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Article: Bio-inspired patterned surface for submicron particle deposition in a fully developed turbulent duct

TitleBio-inspired patterned surface for submicron particle deposition in a fully developed turbulent duct
Authors
KeywordsBio-inspired
Surface rib array
Particle deposition
Submicron particles
Fully developed turbulent flow
Issue Date2020
PublisherTsinghua University Press & Springer-Verlag GmbH. The Journal's web site is located at http://link.springer.com/journal/12273
Citation
Building Simulation, 2020, v. 13 n. 5, p. 1111-1123 How to Cite?
AbstractArrays of surface ribs have been reported to significantly enhance particle collection efficiency in particle removal devices. However, the surface ribs also cause a higher pressure drop. Therefore, the overall performance needs to take into consideration the above factors. In this study, different forms of surface ribs inspired by nature were designed and parametric studies were performed to enhance deposition efficiency. Our parametric studies comprised three different aspects: geometry of the patterned surface, pitch-to-height ratio, and particle size. The flow field around patterned surfaces was simulated in a two-dimensional channel flow by using the Reynolds stress model, corrected by turbulence velocity fluctuation in the wall-normal direction. The particle trajectory was solved by using Lagrangian particle tracking. When the overall efficiency ratio was considered, a semi-circular pattern had the best overall efficiency with 1137 times increase when compared to the case without patterns. Although the open-circular pattern has the minimum particle deposition enhancement, the overall efficiency of the open-circular pattern has 862 times increase compared to the case without patterns. Surface ribs (semi-circular, triangular and rectangular) can achieve a higher particle deposition velocity, but a higher flow resistance is generated compared with applying the open-circular surface ribs. The deposition location was then investigated for different surface ribs at different pitch-to-height ratios (p/e). This study shows that the semi-circular surface pattern should be recommended to enhance the overall performance of particle removal devices, especially for submicron particles.
Persistent Identifierhttp://hdl.handle.net/10722/286224
ISSN
2023 Impact Factor: 6.1
2023 SCImago Journal Rankings: 1.326
ISI Accession Number ID
Grants

 

DC FieldValueLanguage
dc.contributor.authorXu, H-
dc.contributor.authorFu, SC-
dc.contributor.authorChan, KC-
dc.contributor.authorQiu, H-
dc.contributor.authorChao, CYH-
dc.date.accessioned2020-08-31T07:00:54Z-
dc.date.available2020-08-31T07:00:54Z-
dc.date.issued2020-
dc.identifier.citationBuilding Simulation, 2020, v. 13 n. 5, p. 1111-1123-
dc.identifier.issn1996-3599-
dc.identifier.urihttp://hdl.handle.net/10722/286224-
dc.description.abstractArrays of surface ribs have been reported to significantly enhance particle collection efficiency in particle removal devices. However, the surface ribs also cause a higher pressure drop. Therefore, the overall performance needs to take into consideration the above factors. In this study, different forms of surface ribs inspired by nature were designed and parametric studies were performed to enhance deposition efficiency. Our parametric studies comprised three different aspects: geometry of the patterned surface, pitch-to-height ratio, and particle size. The flow field around patterned surfaces was simulated in a two-dimensional channel flow by using the Reynolds stress model, corrected by turbulence velocity fluctuation in the wall-normal direction. The particle trajectory was solved by using Lagrangian particle tracking. When the overall efficiency ratio was considered, a semi-circular pattern had the best overall efficiency with 1137 times increase when compared to the case without patterns. Although the open-circular pattern has the minimum particle deposition enhancement, the overall efficiency of the open-circular pattern has 862 times increase compared to the case without patterns. Surface ribs (semi-circular, triangular and rectangular) can achieve a higher particle deposition velocity, but a higher flow resistance is generated compared with applying the open-circular surface ribs. The deposition location was then investigated for different surface ribs at different pitch-to-height ratios (p/e). This study shows that the semi-circular surface pattern should be recommended to enhance the overall performance of particle removal devices, especially for submicron particles.-
dc.languageeng-
dc.publisherTsinghua University Press & Springer-Verlag GmbH. The Journal's web site is located at http://link.springer.com/journal/12273-
dc.relation.ispartofBuilding Simulation-
dc.rightsThis is a post-peer-review, pre-copyedit version of an article published in Building Simulation. The final authenticated version is available online at: https://doi.org/10.1007/s12273-020-0681-7-
dc.subjectBio-inspired-
dc.subjectSurface rib array-
dc.subjectParticle deposition-
dc.subjectSubmicron particles-
dc.subjectFully developed turbulent flow-
dc.titleBio-inspired patterned surface for submicron particle deposition in a fully developed turbulent duct-
dc.typeArticle-
dc.identifier.emailFu, SC: scfu@hku.hk-
dc.identifier.emailChan, KC: mekcchan@hku.hk-
dc.identifier.emailChao, CYH: cyhchao@hku.hk-
dc.identifier.authorityFu, SC=rp02549-
dc.identifier.authorityChao, CYH=rp02396-
dc.description.naturepostprint-
dc.identifier.doi10.1007/s12273-020-0681-7-
dc.identifier.scopuseid_2-s2.0-85089025590-
dc.identifier.hkuros313323-
dc.identifier.volume13-
dc.identifier.issue5-
dc.identifier.spage1111-
dc.identifier.epage1123-
dc.identifier.isiWOS:000556144700001-
dc.publisher.placeChina-
dc.relation.projectInvestigation of enhancement of particle deposition by micro-structured surfaces in turbulent flows-
dc.identifier.issnl1996-3599-

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