TY - JOUR
T1 - Interaction of Jet Diffusion Flamelets with Grid-generated Co-flow Turbulence
AU - Ueda, Toshihisa
AU - Cheng, Robert K.
N1 - Funding Information:
of Dr I. G. Shepherd and Dr P. J. Goix. The work at LBL was supported by the Director. Office of Energy Research. Office of Basic Energy Sciences. Chemical Sciences Division of the U.S. Department of Energy under Contract No. DE-AC-03-76SF0009~.
Funding Information:
The sabbatical leave or one or the authors (TU) at LBL was supported by Princeton University. The authors would like to express their gratitude to Prof. C. K. Law for his generosity in making this collaboration possible. The authors would also like to acknowledge the useful comments and discussions
PY - 1991/11/1
Y1 - 1991/11/1
N2 - The flame front dynamics of a hydrogen jet diffusion flame interacting with co-flow grid-turbulence have been investigated using the laser induced Mie Scattering from Oil Droplets (MSOD) technique. The flame influence on the velocity field was also determined by two-component LDA. The experimental conditions were designed to minimize the generation of shear turbulence between the fuel and air flows. Both single point statistical data and tomographic high speed movies of MSOD were obtained. As shown by the tomographic movies, the flamelets are characterized by wrinkles comparable to the size of the turbulence integral scale. The probability density functions of the single point data show the intermittent nature of the flamelets. The velocity fluctuations, however. were not influenced by the flamelet fluctuation. The shear layer formed between the co-flow and room air is found to have influenced the flamelet dynamics and the velocity fluctuations at positions away from the jet exit.
AB - The flame front dynamics of a hydrogen jet diffusion flame interacting with co-flow grid-turbulence have been investigated using the laser induced Mie Scattering from Oil Droplets (MSOD) technique. The flame influence on the velocity field was also determined by two-component LDA. The experimental conditions were designed to minimize the generation of shear turbulence between the fuel and air flows. Both single point statistical data and tomographic high speed movies of MSOD were obtained. As shown by the tomographic movies, the flamelets are characterized by wrinkles comparable to the size of the turbulence integral scale. The probability density functions of the single point data show the intermittent nature of the flamelets. The velocity fluctuations, however. were not influenced by the flamelet fluctuation. The shear layer formed between the co-flow and room air is found to have influenced the flamelet dynamics and the velocity fluctuations at positions away from the jet exit.
UR - http://www.scopus.com/inward/record.url?scp=84953461520&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84953461520&partnerID=8YFLogxK
U2 - 10.1080/00102209108951780
DO - 10.1080/00102209108951780
M3 - Article
AN - SCOPUS:84953461520
SN - 0010-2202
VL - 80
SP - 121
EP - 135
JO - Combustion science and technology
JF - Combustion science and technology
IS - 1-3
ER -