Temperature distribution and wind vector measurement using ultrasonic CT based on time of flight detection

In this report, a measurement method for cross-sectional temperature and wind velocity distribution is treated.@ A novel method based on acoustic CT technique is proposed, and the temperature and the wind velocity distributions are estimated simultaneously by using time of flight data on several ultrasonic propagation paths. @The temperature and the wind velocity effects can be distinguished by considering sum and difference of the time of flight data, and two kinds of projection data; temperature oriented and wind velocity oriented components are obtained. @Filtered back projection method and inverse matrix method are applied to reconstruct the temperature and the wind velocity distributions, respectively.@Experimental system is designed and fabricated to realize the simultaneous temperature and wind velocity distribution measurement.@ As a result, effectiveness of the proposed measurement method is confirmed.