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- W4285662906 abstract "We study the laminar and turbulent channel flow over a viscous hyper-elastic wall and show that it is possible to sustain an unsteady chaotic turbulent-like flow at any Reynolds number by properly choosing the wall elastic modulus. We propose a physical explanation for this effect by evaluating the shear stress and the turbulent kinetic energy budget in the fluid and elastic layer. We vary the bulk Reynolds number from 2800 to 10 and identify two distinct mechanisms for turbulence production. At moderate and high Reynolds numbers, turbulent fluctuations activate the wall oscillations, which, in turn, amplify the turbulent Reynolds stresses in the fluid. At very low Reynolds number, the only production term is due to the energy input from the elastic wall, which increases with the wall elasticity. This mechanism may be exploited to passively enhance mixing in microfluidic devices." @default.
- W4285662906 created "2022-07-17" @default.
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- W4285662906 date "2020-08-04" @default.
- W4285662906 modified "2023-09-26" @default.
- W4285662906 title "Low Reynolds number turbulent flows over elastic walls" @default.
- W4285662906 doi "https://doi.org/10.48550/arxiv.2008.01336" @default.
- W4285662906 hasPublicationYear "2020" @default.
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