Local Reaction Zone Thickness of Non-Premixed Flames of Propane with Highly Preheated Low-Oxygen Concentration Air
نویسندگان
چکیده
منابع مشابه
Electrical control of the thermodiffusive instability in premixed propane–air flames
This work focuses upon the effects of DC electric fields on the stability of downward propagating atmospheric pressure premixed propane–air flames under experimental conditions that provide close coupling of the electric field to the flame. With the appropriate electrode geometry, modest applied voltages are shown to drive a stable conical flame first into a wrinkled-laminar flamelet geometry, ...
متن کاملReaction-Sheet Jump Conditions in Premixed Flames
The fundamental differences between the leading-order jump conditions, often assumed at a flame sheet in combustion theory, and the actual effect of a chemical reaction that satisfies Arrhenius kinetics with a finite activation temperature, need to be understood. These differences are “higher order” in terms of a large activation temperature analysis. However, they do provide a quantitative est...
متن کاملPremixed flames with a reversible reaction: propagation and stability
We consider the effect of the reversibility of the chemical reaction on the propagation and stability of laminar premixed flames, an important realistic aspect which has received little attention in the literature. For the sake of analytical tractability and clarity of the results, the thermodiffusive approximation of constant density is adopted, along with the simple framework of a single reve...
متن کاملPropagation of Non-stationary Curved and Stretched Premixed Flames with Multi-step Reaction Mechanisms
The propagation speed of a thin premixed flame disturbed by an unsteady fluid flow of a larger scale is considered. The flame may also have a general shape but the reaction zone is assumed to be thin compared to the flame thickness. Unlike in preceding publications, the presented asymptotic analysis is performed for a general, multi-step reaction mechanism and, at the same time, the flame front...
متن کاملStructure and Extinction of Heptane/Air Partially Premixed Flames
A numerical investigation of the structure and extinction of n-heptane/air partially premixed ames in a counter ow con guration is reported. The ame is computed using a detailed reaction mechanism consisting of 275 elementary reactions and 41 species. The mechanism is validated by comparing its predictions with measurements for both the premixed and nonpremixed ames. The partially premi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
سال: 2006
ISSN: 0387-5016,1884-8346
DOI: 10.1299/kikaib.72.1349