Temperature and velocity profiles in sooting free boundary layer flamesTemperature and velocity profiles are presented for cyclohexane, n-heptane, and iso-octane free, laminar, boundary layer, sooting, diffusion flames. Temperatures are measured with 3 mil Pt/Pt-13 percent Rh thermocouples. Corrected gas temperatures are derived by performing an energy balance of convection to and radiation from the thermocouple bead incorporating the variation of air conductivity and platinum emissivity with temperature. Velocities are measured using laser doppler velocimetry techniques. Profiles are compared with previously reported analytic temperature and velocity fields. Comparison of theoretical and experimental temperature profiles suggests improvement in the analytical treatment is needed, which accounts more accurately for the local soot radiation. The velocity profiles are in good agreement, with the departure of the theory from observation partially due to the small fluctuations inherent in these free flows.
Document ID
19860035224
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ang, J. A. (California Univ. Berkeley, CA, United States)
Pagni, P. J. (California Univ. Berkeley, CA, United States)
Mataga, T. G. (California, University Berkeley, United States)
Margle, J. M. (California Univ. Berkeley, CA, United States)
Lyons, V. J. (NASA Lewis Research Center Cleveland, OH, United States)