Universality in statistics of Stokes flow over a no-slip wall with random roughness
| Autor: | Vladimir Lebedev, V. M. Parfenyev, Sergey Belan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
0209 industrial biotechnology Waviness Mechanical Engineering Applied Mathematics Microfluidics Fluid Dynamics (physics.flu-dyn) FOS: Physical sciences Physics - Fluid Dynamics 02 engineering and technology Slip (materials science) Surface finish Stokes flow 021001 nanoscience & nanotechnology Condensed Matter Physics Universality (dynamical systems) Open-channel flow 020901 industrial engineering & automation Flow velocity Mechanics of Materials Statistics 0210 nano-technology |
| Zdroj: | Journal of Fluid Mechanics. 862:1084-1104 |
| ISSN: | 1469-7645 0022-1120 |
| Popis: | Stochastic roughness is a widespread feature of natural surfaces and is an inherent byproduct of most fabrication techniques. In view of the rapid development of microfluidics, the important question is how this inevitable problem affects the low-Reynolds-number flows that are common for micro-devices. Moreover, one could potentially turn the flaw into a virtue and control the flow properties by means of specially ‘tuned’ random roughness. In this paper we investigate theoretically the statistics of fluctuations in fluid velocity produced by the waviness irregularities at the surface of a no-slip wall. Particular emphasis is laid on the issue of the universality of our findings. |
| Databáze: | OpenAIRE |
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