No Cover Image

Journal article 1005 views

Reverse roll-coating flow: a computational investigation towards high-speed defect free coating

F Belblidia, H. R Tamaddon-Jahromi, S. O. S Echendu, M. F Webster, Michael Webster Orcid Logo, Fawzi Belblidia Orcid Logo

Mechanics of Time-Dependent Materials

Swansea University Authors: Michael Webster Orcid Logo, Fawzi Belblidia Orcid Logo

Full text not available from this repository: check for access using links below.

Check full text

DOI (Published version): 10.1007/s11043-012-9204-y

Abstract

A finite element Taylor–Galerkin pressure-correction algorithm is employed to simulate a high-speed defect-free roll-coating flow, which substantiates a coating process with a free meniscus surface. Findings are applicable across a wide range of coating sectors in optimisation of coating performance...

Full description

Published in: Mechanics of Time-Dependent Materials
ISSN: 1385-2000 1573-2738
Published: 2013
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa15029
first_indexed 2013-07-23T12:13:42Z
last_indexed 2018-02-09T04:46:43Z
id cronfa15029
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2013-06-10T09:05:28.3466856</datestamp><bib-version>v2</bib-version><id>15029</id><entry>2013-06-10</entry><title>Reverse roll-coating flow: a computational investigation towards high-speed defect free coating</title><swanseaauthors><author><sid>b6a811513b34d56e66489512fc2c6c61</sid><ORCID>0000-0002-7722-821X</ORCID><firstname>Michael</firstname><surname>Webster</surname><name>Michael Webster</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>7e0feb96ca2d685180b495e8983f3940</sid><ORCID>0000-0002-8170-0468</ORCID><firstname>Fawzi</firstname><surname>Belblidia</surname><name>Fawzi Belblidia</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2013-06-10</date><abstract>A finite element Taylor&#x2013;Galerkin pressure-correction algorithm is employed to simulate a high-speed defect-free roll-coating flow, which substantiates a coating process with a free meniscus surface. Findings are applicable across a wide range of coating sectors in optimisation of coating performance, which targets adaptive and intelligent process control. Industrially, there is a major drive towards using new material products and raising coating line-speeds, to address increased efficiency and productivity. This study has sought to attack these issues by developing an effective predictive toolset for high-speed defect-free coatings. Here, time-stepping/finite element methods are deployed to model this free-surface problem that involves the transfer of a coating fluid from a roller to a substrate (of prescribed wet-film thickness). This procedure is used in conjunction with a set of constitutive equations capable of describing the relevant fluid-film rheology in appropriate detail. Quantities of pressure, lift and drag have been calculated streamwise across the flow domain, and streamline patterns reveal a large recirculating vortex around the meniscus region. Such pressure distributions across the domain display a positive peak which decreases as nip-gap size increases. Further analysis has been conducted, mimicking the presence of a wetting line, whilst varying boundary conditions at the nip. Observation has shown that such inclusion would serve as a relief mechanism to the positive peak pressures generated around the nip zone. Here, through an elasto-hydrodynamic formulation, the elastic deformation of a rubber roll cover (elastomer) has also been introduced, which offers fresh insight into the process with respect to nip-flow behaviour, and allows for the analysis of both positive and negative nip-gaps.</abstract><type>Journal Article</type><journal>Mechanics of Time-Dependent Materials</journal><volume></volume><journalNumber></journalNumber><paginationStart/><paginationEnd/><publisher/><placeOfPublication/><issnPrint>1385-2000</issnPrint><issnElectronic>1573-2738</issnElectronic><keywords/><publishedDay>31</publishedDay><publishedMonth>12</publishedMonth><publishedYear>2013</publishedYear><publishedDate>2013-12-31</publishedDate><doi>10.1007/s11043-012-9204-y</doi><url/><notes/><college>COLLEGE NANME</college><CollegeCode>COLLEGE CODE</CollegeCode><institution>Swansea University</institution><apcterm/><lastEdited>2013-06-10T09:05:28.3466856</lastEdited><Created>2013-06-10T09:05:28.3466856</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Uncategorised</level></path><authors><author><firstname>F</firstname><surname>Belblidia</surname><order>1</order></author><author><firstname>H. R</firstname><surname>Tamaddon-Jahromi</surname><order>2</order></author><author><firstname>S. O. S</firstname><surname>Echendu</surname><order>3</order></author><author><firstname>M. F</firstname><surname>Webster</surname><order>4</order></author><author><firstname>Michael</firstname><surname>Webster</surname><orcid>0000-0002-7722-821X</orcid><order>5</order></author><author><firstname>Fawzi</firstname><surname>Belblidia</surname><orcid>0000-0002-8170-0468</orcid><order>6</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2013-06-10T09:05:28.3466856 v2 15029 2013-06-10 Reverse roll-coating flow: a computational investigation towards high-speed defect free coating b6a811513b34d56e66489512fc2c6c61 0000-0002-7722-821X Michael Webster Michael Webster true false 7e0feb96ca2d685180b495e8983f3940 0000-0002-8170-0468 Fawzi Belblidia Fawzi Belblidia true false 2013-06-10 A finite element Taylor–Galerkin pressure-correction algorithm is employed to simulate a high-speed defect-free roll-coating flow, which substantiates a coating process with a free meniscus surface. Findings are applicable across a wide range of coating sectors in optimisation of coating performance, which targets adaptive and intelligent process control. Industrially, there is a major drive towards using new material products and raising coating line-speeds, to address increased efficiency and productivity. This study has sought to attack these issues by developing an effective predictive toolset for high-speed defect-free coatings. Here, time-stepping/finite element methods are deployed to model this free-surface problem that involves the transfer of a coating fluid from a roller to a substrate (of prescribed wet-film thickness). This procedure is used in conjunction with a set of constitutive equations capable of describing the relevant fluid-film rheology in appropriate detail. Quantities of pressure, lift and drag have been calculated streamwise across the flow domain, and streamline patterns reveal a large recirculating vortex around the meniscus region. Such pressure distributions across the domain display a positive peak which decreases as nip-gap size increases. Further analysis has been conducted, mimicking the presence of a wetting line, whilst varying boundary conditions at the nip. Observation has shown that such inclusion would serve as a relief mechanism to the positive peak pressures generated around the nip zone. Here, through an elasto-hydrodynamic formulation, the elastic deformation of a rubber roll cover (elastomer) has also been introduced, which offers fresh insight into the process with respect to nip-flow behaviour, and allows for the analysis of both positive and negative nip-gaps. Journal Article Mechanics of Time-Dependent Materials 1385-2000 1573-2738 31 12 2013 2013-12-31 10.1007/s11043-012-9204-y COLLEGE NANME COLLEGE CODE Swansea University 2013-06-10T09:05:28.3466856 2013-06-10T09:05:28.3466856 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised F Belblidia 1 H. R Tamaddon-Jahromi 2 S. O. S Echendu 3 M. F Webster 4 Michael Webster 0000-0002-7722-821X 5 Fawzi Belblidia 0000-0002-8170-0468 6
title Reverse roll-coating flow: a computational investigation towards high-speed defect free coating
spellingShingle Reverse roll-coating flow: a computational investigation towards high-speed defect free coating
Michael Webster
Fawzi Belblidia
title_short Reverse roll-coating flow: a computational investigation towards high-speed defect free coating
title_full Reverse roll-coating flow: a computational investigation towards high-speed defect free coating
title_fullStr Reverse roll-coating flow: a computational investigation towards high-speed defect free coating
title_full_unstemmed Reverse roll-coating flow: a computational investigation towards high-speed defect free coating
title_sort Reverse roll-coating flow: a computational investigation towards high-speed defect free coating
author_id_str_mv b6a811513b34d56e66489512fc2c6c61
7e0feb96ca2d685180b495e8983f3940
author_id_fullname_str_mv b6a811513b34d56e66489512fc2c6c61_***_Michael Webster
7e0feb96ca2d685180b495e8983f3940_***_Fawzi Belblidia
author Michael Webster
Fawzi Belblidia
author2 F Belblidia
H. R Tamaddon-Jahromi
S. O. S Echendu
M. F Webster
Michael Webster
Fawzi Belblidia
format Journal article
container_title Mechanics of Time-Dependent Materials
publishDate 2013
institution Swansea University
issn 1385-2000
1573-2738
doi_str_mv 10.1007/s11043-012-9204-y
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description A finite element Taylor–Galerkin pressure-correction algorithm is employed to simulate a high-speed defect-free roll-coating flow, which substantiates a coating process with a free meniscus surface. Findings are applicable across a wide range of coating sectors in optimisation of coating performance, which targets adaptive and intelligent process control. Industrially, there is a major drive towards using new material products and raising coating line-speeds, to address increased efficiency and productivity. This study has sought to attack these issues by developing an effective predictive toolset for high-speed defect-free coatings. Here, time-stepping/finite element methods are deployed to model this free-surface problem that involves the transfer of a coating fluid from a roller to a substrate (of prescribed wet-film thickness). This procedure is used in conjunction with a set of constitutive equations capable of describing the relevant fluid-film rheology in appropriate detail. Quantities of pressure, lift and drag have been calculated streamwise across the flow domain, and streamline patterns reveal a large recirculating vortex around the meniscus region. Such pressure distributions across the domain display a positive peak which decreases as nip-gap size increases. Further analysis has been conducted, mimicking the presence of a wetting line, whilst varying boundary conditions at the nip. Observation has shown that such inclusion would serve as a relief mechanism to the positive peak pressures generated around the nip zone. Here, through an elasto-hydrodynamic formulation, the elastic deformation of a rubber roll cover (elastomer) has also been introduced, which offers fresh insight into the process with respect to nip-flow behaviour, and allows for the analysis of both positive and negative nip-gaps.
published_date 2013-12-31T10:47:31Z
_version_ 1850664971089739776
score 11.088971

Similar Items