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 1/10000th 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.
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Wen B. Ng: He received his 1st class BEng degree in Mechanical Engineering from UMIST in 1999. Currently, he is at his Ph.D. writing-up stage in the same university. He is partly sponsored by ALSTOM POWER, Rolls-Royce Plc, British Government and UMIST. His research is mainly focused on stereoscopic methodology of flame dynamics and combustion instability study in gas turbine combustor.
Salem A. Farhat: He received his BSc degree in Mechanical Engineering from Al-Fateh University in Libya (1986). After that, he received M.Sc. degree from Warsaw University in Poland (1996) in the field of Mechanical Engineering and became a lecturer in Al-Fateh University until 2000. Currently, he is studying in UMIST for a Ph.D. degree in the area of combustion instability.
Yang Zhang: He received his B.Eng. degree in Cryogenic Engineering from Zhejiang University, China and his Ph.D. in combustion from Cambridge University, England. He worked in No. 585 Research Institute, China, and studied English in Shanghai Foreign Language Institute before starting his Ph.D., which was in the area of experimental combustion and under the supervision of Prof. K N C Bray, FRS. After his Ph.D. he continued his research in Cambridge University before taking up his current position as a lecturer and then senior lecturer at UMIST. His research interests include the experimental and computational studies of reacting flows, experimental diagnostic techniques such as PIV, high-speed imaging, stereoscopic imaging and computing, signal processing and flame pattern recognition.
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Ng, W.B., Salem, A.F. & Zhang, Y. Three-dimensional visualization of diffusion flame shapes under acoustic excitation using stereoscopic imaging and reconstruction technique. J Vis 6, 329–336 (2003). https://doi.org/10.1007/BF03181739
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DOI: https://doi.org/10.1007/BF03181739