Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/59462
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dc.contributor.author | Mi, J. | - |
dc.contributor.author | Feng, B. | - |
dc.contributor.author | Deo, R. | - |
dc.contributor.author | Nathan, G. | - |
dc.date.issued | 2009 | - |
dc.identifier.citation | Acta Physica Sinica, 2009; 58(11):7756-7764 | - |
dc.identifier.issn | 1000-3290 | - |
dc.identifier.issn | 1000-3290 | - |
dc.identifier.uri | http://hdl.handle.net/2440/59462 | - |
dc.description.abstract | We investigated in experiment the effect of exit Reynolds number on self-preservation of a turbulent plane jet. Centerline velocity statistics were measured in plane jets issuing from the same nozzle but, respectively, with seven Reynolds numbers varying between Re=4,582 and Re=57,735, where Re≡Ujh/ν (Uj being the momentum-averaged exit mean velocity, h the slot height and ν the kinematic viscosity). All measurements were conducted using single hot-wire anemometry and over an axial distance (x) of 40 h. These measurements revealed a significant Re-dependence of either the mean or turbulent flow field. As Re increases, the pace of the jet development decreases and, as a result, both the mean and turbulent properties reach their self-preserving states over a longer downstream distance (x). The centerline integral scale L for all jets grows linearly with x and the growth rate decreases as Re is increased. It is also found that the local Reynolds number ReL scales with x as ReL∝x1/2. The study suggests that differences of the self-preserving states observed may be related to the differences in the underlying turbulence structures in the near field of the seven jets. | - |
dc.description.statementofresponsibility | Mi, Jianchun; Feng, Bao-Ping; Deo, Ravinesh C. and Nathan, Graham J. | - |
dc.language.iso | en | - |
dc.publisher | Chinese Physical Soc | - |
dc.rights | Copyright 2009 Chinese Physical Society | - |
dc.source.uri | http://eprints.usq.edu.au/7438/ | - |
dc.subject | plane jet | - |
dc.subject | Reynolds number | - |
dc.subject | self-preservation | - |
dc.title | Effect of exit Reynolds number on self-preservation of a plane jet | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.7498/aps.58.7756 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Nathan, G. [0000-0002-6922-848X] | - |
Appears in Collections: | Aurora harvest Environment Institute Leaders publications Mechanical Engineering publications |
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