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Updated: Jan 26, 2026
10:53
Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
Published on: March 12, 2019
7.5K
PIV measurements of the SimInhale benchmark case
T Janke1, P Koullapis2, S C Kassinos2
1Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Freiberg, Germany.
Summary
Particle Image Velocimetry (PIV) experiments provide benchmark data for SimInhale. PIV results show Reynolds number independence and agree well with Large Eddy Simulations (LES).
Area of Science:
- Fluid Dynamics
- Experimental Fluid Mechanics
- Computational Fluid Dynamics
Background:
- The SimInhale benchmark case requires validated experimental data.
- Accurate flow field characterization is crucial for inhalation device design.
Purpose of the Study:
- To perform Particle Image Velocimetry (PIV) measurements for the SimInhale benchmark.
- To generate experimental data for validation of simulation models.
- To investigate airflow dynamics in a transparent model.
Main Methods:
- Utilized a refractive index matched, transparent model of the benchmark geometry.
- Conducted PIV measurements at various flow rates (15, 30, 60 L/min, Re ≈ 1000-4500).
- Compared experimental PIV data with Large Eddy Simulation (LES) results.
Main Results:
- Qualitative velocity fields demonstrated Reynolds number independence within the tested range.
- PIV and LES data showed good agreement.
- LES slightly over-predicted turbulent kinetic energies compared to PIV.
Conclusions:
- The study provides valuable experimental data for the SimInhale benchmark.
- PIV measurements validate LES predictions for this flow regime.
- Data will be publicly accessible via the ERCOFTAC database.
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