Demonstration of Non-Uniformity of Velocity Profiles Using 2D PIV

This paper deals with the demonstration of non-uniformity velocity profiles in a DN 200 air circular pipe as part development newly designed tomographic ultrasonic flowmeter. The flowmeter should measure flow quality independently. Therefore, different aerodynamic conditions were created by placing mechanical obstacles at entrance measuring chamber, and these experimentally verified. As an experimental channel substituting section sensors, glass segment was placed inlet suction pipeline, front which perforated plates inserted to break uniformity profile. two-dimensional Particle Image Velocimetry (2D PIV) method used plane lying longitudinal axis channel. setup PIV system parameters are described. results presented contour diagrams cross-sections positions show that requirement is satisfied. disturbing disturb axial symmetry create backflow.