Kurdyumov, V. and Fernández Tarrazo, Eduardo and Liñán Martínez, Amable (2002) The anchoring of gaseous jet diffusion flames in stagnant air. Aerospace Science and Technology, 6 (7). pp. 507-516. ISSN 1270-9638
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| Item Type: | Article | ||||||||
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| Title: | The anchoring of gaseous jet diffusion flames in stagnant air | ||||||||
| Journal/Publication Title: | Aerospace Science and Technology | ||||||||
| Date: | November 2002 | ||||||||
| Volume: | 6 | ||||||||
| Number: | 7 | ||||||||
| Department: | Motopropulsión and thermofluidynamic | ||||||||
| Faculty: | E.T.S.I. Aeronautical (UPM) | ||||||||
| Creative Commons licenses: | Recognition - No derivative works - No commercial | ||||||||
| Item ID: | 912 | ||||||||
| Subjects: | Chemistry Mathematics Physics |
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Official URL: http://www.sciencedirect.com/science/journal/12709638
Abstract
A numerical analysis is presented to describe the structure of the attachment region of gaseous jet diffusion flames in stagnant air. For the typical Reynolds numbers encountered in applications, the region of flame attachment, in the near wake at the injector rim, is small compared with the injector radius. The local flow, which we consider to be laminar, quasi-steady and two-dimensional, is determined by the wall value of the fuel stream velocity gradient and the chemical reaction time or residence time in the premixed flame of a stoichiometric mixture of the fuel stream and required amount of air. When the Karlovitz number, or product of the velocity gradient and the flame residence time, grows above a critical value the flame is lifted off the injector.
| Item Type: | Article |
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| Uncontrolled Keywords: | chemically reactive flow; flames; flow simulation; jets; laminar flow; laminar to turbulent transitions; organic compounds; stagnation flow; turbulent diffusion; wakes; gaseous jet diffusion flames; stagnant air; Reynolds numbers; flame attachment; near wake; injector rim; local flow; laminar quasisteady two dimensional flow; fuel stream velocity gradient; chemical reaction time; residence time; premixed flame; stoichiometric mixture; Karlovitz number; velocity gradient; methane flame; |
| Subjects: | Chemistry Mathematics Physics |
| Código ID: | 912 |
| Depositado Por: | Archivo Digital UPM |
| Depositado el: | 13 Mar 2008 |
| Last Modified: | 23 Sep 2009 18:40 |
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