Title :
Simultaneous reconstruction of flow and temperature cross-sections in gas jets using air-coupled tomography
Author :
Gan, T.H. ; Hutchins, D.A. ; Carpenter, P.W. ; Billson, D.R.
Author_Institution :
Sch. of Eng., Univ. of Warwick, Coventry, UK
Abstract :
This paper describes a technique whereby air-coupled ultrasonic techniques can be used to collect through-transmission data from gas jets. A transducer pair was scanned in two-dimensional section at an angle to the jet, and travel time and amplitude data recorded along various paths in counter-propagating directions. Suitable processing of the data, followed by tomographic reconstruction techniques, then allowed images to be formed of variations in either temperature or flow velocity. Results have been obtained using heated jets, where it has been shown that it is possible to separate the two variables successfully
Keywords :
acoustic tomography; flow measurement; jets; temperature distribution; temperature measurement; ultrasonic transducers; ultrasonic transmission; air-coupled tomography; air-coupled ultrasonic techniques; amplitude data; counter-propagating directions; flow; flow velocity; gas jets; heated jets; images; temperature cross-sections; through-transmission data; tomographic reconstruction techniques; transducer pair; travel time; two-dimensional section; Acoustic pulses; Data engineering; Fluid flow measurement; Gallium nitride; Image reconstruction; Pulse amplifiers; Temperature; Tomography; Ultrasonic transducers; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.991807
