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Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
Published on: March 12, 2019
Spatially resolved flow velocity measurements using laser-induced fluorescence from a pulsed laser
Optics Letters
|September 15, 2009
Summary
This study introduces a novel laser technique for single-shot, spatially resolved velocity measurements. The method uses laser-induced fluorescence of iodine (I2) for precise flow analysis.
Area of Science:
- Fluid dynamics
- Laser spectroscopy
- Physical chemistry
Background:
- Accurate velocity measurements are crucial for understanding fluid flow dynamics.
- Existing methods may lack spatial or temporal resolution for certain applications.
Purpose of the Study:
- To develop a method for acquiring spatially resolved velocity measurements.
- To demonstrate the potential for single-shot measurements using a specific laser setup.
Main Methods:
- Utilized a pulse-amplified, single-mode continuous-wave (cw) laser.
- Tuned the laser to the maximum slope of the Doppler-broadened absorption profile of iodine (I2).
- Split the laser beam into counterpropagating components and detected laser-induced fluorescence.
Main Results:
- Achieved spatially resolved velocity measurements.
- Demonstrated the capability for single-shot measurement acquisition.
- Successfully used iodine seeding for flow diagnostics.
Conclusions:
- The described laser technique enables precise, spatially resolved velocity measurements.
- The method shows promise for high-temporal-resolution flow analysis, including single-shot capabilities.
