Related Experiment Video
Updated: Jun 6, 2025
13:02
Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
Published on: February 27, 2016
12.2K
Second order and transverse flow visualization through three-dimensional particle image velocimetry in millimetric
N C Harte1,2, D Obrist2, M Versluis3
1Department of Otorhinolaryngology, TUM School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
Experimental Thermal and Fluid Science
|December 2, 2024
Summary
This study introduces a scanning 3D particle image velocimetry (PIV) system for precise measurement of small-scale oscillatory flows. The novel system accurately captures transverse flow dynamics, crucial for complex microfluidic applications.
Area of Science:
- Fluid dynamics
- Experimental fluid mechanics
- Microfluidics
Background:
- Measuring small-scale 3D flows, especially with large dynamic ranges, remains a challenge.
- Existing 3D particle image velocimetry (PIV) techniques have limitations in resolving subtle flow components.
Purpose of the Study:
- To develop and validate a scanning 3D-PIV system for oscillatory flows.
- To accurately measure transverse flow components in micro-scale geometries.
- To enable detailed analysis of complex, multi-physics systems at microscopic scales.
Main Methods:
- Implementation of a scanning 3D-PIV system tailored for oscillatory flows.
- Application of stroboscopic and semi-Lagrangian PIV analysis techniques.
- Experimental validation against computational fluid dynamics (CFD) simulations.
Main Results:
- The system successfully resolved transverse flows less than 1% of the axial flow amplitude.
- Detailed visualization of transverse flows in straight, toroidal, and twisted millimetric ducts was achieved.
- Experimental data showed close agreement with CFD simulations.
Conclusions:
- The developed scanning 3D-PIV method offers high precision for studying periodic flows at microscopic scales.
- This technique is suitable for applications where physical scaling is not feasible.
- It advances the capability to examine complex, multi-physics phenomena in microfluidic systems.
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