EVALUATION OF FRACTAL DIMENSION FOR MIXING AND COMBUSTION BY THE SCHLIEREN METHOD

Authors
DAVIS MR LI HL
Citation
Mr. Davis et Hl. Li, EVALUATION OF FRACTAL DIMENSION FOR MIXING AND COMBUSTION BY THE SCHLIEREN METHOD, Experiments in fluids, 21(4), 1996, pp. 248-258
Citations number
39
Categorie Soggetti
Mechanics,"Engineering, Mechanical
Journal title
Experiments in fluids → ACNP
ISSN journal
07234864
Volume
21
Issue
4
Year of publication
1996
Pages
248 - 258
Database
ISI
SICI code
0723-4864(1996)21:4<248:EOFDFM>2.0.ZU;2-F
Abstract
The evaluation of fractal dimension values from schlieren flow images has been investigated. It was found for passive mixing heated jet flow s that a value of 2.31, close to that obtained by tomographic imaging, was obtained. For turbulent diffusion flames a value of 2.40 was obta ined, and this increased slightly with axial movement and with acousti c excitation of the flame. Broadly counteracting effects due to the tr ansverse differentiation and integration along the imaging beam inhere nt in the schlieren method was found to arise.