Bending and torsional reconfiguration of chiral rods under wind and gravity

Hassani, Masoud; Laurin, Simon Molgat; Mureithi, Njuki W.; Gosselin, Frédérick P.

doi:10.1016/j.eml.2017.02.002

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…Upon cooling, these ribbons adopted a stress-free chiral shape. Hassani et al (2017) then proceeded to measure their drag as they reconfigured in a wind tunnel for different incidence angles. Whereas the untwisted ribbon exhibits much variation in drag depending on its relative orientation in the flow, intrinsic twist makes the reconfiguration of the ribbons more isotropic.…”

Section: Torsion and Chiralitymentioning

confidence: 99%

“…A numerical model of chiral ribbon reconfiguration predicted that the root bending moment on the chiral ribbon depends on the angle at which the flow hits its. Considering the worst case (the flow direction which creates the largest bending moment), Hassani et al (2017) compiled the variation of the root bending moment versus intrinsic angle for different ribbons with the simulated properties of eelgrass, Zostera Marina, and cattail leaf, Typha angustifolia. The plot of Figure 6 (c) shows that for both simulated ribbons, the maximum bending moment increases with intrinsic twist angle for small angles.…”

Section: Torsion and Chiralitymentioning

confidence: 99%

“…The simulated ribbons had geometrical and material parameters values similar to those of eelgrass and cattail leaf. Data from Hassani et al 2017.…”

Section: Figure 6 Buckling Of a Chiral Ribbon Under Uniformly Distrib...mentioning

confidence: 99%

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Mechanics of a plant in fluid flow

Gosselin

2019

Journal of Experimental Botany

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Plants live in constantly moving fluid, whether air or water. In response to the loads associated with fluid motion, plants bend and twist, often with great amplitude. These large deformations are not found in traditional engineering application and thus necessitate new specialized scientific developments. Studying fluid–structure interaction (FSI) in botany, forestry, and agricultural science is crucial to the optimization of biomass production for food, energy, and construction materials. FSIs are also central in the study of the ecological adaptation of plants to their environment. This review paper surveys the mechanics of FSI on individual plants. I present a short refresher on fluid mechanics then dive into the statics and dynamics of plant–fluid interactions. For every phenomenon considered, I examine the appropriate dimensionless numbers to characterize the problem, discuss the implications of these phenomena on biological processes, and propose future research avenues. I cover the concept of reconfiguration while considering poroelasticity, torsion, chirality, buoyancy, and skin friction. I also assess the dynamical phenomena of wave action, flutter, and vortex-induced vibrations.

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Section: Torsion and Chiralitymentioning

confidence: 99%

Section: Torsion and Chiralitymentioning

confidence: 99%