- Author
-
Ang, J. A.
|
Pagni, P. J.
|
Mataga, T. G.
|
Margle, J. M.
|
Lyons, V. J.
- Title
- Temperature and Velocity Profiles in Sooting Free Boundary Layer Flames.
- Coporate
- California Univ., Berkeley
National Aeronautics and Space Admin., Cleveland, OH
- Sponsor
- National Institute of Standards and Technology, Gaithersburg
National Science Foundation, Washington, DC
- Report
-
AIAA-86-0575,
- Contract
- NBS-GRANT-60NANB5D0552
- Book or Conf
- American Institute of Aeronautics and Astronautics. Aerospace Sciences Meeting, 24th. January 6-9, 1986,
Reno, NV,
9 p.,
1986
- Keywords
-
diffusion flames
|
temperature
- Abstract
- Temperature and velocity profiles are presented for cyclohexane, n-heptane and isooctane free, laminar, boundary layer, sooting, diffusion flames. Temperatures are measured with 3 mil Pt/Pt-13%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 theory from observation partially due to the small fluctuations inherent in these free flows.