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arXiv · 1005.5717

Simulations of slip flow on nanobubble-laden surfaces

Jari Hyväluoma·Christian Kunert·Jens Harting
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Abstract

On microstructured hydrophobic surfaces, geometrical patterns may lead to the appearance of a superhydrophobic state, where gas bubbles at the surface can have a strong impact on the fluid flow along such surfaces. In particular, they can strongly influence a detected slip at the surface. We present two-phase lattice Boltzmann simulations of a flow over structured surfaces with attached gas bubbles and demonstrate how the detected slip depends on the pattern geometry, the bulk pressure, or the shear rate. Since a large slip leads to reduced friction, our results allow to assist in the optimization of microchannel flows for large throughput.

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Jari Hyväluoma, Christian Kunert, Jens Harting. 2010-05-31. Simulations of slip flow on nanobubble-laden surfaces. https://doi.org/10.1088/0953-8984%2F23%2F18%2F184106

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