Except for some specially-created laboratory-scale flames (e. g. flames stabilized over a flat flame burner or a two-dimensional slot burner), flames are invariably under the influence of stretch. Since stretch can significantly affect the flame behavior, failure to account for its effects can lead to quantitative as well as qualitative errors in the study of fundamental flame phenomena and also in combustor modeling. An important application of the study of stretched flames is turbulent combustion. It is generally accepted that except for the very small scale eddies, a turbulent flame can be modeled as wrinkled laminar flames because the characteristic reaction zone thickness is smaller than the characteristic eddy sizes. These wrinkled laminar flamelets are curved and situated in a highly nonuniform and fluctuating flow field. Thus they are highly stretched flames and should be treated as such. The same applies to the study of large coherent structures in turbulent flames.
|Original language||English (US)|
|Pages (from-to)||C. 1-C. 11|
|Journal||Chemical and Physical Processes in Combustion, Fall Technical Meeting, The Eastern States Section|
|State||Published - 1984|
All Science Journal Classification (ASJC) codes
- Fuel Technology