Show simple item record

dc.contributor.authorTrivedi, S
dc.contributor.authorCant, RS
dc.date.accessioned2022-05-23T15:01:09Z
dc.date.available2022-05-23T15:01:09Z
dc.date.issued2022
dc.date.submitted2021-08-02
dc.identifier.citationFlow, Turbulence and Combustion, volume 109, issue 1, page 101-123
dc.identifier.issn1386-6184
dc.identifier.others10494-021-00315-5
dc.identifier.other315
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/337404
dc.description.abstractThe effects of varying turbulence intensity and turbulence length scale on premixed turbulent flame propagation are investigated using Direct Numerical Simulation (DNS). The DNS dataset contains the results of a set of turbulent flame simulations based on separate and systematic changes in either turbulence intensity or turbulence integral length scale while keeping all other parameters constant. All flames considered are in the thin reaction zones regime. Several aspects of flame behaviour are analysed and compared, either by varying the turbulence intensity at constant integral length scale, or by varying the integral length scale at constant turbulence intensity. The turbulent flame speed is found to increase with increasing turbulence intensity and also with increasing integral length scale. Changes in the turbulent flame speed are generally accounted for by changes in the flame surface area, but some deviation is observed at high values of turbulence intensity. The probability density functions (pdfs) of tangential strain rate and mean flame curvature are found to broaden with increasing turbulence intensity and also with decreasing integral length scale. The response of the correlation between tangential strain rate and mean flame curvature is also investigated. The statistics of displacement speed and its components are analysed, and the findings indicate that changes in response to decreasing integral length scale are broadly similar to those observed for increasing turbulence intensity, although there are some interesting differences. These findings serve to improve current understanding of the role of turbulence length scales in flame propagation.
dc.languageen
dc.publisherSpringer Science and Business Media LLC
dc.subjectArticle
dc.subjectTurbulent premixed flames
dc.subjectTurbulence intensity
dc.subjectTurbulence integral length scale
dc.titleTurbulence Intensity and Length Scale Effects on Premixed Turbulent Flame Propagation
dc.typeArticle
dc.date.updated2022-05-23T15:01:08Z
prism.publicationNameFlow, Turbulence and Combustion
dc.identifier.doi10.17863/CAM.84816
dcterms.dateAccepted2021-12-15
rioxxterms.versionofrecord10.1007/s10494-021-00315-5
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidCant, Stewart [0000-0003-1851-6665]
dc.identifier.eissn1573-1987
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/R029369/1)
cam.issuedOnline2021-12-29


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record