Characteristics of laminar gas jet diffusion flames under the influence of elevated gravityLaminar gas jet diffusion flames of hydrogen, methane, ethane, and propane, stabilized on small cylindrical burners, were studied at elevated gravity in a centrifuge to investigate the role of buoyancy in such flames. Photographic observation of the hydrocarbon flames indicated that length and carbon luminosity decreased with increasing buoyancy. These flames eventually separated from the burner rim and finally extinguished as gravity increased. Hydrogen flames, however, did not separate or extinguish up to about 31 times earth normal gravity. Length data are reported and interpreted with the aid of a simplified model which describes the flame as a heated vertical cylindrical sheet to which oxygen is supplied by a free convection boundary layer.
Document ID
19770065370
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Altenkirch, R. A. (Kentucky Univ. Lexington, KY, United States)
Eichhorn, R. (Kentucky Univ. Lexington, KY, United States)
Hsu, N. N. (Kentucky Univ. Lexington, KY, United States)
Brancic, A. B. (Kentucky Univ. Lexington, KY, United States)
Cevallos, N. E. (Kentucky, University Lexington, Ky., United States)