METHOD FOR ULTRASONIC FLOW VECTOR MEASUREMENT

Abstract

A new method (Ultrasonic Computed Velocimetry) to measure complete vector components of flow velocity is proposed. Using this method, it is possible to measure both of the flow velocity components along and transverse to the beam axis. This method is able to simultaneously measure the signs andmagnitude of the flow velocity components. Reflected ultrasound waves are used togetherwith fully linear signal processing procedures. The first step of the method is Fourier transformation of the received signals in the direction of the transducer array. The second step is also a Fourier transformation but in the polar axis directions. These two steps provide the two velocity compoments along and transverse to the beam axis. Detailed procedure and result of numerical simulation are presented.