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Fragmenting Bulk Hydrogels and Processing into Granular Hydrogels for Biomedical Applications
Published on: May 17, 2022
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Inclined granular flow in a narrow chute
Sheng Zhang1, Guanghui Yang1, Ping Lin1
1Institute of Modern Physics, Nanchang Rd. 509, 730000, Lanzhou, China.
The European Physical Journal. E, Soft Matter
|March 31, 2019
Summary
This study simulates granular flow down chutes, revealing four flow regimes influenced by sidewalls. Sidewall effects significantly alter flow behavior compared to simulations without boundaries.
Area of Science:
- Physics
- Engineering
- Computational Science
Background:
- Granular flow dynamics are crucial in various industrial and natural processes.
- Understanding the influence of boundaries, like sidewalls, is essential for accurate modeling.
Purpose of the Study:
- To detail granular flow down a narrow chute using discrete element method (DEM) simulations.
- To investigate the significant influence of sidewalls on granular flow regimes and properties.
Main Methods:
- Utilized discrete element method (DEM) simulations for granular flow analysis.
- Developed a phase diagram to categorize different flow regimes based on simulation parameters.
Main Results:
- Identified four distinct flow regimes: no flow, bulk flow, surface flow, and gas flow.
- Observed complex interactions with sidewalls, altering the flow behavior compared to unbounded cases.
- Characterized effective friction, critical angles for surface flow, and rheological validity in boundary layers.
Conclusions:
- Sidewalls play a universal role in granular flow, similar to basal boundaries.
- Flow behavior transitions from linear to nonlinear velocity profiles based on wall friction, impacting flow rates.
Keywords:
Flowing Matter: Granular Materials
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