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An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
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Note: "Lock-in accelerometry" to follow sink dynamics in shaken granular matter.
G Sánchez-Colina1, L Alonso-Llanes1, E Martínez1
1"Henri Poincarè" Group of Complex Systems, Physics Faculty, University of Havana, 10400 Havana, Cuba.
The Review of Scientific Instruments
|January 3, 2015
Summary
Researchers developed lock-in accelerometry to track intruder penetration in 3D granular beds. This method uses accelerometer correlations to quantify sink dynamics in opaque materials like sand.
Area of Science:
- Physics
- Geophysics
- Civil Engineering
Background:
- Penetration dynamics in granular beds are crucial for understanding geophysical processes and construction on granular soils.
- Tracking intruder movement in 3D granular beds is challenging due to material opacity, unlike 2D systems observable by video.
Purpose of the Study:
- To propose and validate a novel method for quantifying the sink dynamics of intruders in 3D granular beds.
- To overcome the limitations of visual tracking in opaque granular materials.
Main Methods:
- Developed 'lock-in accelerometry,' a technique measuring temporal correlations between accelerometers on a shaken granular bed and within an intruder.
- Analogous to lock-in amplifier principles, this method quantifies intruder penetration dynamics.
Main Results:
- Successfully quantified intruder sink dynamics in laterally shaken 3D granular beds.
- Demonstrated the efficacy of lock-in accelerometry for opaque granular materials.
Conclusions:
- Lock-in accelerometry provides a robust method for studying intruder penetration in 3D granular systems.
- This technique has significant implications for fundamental physics, geophysics, and geotechnical engineering applications.
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