Three-dimensional Visualization of Diffusion Flame Shapes under Acoustic Excitation Using Stereoscopic Imaging and Reconstruction Technique

Article type: Research Article

Authors: Ng, W.B. | Salem, A.F. | Zhang, Y.

Affiliations: Mechanical, Aerospace and Manufacturing Engineering Department, PO Box 88, University of Manchester Institute of Science and Technology, Manchester M60 1QD, United Kingdom. E-mail: wen.ng@umist.ac.uk | Mechanical, Aerospace and Manufacturing Engineering Department, PO Box 88, University of Manchester Institute of Science and Technology, Manchester M60 1QD, United Kingdom. E-mail: yz100@umist.ac.uk

Abstract: Stereoscopic imaging and reconstruction technique is introduced to reconstruct the flame structures that are subject to acoustic excitation. The laminar diffusion flame under investigation was created in a cylindrical tube and excited by a loudspeaker. Stereo images were taken at a shutter speed of 1/10000 th second using a 'stereo camera' and the depth cue of the flame structures along the camera viewing direction were then computed using machine vision methodology. By visualizing the computed three-dimensional flame models, as well as judging the corresponding attribute such as surface gradient, the understanding of the flame and acoustic wave interaction could be improved.

Keywords: Three-dimensional Visualization, Acoustic Excitation, Laminar Diffusion Flame, Stereoscopic Imaging

Journal: Journal of Visualization, vol. 6, no. 4, pp. 329-336, 2003