Measurement of flame speeds by a nozzle burner method

Abstract

The literature records a great many meas urements, using stationary flames on burners of the speed with which flame moves through combustible mixtures of gases. D espite th~ fact that the method itself seems reasonably simple, the results obtained by various invcsti-gato:s often are not in good agreement. One of the phases of a program of research on combustIOn has been a study of some of the r easons for the differences among recorded values of flame speed measured by the burner method. The primary objective of this task has been to develop the precautions t hat should be observed in applying t he method, rather than to e volve numerical values of flame speed. This paper describes progress that has been made since the apparatus was described originally in 1951, and presents val ues of flame speeds of methane-air mixtures obtained s ince then, together with comparisons of these val ues with those obtained by two flame theories.