Title :
Air-coupled ultrasonic tomographic imaging of high-temperature flames
Author :
Gan, Tat Hean ; Hutchins, David A.
Author_Institution :
Sch. of Eng., Warwick Univ., UK
Abstract :
This paper illustrates the use of air-coupled ultrasonic tomography for the measurement of a highs temperature flame from a natural gas burner, using capacitive ultrasonic transducers in through transmission. This uses a transducer pair, which is scanned in two-dimensional sections at several angles to the jet axis. Travel-time data then is recorded along various paths in counter-propagating directions. By processing the data obtained from propagation times, images have been formed of variations in temperature within the flame, using the tomographic reconstruction approach.
Keywords :
acoustic tomography; capacitive sensors; flames; temperature distribution; temperature measurement; ultrasonic imaging; ultrasonic measurement; ultrasonic transducers; US imaging; air-coupled ultrasonic tomographic imaging; capacitive US transducers; high-temperature flames; natural gas burner; tomographic reconstruction approach; transducer pair; travel-time data; Fires; Optical films; Optical filters; Optical receivers; Optical transmitters; Temperature; Tomography; Ultrasonic imaging; Ultrasonic transducers; Ultrasonic variables measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2003.1235334
