dorsal/arxiv
View SchemaPreventing transition to turbulence: a viscosity stratification does not always help
| Authors | Vijayakumar Chikkadi, A. Sameen, Rama Govindarajan |
|---|---|
| Categories | |
| ArXiv ID | physics/0511098 |
| URL | https://arxiv.org/abs/physics/0511098 |
| DOI | 10.1103/PhysRevLett.95.264504 |
| Journal | Phys. Rev. Lett. 95, 264504 (2005) |
Abstract
In channel flows a step on the route to turbulence is the formation of streaks, often due to algebraic growth of disturbances. While a variation of viscosity in the gradient direction often plays a large role in laminar-turbulent transition in shear flows, we show that it has, surprisingly, little effect on the algebraic growth. Non-uniform viscosity therefore may not always work as a flow-control strategy for maintaining the flow as laminar.
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"abstract": "In channel flows a step on the route to turbulence is the formation of\nstreaks, often due to algebraic growth of disturbances. While a variation of\nviscosity in the gradient direction often plays a large role in\nlaminar-turbulent transition in shear flows, we show that it has, surprisingly,\nlittle effect on the algebraic growth. Non-uniform viscosity therefore may not\nalways work as a flow-control strategy for maintaining the flow as laminar.",
"arxiv_id": "physics/0511098",
"authors": [
"Vijayakumar Chikkadi",
"A. Sameen",
"Rama Govindarajan"
],
"categories": [
"physics.flu-dyn",
"cond-mat.other",
"cond-mat.soft"
],
"doi": "10.1103/PhysRevLett.95.264504",
"journal_ref": "Phys. Rev. Lett. 95, 264504 (2005)",
"title": "Preventing transition to turbulence: a viscosity stratification does not always help",
"url": "https://arxiv.org/abs/physics/0511098"
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