Characteristics of the flow field and of impingement surface heat transfer for round, turbulent jets were studied experimentally. / The effects on the flow field and heat transfer of nozzle geometry, i.e. nozzle length, l(,n)/d(,n), and nozzle entrance configuration (contoured and sharp-edged), and semi-confinement were investigated. In addition, the role of suction on the development of flow was considered. / Effects of nozzle geometry on the flow field and on heat transfer are to divide the nozzles tested into two groups; the long (10 (LESSTHEQ) l(,n)/d(,n) (LESSTHEQ) 50) nozzles with similar characteristics and modest differences between them, and the short (l(,n)/d(,n) = 1) nozzles with distinctly different patterns for flow and heat transfer. / Semi-confinement restricts interaction and mixing between the jet and the ambient fluid and hence reduces entrainment, and causes significant reductions in local heat transfer coefficients over most of the impingement surface. / In general, application of suction up to V(,w) = 0.25 m/s or 0.42% of the nozzle exit average velocity reduces the boundary layer thickness, increases radial velocities adjacent to the impingement surface, thereby velocity gradients near the wall.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.77079 |
| Date | January 1980 |
| Creators | Obot, Nsima Tom. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Chemical Engineering) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000127583, proquestno: AAINK52056, Theses scanned by UMI/ProQuest. |
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