| Issue |
MATEC Web Conf.
Volume 369, 2022
40th Annual Conference - Meeting of the Departments of Fluid Mechanics and Thermomechanics in the connection with XXIII. International Scientific Conference - The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy (40th. MDFMT & XXIII. AEaNMiFMaE-2022)
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| Article Number | 05006 | |
| Number of page(s) | 10 | |
| Section | Visualization of Flow | |
| DOI | https://doi.org/10.1051/matecconf/202236905006 | |
| Published online | 04 November 2022 | |
Demonstration of Non-Uniformity of Velocity Profiles Using 2D PIV
TU Liberec, Faculty of Mechanical Engineering, Department of Power Engineering Equipment, Studentská 2, 46117, Liberec, Czech Republic
* Corresponding author: jaroslav.pulec@tul.cz
This paper deals with the demonstration of the non-uniformity of velocity profiles in a DN 200 air circular pipe as part of the development of a newly designed tomographic ultrasonic flowmeter. The flowmeter should measure the flow quality independently. Therefore, different aerodynamic conditions were created by placing mechanical obstacles at the entrance of the measuring chamber, and these conditions were experimentally verified. As an experimental channel substituting a section with ultrasonic sensors, a glass segment was placed at the inlet of a suction pipeline, in front of which perforated plates were inserted to break the uniformity of the velocity profile. The two-dimensional Particle Image Velocimetry (2D PIV) method was used to measure in a plane lying in the longitudinal axis of the channel. The experimental setup and PIV system parameters are described. The results are presented as velocity profiles and contour diagrams in cross-sections at different longitudinal positions in the channel. The results show that the requirement of non-uniformity is satisfied. The used disturbing plates disturb the axial symmetry of the profiles and create a backflow.
Key words: tomographic ultrasonic flowmeter / disturbing of flow / non-uniform profile / particle image velocimetry
© The Authors, published by EDP Sciences, 2022
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