Fluid mixing (stretching) by time periodic sequences for weak flows
- 1 November 1986
- journal article
- letter
- Published by AIP Publishing in Physics of Fluids
- Vol. 29 (11) , 3503-3505
- https://doi.org/10.1063/1.865824
Abstract
The stretching of material lines in time periodic sequences of ‘‘weak’’ flows (i.e., characterized by a linear stretching for long times) in which streamlines change at the end of each periodic unit is quantified in terms of a mixing efficiency. Two different flows and two different strain distributions give nearly identical results in terms of the mixing efficiency and indicate the existence of an optimal operating condition for maximum stretch. The results are relevant to fluid mixing in chaotic flows.Keywords
This publication has 5 references indexed in Scilit:
- Laminar mixing and chaotic mixing in several cavity flowsJournal of Fluid Mechanics, 1986
- Stretching in some classes of fluid motions and asymptotic mixing efficiencies as a measure of flow classificationArchive for Rational Mechanics and Analysis, 1985
- Stirring by chaotic advectionJournal of Fluid Mechanics, 1984
- Description of mixing with diffusion and reaction in terms of the concept of material surfacesJournal of Fluid Mechanics, 1982
- A framework for description of mechanical mixing of fluidsAIChE Journal, 1981