An optimal principle in fluid-structure interaction

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

We study the steady terminal orientation of a fore-aft symmetric body as it settles in a viscous fluid. An optimal principle for the settling behavior is discussed based upon entropy production in the system, both in the Stokes limit and the case of near equilibrium states when inertial effects emerge. We show that in the Stokes limit, the entropy production in the system is zero allowing any possible terminal orientation while in the presence of inertia, the particle assumes a horizontal position which coincides with the state of maximum entropy production. Our results are seen to agree well with experimental observations.

Original languageEnglish
Pages (from-to)2945-2951
Number of pages7
JournalPhysica D: Nonlinear Phenomena
Volume237
Issue number22
DOIs
StatePublished - 15 Nov 2008

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entropy
fluids
settling
interactions
viscous fluids
inertia

Keywords

  • Entropy production
  • Fluid-structure interaction
  • Orientation

Cite this

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abstract = "We study the steady terminal orientation of a fore-aft symmetric body as it settles in a viscous fluid. An optimal principle for the settling behavior is discussed based upon entropy production in the system, both in the Stokes limit and the case of near equilibrium states when inertial effects emerge. We show that in the Stokes limit, the entropy production in the system is zero allowing any possible terminal orientation while in the presence of inertia, the particle assumes a horizontal position which coincides with the state of maximum entropy production. Our results are seen to agree well with experimental observations.",
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An optimal principle in fluid-structure interaction. / Chung, Bong Jae; Vaidya, Ashuwin.

In: Physica D: Nonlinear Phenomena, Vol. 237, No. 22, 15.11.2008, p. 2945-2951.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - An optimal principle in fluid-structure interaction

AU - Chung, Bong Jae

AU - Vaidya, Ashuwin

PY - 2008/11/15

Y1 - 2008/11/15

N2 - We study the steady terminal orientation of a fore-aft symmetric body as it settles in a viscous fluid. An optimal principle for the settling behavior is discussed based upon entropy production in the system, both in the Stokes limit and the case of near equilibrium states when inertial effects emerge. We show that in the Stokes limit, the entropy production in the system is zero allowing any possible terminal orientation while in the presence of inertia, the particle assumes a horizontal position which coincides with the state of maximum entropy production. Our results are seen to agree well with experimental observations.

AB - We study the steady terminal orientation of a fore-aft symmetric body as it settles in a viscous fluid. An optimal principle for the settling behavior is discussed based upon entropy production in the system, both in the Stokes limit and the case of near equilibrium states when inertial effects emerge. We show that in the Stokes limit, the entropy production in the system is zero allowing any possible terminal orientation while in the presence of inertia, the particle assumes a horizontal position which coincides with the state of maximum entropy production. Our results are seen to agree well with experimental observations.

KW - Entropy production

KW - Fluid-structure interaction

KW - Orientation

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DO - 10.1016/j.physd.2008.04.017

M3 - Article

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JO - Physica D: Nonlinear Phenomena

JF - Physica D: Nonlinear Phenomena

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