Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel

The laminar mixing performance in a cylindrical vessel agitated by a plate impeller is investigated. Several mixing enhancement strategies such as baffling, shaft eccentricity and angularly-oscillating impeller (unsteady mixing) are considered. The flow equations are solved numerically via a Lagrang...

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Main Authors: Ng K.C., Ng E.Y.K.
Other Authors: 55310814500
Format: Article
Published: Elsevier Ltd 2023
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Institution: Universiti Tenaga Nasional
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spelling my.uniten.dspace-294472023-12-28T12:13:08Z Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel Ng K.C. Ng E.Y.K. 55310814500 7201647536 Baffle Eccentricity Laminar mixing Moving Particle Semi-implicit (MPS) Unsteady mixing Impellers Baffle Cylindrical vessels Eccentricity Lagrangian particle method Laminar mixing Moving particle semi-implicit Oscillating amplitudes Shaft eccentricity Mixing The laminar mixing performance in a cylindrical vessel agitated by a plate impeller is investigated. Several mixing enhancement strategies such as baffling, shaft eccentricity and angularly-oscillating impeller (unsteady mixing) are considered. The flow equations are solved numerically via a Lagrangian particle method based on the Moving Particle Semi-implicit (MPS) technique. It is observed that radial mixing is poor in an unbaffled vessel agitated by a concentric impeller undergoing steady rotation. In general, baffling has marginally improved the radial momentum exchange between the near-wall and inner fluid particles. This shortcoming can be alleviated by introducing the shaft eccentricity and the unsteady mixing procedure. In general, the unsteady mixing procedure with the smaller oscillating amplitude outperforms all the mixing enhancement strategies considered in the current study. � 2013 Elsevier Ltd. Final 2023-12-28T04:13:08Z 2023-12-28T04:13:08Z 2013 Article 10.1016/j.ces.2013.10.031 2-s2.0-84887366622 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887366622&doi=10.1016%2fj.ces.2013.10.031&partnerID=40&md5=594f3589ab29de8b2ba327117e9ecdee https://irepository.uniten.edu.my/handle/123456789/29447 104 960 974 Elsevier Ltd Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
topic Baffle
Eccentricity
Laminar mixing
Moving Particle Semi-implicit (MPS)
Unsteady mixing
Impellers
Baffle
Cylindrical vessels
Eccentricity
Lagrangian particle method
Laminar mixing
Moving particle semi-implicit
Oscillating amplitudes
Shaft eccentricity
Mixing
spellingShingle Baffle
Eccentricity
Laminar mixing
Moving Particle Semi-implicit (MPS)
Unsteady mixing
Impellers
Baffle
Cylindrical vessels
Eccentricity
Lagrangian particle method
Laminar mixing
Moving particle semi-implicit
Oscillating amplitudes
Shaft eccentricity
Mixing
Ng K.C.
Ng E.Y.K.
Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel
description The laminar mixing performance in a cylindrical vessel agitated by a plate impeller is investigated. Several mixing enhancement strategies such as baffling, shaft eccentricity and angularly-oscillating impeller (unsteady mixing) are considered. The flow equations are solved numerically via a Lagrangian particle method based on the Moving Particle Semi-implicit (MPS) technique. It is observed that radial mixing is poor in an unbaffled vessel agitated by a concentric impeller undergoing steady rotation. In general, baffling has marginally improved the radial momentum exchange between the near-wall and inner fluid particles. This shortcoming can be alleviated by introducing the shaft eccentricity and the unsteady mixing procedure. In general, the unsteady mixing procedure with the smaller oscillating amplitude outperforms all the mixing enhancement strategies considered in the current study. � 2013 Elsevier Ltd.
author2 55310814500
author_facet 55310814500
Ng K.C.
Ng E.Y.K.
format Article
author Ng K.C.
Ng E.Y.K.
author_sort Ng K.C.
title Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel
title_short Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel
title_full Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel
title_fullStr Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel
title_full_unstemmed Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel
title_sort laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel
publisher Elsevier Ltd
publishDate 2023
_version_ 1806426144851886080