ArticleScientific reports2020
Active open-loop control of elastic turbulence.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Periodic Flows in Microfluidics.Small (Weinheim an der Bergstrasse, Germany) · 2024Review
- Role of viscoelasticity in the appearance of low-Reynolds turbulence: considerations for modelling.Journal of biological engineering · 2024Review
- Using symmetry to control viscoelastic waves in pillar arrays.RSC advances · 2023Article
- Rayleigh-Taylor instability in strongly coupled plasma.Scientific reports · 2022Article
- A simple yet efficient approach for electrokinetic mixing of viscoelastic fluids in a straight microchannel.Scientific reports · 2022Article
- Elastic turbulence generates anomalous flow resistance in porous media.Science advances · 2021Article
- Numerical Investigation of T-Shaped Microfluidic Oscillator with Viscoelastic Fluid.Micromachines · 2021Article
Corrections and comments
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Authors and funding
2 authors.
Funding
Abstract
We demonstrate through numerical solutions of the Oldroyd-B model in a two-dimensional Taylor-Couette geometry that the onset of elastic turbulence in a viscoelastic fluid can be controlled by imposed shear-rate modulations, one form of active open-loop control. Slow modulations display rich and complex behavior where elastic turbulence is still present, while it vanishes for fast modulations and a laminar response with the Taylor-Couette base flow is recovered. We find that the transition from the laminar to the turbulent state is supercritical and occurs at a critical Deborah number. In the state diagram of both control parameters, Weissenberg versus Deborah number, we identify the region of elastic turbulence. We also quantify the transition by the flow resistance, for which we derive an analytic expression in the laminar regime within the linear Oldroyd-B model. Finally, we provide an approximation for the transition line in the state diagram introducing an effective critical Weissenberg number in comparison to constant shear. Deviations from the numerical result indicate that the physics behind the observed laminar-to-turbulent transition is more complex under time-modulated shear flow.
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Registered trials
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