Whole Field Measurements on an Excited Premixed Flame Using On-Line PIV
A novel shear layer control technique used to enhance the mixing of heated jets has been the subject of study in our laboratory (Strykowski et al., 1993; 1996). The technique is based on the self excitation of a countercurrent shear layer which is established by the introduction of a reverse flow around the perimeter of an axisymmetric or rectangular jet. Because of its effectiveness, it is suggested that such an active shear layer control technique may also enhance the combustion processes in jet flames. To evaluate this hypothesis, an ON-LINE PIV system is used to characterize the velocity field, in both the cold reactant flow and the hot post-flame regions, of an excited, premixed jet flame issuing from a modified round nozzle burner.
Law, C. K. (1988). Dynamics of stretched flames. Twenty Second Symp. (Int.) on Comb.
The Combustion Institute, 1381.Google Scholar
Lewis, B. and von Elbe, G. (1961). Combustion, Flames and Explosions of Gases. Academic Press, New York.Google Scholar
Lourenco, L. and Krothapalli A., (1995). On the accuracy of velocity and vorticity measurements with PIV. Exp. in Fluids
, 421–428.ADSCrossRefGoogle Scholar
Mungal, M. G., Lourenco, L. and Krothapalli, A. (1995). Instantaneous velocity measurements in laminar and turbulent premixed flames using on-line PIV. Comb. Sci. and Tech.
, 239–265.CrossRefGoogle Scholar
Strykowski, P. J., Krothapalli, A. and Wishart D., (1993). Enhancement of mixing in high speed heated jets using a counterflowing nozzle. AAIA Journal
, 2033–2038.ADSCrossRefGoogle Scholar
Strykowski, P. J., Krothapalli, A. and Jendoubi, S., (1996). The effect of counterflow on the development of compressible shear layers. J. Fluid Mech.
, 63–96.ADSCrossRefMathSciNetGoogle Scholar
Strykowski, P. J., Niccum, D. L., (1991). The stability of countercurrent mixing layers in circular jets. J. Fluid Mech
, 309–343.ADSCrossRefGoogle Scholar
© Springer-Verlag Berlin Heidelberg 1997