Burning Velocities of Various Premixed Turbulent Propane Flames on Open Burners Page: 2 of 33
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NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS
TECH LIBRARY KAFB, NM
11 11111 II
TECHNICAL NOTE 3575
BURNING VELOCITIES COF VARIOUS PREMIXED TURBULENT
PROPANE FLAMES ON OPEN BURNERS
By Paul Wagner
Turbulent burning velocities for premixed propane flames were meas-
ured at room temperature and at atmospheric pressure. The turbulent-
burning-velocity measurements were made for systems of various laminar
burning velocities, densities, and viscosities. These properties were
varied by (1) replacing the nitrogen of the air with argon or helium,
and (2) varying the oxygen concentrations in the propane-oxygen-nitrogen
mixtures. Each set of turbulent-burning-velocity data was taken in a
variety of burner sizes and over a velocity range.
The experimental data were correlated by a function of the form
where U and UL are turbulent and laminar burning velocities, respec-
tively, Re is Reynolds number, and the exponent a was different for
systems having various diluents (i.e., nitrogen, argon, and helium).
Measurements were made of the axial fluctuating-velocity component
of the turbulent stream issuing from the burner port. The intensity of
turbulence appeared to be dependent upon the nature of the diluent. Con-
sideration of the data in terms of the measured turbulence parameters was
a small over-all improvement. However, this change was in the direction
of better correlation.
The followi-ng symbols are used in this report:
burner inside diameter, cm
mean flame height, cm
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Wagner, Paul. Burning Velocities of Various Premixed Turbulent Propane Flames on Open Burners, report, October 1955; (digital.library.unt.edu/ark:/67531/metadc57887/m1/2/: accessed February 16, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.