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Updated: Feb 7, 2026
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A Microfluidic-based Hydrodynamic Trap for Single Particles
Published on: January 21, 2011
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Hydrodynamics of granular particles on a line
Andrea Baldassarri1, Andrea Puglisi1, Antonio Prados2
1Istituto dei Sistemi Complessi - CNR and Dipartimento di Fisica, Università di Roma Sapienza, Piazzale Aldo Moro 2, 00185 Rome, Italy.
Physical Review. E
|July 18, 2018
Summary
We studied a granular gas model in a thin channel, finding a steady uniform longitudinal flow (ULF) state. This state, observed in simulations, is achieved by maintaining consistent boundary temperatures.
Area of Science:
- Physics
- Soft Matter
- Statistical Mechanics
Background:
- Granular materials exhibit complex behaviors distinct from molecular gases.
- Hydrodynamic descriptions are crucial for understanding large-scale granular flow dynamics.
Purpose of the Study:
- To derive and verify the hydrodynamic description of a granular gas in a confined channel.
- To investigate the existence and conditions for a uniform longitudinal flow (ULF) state.
Main Methods:
- Lattice model simulation of granular gas dynamics.
- Derivation of hydrodynamic equations from microscopic dynamics.
- Analysis of finite-size corrections.
Main Results:
- The hydrodynamic description predicts a steady uniform longitudinal flow (ULF) state.
- Numerical simulations confirm the ULF state in finite systems with identical boundary thermostats.
- The study discusses the relationship between ULF and shock phenomena in cooling granular gases.
Conclusions:
- A granular gas in a thin channel can exhibit a stable uniform longitudinal flow.
- Boundary conditions and finite-size effects significantly influence the observed flow states.
- The findings contribute to understanding non-equilibrium statistical mechanics in granular systems.
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