An asymptotic analysis involving the limit of large activation energy is presented for the study of thermal and chemical inhibition effects on premixed flames by heterogeneous flame suppressants. A formulation analogous to that for heterogeneous laminar flame is employed for evaluating the thermal e
A theoretical study of the effects of chemical kinetics on a one-dimensional diffusion flame
โ Scribed by D.B. Spalding; V.K. Jain
- Publisher
- Elsevier Science
- Year
- 1962
- Tongue
- English
- Weight
- 586 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0010-2180
No coin nor oath required. For personal study only.
โฆ Synopsis
The present paper considers the effects of chemical kinetzcs on a one-dimensional diffusion flame. A mathematical treatment which takes the ]uel fraction as the independent variable is presented and numerical solutions are obtained lor a particular idealized hydrocarbon-air diffusion flame. It is shown that, at the extinction point of the particular diffusion flame considered, the fuel-consumption rate per unit area is 0.89 times the fuel-consumption rate per unit area in a premixed stoichiometric flame; at higher ]uel flow rates the flame is extinguished.
It is also shown that, even before extinction, some 1uel escapes unburnt through the diffusion flame of the type considered.
๐ SIMILAR VOLUMES
An experimental study was conducted to investigate the effects of axial forcing on the flow structures near the nozzle exit in coaxial isothermal jets and jet diffusion flames. The jet was excited by adding a periodic velocity fluctuation ranging from 0 to 400% of the mean jet velocity at the tube r
Shorter Commumcations 143 aggregatrve behavtour, but m the present work particulate flm&satlon was obtamed over the whole range of votdages The techmque wdl now be used to permtt a more extensive study of segregation and pressure fluctuations. together with the effect on heat transfer to small imme