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Title: Flame surface density and burning rate in premixed turbulent flames

The flame surface density has been measured in hydrocarbon/air stagnation point and v-shaped premixed turbulent flames. A method is proposed to determine the flame surface density from the data obtained by laser sheet tomography. The average flame length and flame zone area as a function of the progress variable are calculated from a map of progress variable and a set of flame edges obtained from the tomographs. From these results a surface density estimate in two dimensions is determined. By this technique it is possible to avoid the difficulties which arise when using an algebraic model based on the measurement of the flame front geometry and a scalar length scale. From these results the burning rate can be obtained which compares well with estimates calculated using the fractal technique. The present method, however, is not constrained by a minimum window size as is the case for the fractal determinations.
Authors:
 [1]
  1. Lawrence Berkeley National Lab., CA (United States). Energy and Environment Div.
Publication Date:
OSTI Identifier:
132644
Report Number(s):
LBL--37834; CONF-9510145--2
ON: DE96002278; TRN: AHC29529%%5
DOE Contract Number:
AC03-76SF00098
Resource Type:
Technical Report
Resource Relation:
Conference: Fall meeting of the Western States Section of the Combustion Institute, Stanford, CA (United States), 30-31 Oct 1995; Other Information: PBD: Oct 1995
Research Org:
Lawrence Berkeley Lab., CA (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; 03 NATURAL GAS; FLAMES; PHYSICAL PROPERTIES; METHANE; COMBUSTION KINETICS; TURBULENT FLOW; MATHEMATICAL MODELS; SPATIAL DISTRIBUTION; TWO-DIMENSIONAL CALCULATIONS; EXPERIMENTAL DATA