Preventing transition to turbulence: a viscosity stratification does not always help
流体动力学
2007-05-23 v1 其他凝聚态物理
软凝聚态物质
摘要
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.
引用
@article{arxiv.physics/0511098,
title = {Preventing transition to turbulence: a viscosity stratification does not always help},
author = {Vijayakumar Chikkadi and A. Sameen and Rama Govindarajan},
journal= {arXiv preprint arXiv:physics/0511098},
year = {2007}
}
备注
9 pages, 8 figures