Main effects on the accuracy of Pulsed-Ultrasound-Doppler-Velocimetry in the presence of rigid impermeable walls

Walls bounding the flow applications under consideration influence the accuracy of Pulsed-Ultrasound-Doppler-Velocimetry (PUDV) by changing the shape of the acoustic beam, the propagation of the ultrasonic burst and the intensity distribution of the returning echo. Based on measurements of the acoustic beam shape and echo intensity distribution, the main effects on the accuracy of PUDV are identified and analyzed in the presence of rigid impermeable walls. Reviewing the main effects of (i) system control parameters and (ii) beam propagation on the accuracy of velocity field measurements using PUDV, we focus on investigating the main effects of (iii) shape of the beam and (iv) echo intensity. Finally, the main effects on the accuracy of PUDV in the presence of rigid impermeable walls are discussed and summarized.