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Parametric study on the performance of an air curtain based on CFD simulations - New proposal for automatic operation

2019-08Journal article Restricted access
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dc.contributor.authorGoncalves, J. C.
dc.contributor.authorCosta, J.J.
dc.contributor.authorLopes, A.M.G.
dc.date.accessioned2020-01-15T13:23:22Z
dc.date.issued2019-08
dc.description.abstractThis paper presents a parametric study on the performance of an air curtain installed over an access door of a refrigerated room. The aim of this work is to quantify, in an integrated way, the influence of the following geometrical and dynamic parameters: door height; temperature difference between rooms, nozzle thickness; initial orientation angle; jet discharge velocity. A numerical model was used to simulate the turbulent non-isothermal 3D airflow generated in the transient period after the door is opened, with the air curtain device turned on or off. Turbulence effects were taken into account with the k-SST model. Results show that the optimum discharge velocity of the air curtain increases with the door height, as well as with the temperature difference between both sides of the air curtain. It was also possible to find an optimum jet nozzle width corresponding to maximum sealing efficiency and lower jet airflow rate. A proposal is made for an empirical correlation to predict the optimum jet discharge velocity as function of the variables used in the parametric study. Additionally, to ensure that the air curtain operates near the optimum conditions, the appropriate air curtain settings are discussed and a new strategy is suggested.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGonçalves, J.C., Costa, J.J., & Lopes, A.M.G. (2019). Parametric study on the performance of an air curtain based on CFD simulations - New proposal for automatic operation. Journal of Wind Engineering and Industrial Aerodynamics, 193 (103951), 1-11. Doi: https://doi.org/10.1016/j.jweia.2019.103951pt_PT
dc.identifier.doi10.1016/j.jweia.2019.103951pt_PT
dc.identifier.issn0167-6105
dc.identifier.urihttp://hdl.handle.net/10400.19/6101
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherJournal of Wind Engineering and Industrial Aerodynamicspt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0167610519305422?via%3Dihubpt_PT
dc.subjectParametric studypt_PT
dc.subjectCFDpt_PT
dc.subjectAir curtainpt_PT
dc.subjectHeat transferpt_PT
dc.subjectSealing efficiencypt_PT
dc.subjectCold roomspt_PT
dc.titleParametric study on the performance of an air curtain based on CFD simulations - New proposal for automatic operationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage103951pt_PT
oaire.citation.titleJournal of Wind Engineering and Industrial Aerodynamicspt_PT
oaire.citation.volume193pt_PT
person.familyNameGonçalves
person.givenNameJoão Carlos
person.identifier1299655
person.identifier.ciencia-idE411-A4A3-F728
person.identifier.orcid0000-0003-3763-1503
person.identifier.scopus-author-id55951854100
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication397e6196-5fed-44bb-b807-dacd9b85ae27
relation.isAuthorOfPublication.latestForDiscovery397e6196-5fed-44bb-b807-dacd9b85ae27

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