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Tunable flow asymmetry and flow rectification with bio-inspired soft leaflets
Tunable flow asymmetry and flow rectification with bio-inspired soft leaflets
- Source :
- Physical Review Fluids, Physical Review Fluids, 5(8):084102. American Physical Society
- Publication Year :
- 2020
-
Abstract
- In nature, liquids often circulate in channels textured with leaflets, cilia, or porous walls that deform with the flow. These soft structures are optimized to passively control flows and have inspired the design of novel microfluidic and soft-robotic devices. Yet, the relationship between the geometry of the soft structures and the flow properties remains so far poorly understood. Here, taking inspiration from the lymphatic system, we devise millifluidic valves, dressed with asymmetric soft leaflets that feature on-demand asymmetric flow properties, which we harness to induce flow rectification and pumping. We demonstrate that the functional mechanism at play involves an interplay between geometry, asymmetry, and fluid-structure interaction-induced nonlinearity. Our results open the way to a better characterization of biological leaflet malformations and to more accurate control of flows for microfluidics and soft-robotic systems.
- Subjects :
- Fluid Flow and Transfer Processes
Materials science
media_common.quotation_subject
Microfluidics
Computational Mechanics
technology, industry, and agriculture
02 engineering and technology
Mechanics
021001 nanoscience & nanotechnology
01 natural sciences
Asymmetry
010305 fluids & plasmas
Physics::Fluid Dynamics
Nonlinear system
Rectification
Flow (mathematics)
Modeling and Simulation
0103 physical sciences
Asymmetric flow
0210 nano-technology
Flow properties
Flow asymmetry
media_common
Subjects
Details
- ISSN :
- 2469990X
- Database :
- OpenAIRE
- Journal :
- Physical Review Fluids
- Accession number :
- edsair.doi.dedup.....9d240eed86457a321b8872de3544a116
- Full Text :
- https://doi.org/10.1103/physrevfluids.5.084102