APPARATUS AND METHOD FOR ATTENUATING ACOUSTIC WAVES IN PROPAGATING WITHIN A PIPE WALL

摘要

A method and apparatus for damping an ultrasonic signal propagating in the wall of a pipe (104), the apparatus including at least one damping structure (132) for securing at least one sensor to the wall of the pipe, wherein the at least one sensor includes a transmitter component (122) and a receiver component (124) for transmitting and receiving an ultrasonic signal, wherein the at least one damping structure is associated with the outer wall of the pipe for damping the ultrasonic signal propagating within the wall of the pipe and a processor that defines a convective ridge in the k-omega plane in response to the ultrasonic signals, and determines the slope of at least a portion of the convective ridge to determine the flow velocity of the fluid.