The mechanics of particle accumulation structures in thermocapillary flows
The motion of small particles suspended in a cylindrical thermocapillary liquid bridge is considered. Owing to geometry and surface stresses the streamlines gather near the cylindrical free surface and provoke particle–free-surface collisions. We show numerically that tracers which are perfect but of finite size can accumulate on closed trajectories. A simple model is proposed to explain the attraction of particles to the closed trajectory based on the flow topology in the vicinity of a closed streamline which comes sufficiently close to the free surface and on particle–free-surface collisions which transfer particles among different streamlines.
KeywordsFree Surface European Physical Journal Special Topic Liquid Bridge Release Point Lagrangian Coherent Structure
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- 2.D. Schwabe, P. Hintz, S. Frank, Microgravity Sci. Technol. 9, 163 (1996)Google Scholar
- 9.H.C. Kuhlmann, C. Nienhüser,in Interfacial Fluid Dynamics and Transport Processes, edited by R. Narayanan, D. Schwabe (Springer, Berlin, Heidelberg, 2003), Lecture Notes in Physics, vol. 628, p. 213Google Scholar
- 10.Y. Abe, I. Ueno, H. Kawamura, Interdisciplinary Transport Phenomena (2009)Google Scholar
- 14.H.G. Schuster, Deterministic Chaos, 2nd edn. (VCH Verlagsgesellschaft, 1988)Google Scholar