Flame propagation in a nonuniform mixture: Analysis of a slowly varying Triple Flame
For flames propagating through a nonuniform medium a three-flame structure is described. This consists of a fuel-rich premixed flame, a fuel-lean premixed flame, and, starting where these flames meet, a diffusion flame. Such formations have been observed experimentally and probably occur as laminar...
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| Veröffentlicht in: | Combustion and flame 1989-04, Vol.76 (1), p.71-88 |
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| container_title | Combustion and flame |
| container_volume | 76 |
| creator | Dold, J.W. |
| description | For flames propagating through a nonuniform medium a three-flame structure is described. This consists of a fuel-rich premixed flame, a fuel-lean premixed flame, and, starting where these flames meet, a diffusion flame. Such formations have been observed experimentally and probably occur as laminar flamelets in turbulent diffusion flames. A low-heat-release model for such flame structures is developed and solutions are obtained in the limit of slowly varying premixed flames. Under these conditions, it is shown that the Triple-Flame propagation speed depends on the transverse mixture fraction gradient and is bounded above by the maximum adiabatic laminar flame speed of the system. |
| doi_str_mv | 10.1016/0010-2180(89)90079-5 |
| format | Article |
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This consists of a fuel-rich premixed flame, a fuel-lean premixed flame, and, starting where these flames meet, a diffusion flame. Such formations have been observed experimentally and probably occur as laminar flamelets in turbulent diffusion flames. A low-heat-release model for such flame structures is developed and solutions are obtained in the limit of slowly varying premixed flames. Under these conditions, it is shown that the Triple-Flame propagation speed depends on the transverse mixture fraction gradient and is bounded above by the maximum adiabatic laminar flame speed of the system.</abstract><pub>Elsevier Inc</pub><doi>10.1016/0010-2180(89)90079-5</doi><tpages>18</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Combustion and flame, 1989-04, Vol.76 (1), p.71-88 |
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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| title | Flame propagation in a nonuniform mixture: Analysis of a slowly varying Triple Flame |
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