Finite-size Coherent Structures in Thermocapillary Liquid Bridges

DOI:10.15011//jasma.36.360201
Int. J. Microgravity Sci. Appl. 2019p360201
Author
F. ROMANÒ and H.C. KUHLMANN
Organization
Institute of Fluid Mechanics and Heat Transfer, TU Wien, Getreidemarkt, Dept. Biomed. Eng., University of Michigan
Abstract
When small particles are suspended in a three-dimensional steady incompressible flow, Lagrangian coherent particle structures can be created by dissipative mechanisms which rely either on inertia, buoyancy or particle–boundary interactions. The dissipative effect particles experience when moving close to a wall or a free surface can lead to a particular rapid attraction of the particles to periodic, quasi-periodic or strange orbits. The particle–boundary interaction dominates the accumulation of particles in thermocapillary liquid bridges of millimetric size if the particles are small, giving rise to finite-size coherent structures, depending on the topological template of the underlying incompressible flow. The achievements obtained in understanding finite-size coherent structures in liquid bridges are reviewed, commenting the theoretical, experimental and numerical developments over the last two decades. Moreover, open questions and perspectives of the research on finite-size Lagrangian coherent structures are discussed.
Keyword(s)
Thermocapillary liquid bridge, Coherent structure, Particle accumulation, Dissipative structure
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Received 8 February 2019, Accepted April 2019, Published 30 April 2019

© The Japan Society of Microgravity Applicaiton

この投稿文は次の言語で読めます: Japanese

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