder arrays is derived. The formula accounts for the effect of the Peclet number and the hydrodynamic
factor. The predictions of the derived formula are compared to the numerical data from the work of
Hosseini and Tafreshi (2010) for the fibrous filter comprised of many randomly arranged cylinders. The predictions
of the diffusive deposition efficiency obtained using the derived formula for the staggered fibers array
are shown to be in a good agreement with the numerical model predictions. |
| Keywords |
Convection-diffusion equation
Particle deposition
Single fiber efficiency
Periodic cell
Boundary domain integral method |
| The name of the journal |
Separation and Purification Technology
|
| URL |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092913264&doi=10.1016%2fj.seppur.2020.117848&partnerID=40&md5=068b1729a12384150b8f4c03702a3c49 |
| Please use this ID to quote from or refer to the card |
https://repository.kpfu.ru/eng/?p_id=241271&p_lang=2 |
Full metadata record  |
| Field DC |
Value |
Language |
| dc.contributor.author |
Zaripov Shamil Khuzeevich |
ru_RU |
| dc.contributor.author |
Mardanov Renat Faritovich |
ru_RU |
| dc.date.accessioned |
2021-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2021-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2021 |
ru_RU |
| dc.identifier.citation |
Mardanov R.F, Zaripov S.K, Sharafutdinov V.F., A new periodic cell model of aerosol diffusion deposition in a fibrous filter//Separation and Purification Technology. - 2021. - Vol.257, Is.. - Art. № 117848. |
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/eng/?p_id=241271&p_lang=2 |
ru_RU |
| dc.description.abstract |
Separation and Purification Technology |
ru_RU |
| dc.description.abstract |
A new periodic cell model for the convective-diffusive transport of small aerosol particles in a fibrous filter is
developed. The proposed periodic model takes into account the influence of the fiber diffusion wake on the
particle deposition. This allows us to predict the efficiency of a filter more accurately compared to the single-fiber
approximations. The fluid flow is described in the framework of Stokes flow in a rectangular periodic cell. New
form of periodic boundary conditions for the particle transport equation in the cell is suggested. The equations of
fluid flow and particle transport are solved using the Boundary Element Method (BEM) and Boundary Domain
Integral Method (BDIM).
The diffusive deposition of nanoaerosols in the filter, modeled as a row of the large number of circular cylinders
located perpendicular to the flow direction, is studied numerically using the many fibers model. It is
shown, that predictions of the new periodic model are in the better agreement with the many fibers model for the
filters of greater length. It is also shown, that the widely used approximation for single fiber deposition efficiency
(Stechkina, 1967) overestimates the efficiency of multi-fiber filter compared to periodic model. The overestimation
increases with increase of Peclet number.
The approximate formula for the single fiber particle deposition efficiency in a periodic cell for a square and
staggered cylinder arrays is derived. The formula accounts for the effect of the Peclet number and the hydrodynamic
factor. The predictions of the derived formula are compared to the numerical data from the work of
Hosseini and Tafreshi (2010) for the fibrous filter comprised of many randomly arranged cylinders. The predictions
of the diffusive deposition efficiency obtained using the derived formula for the staggered fibers array
are shown to be in a good agreement with the numerical model predictions. |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
|
ru_RU |
| dc.title |
A new periodic cell model of aerosol diffusion deposition in a fibrous filter |
ru_RU |
| dc.type |
Articles in international journals and collections |
ru_RU |
|
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