Patent ID: 6067861
Filing Date: 2000-05-30
Classification: G01F,G01N

Abstract:
A method of measuring a velocity profile of a fluid flow having an ultrasonic scatterer, the method comprising the steps of:(a) providing at least one pair of ultrasonic transducers surrounding said fluid flow;(b) measuring a time of flight between said at least one pair of ultrasonic transducers;(c) measuring a reflection mode pulsed wideband Doppler between at least one transducer of said at least one pair of ultrasonic tranducers and said ultrasonic scatterer;(d) mathematically reconstructing a local speed of sound across a flow section from the time of flight; and(e) mathematically reconstructing a local fluid velocity from a combination of the local speed of sound and the reflection mode pulsed wideband Doppler, thereby obtaining the velocity profile.