title: Simulations of slip flow on nanobubble-laden surfaces.
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 give assistance in the optimization of microchannel flows for large throughput.
authors.affiliation: MTT Agrifood Research Finland, FI-31600 Jokioinen, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Hyväluoma
authors.forename: C
authors.initials: C
authors.lastname: Kunert
authors.forename: J
authors.initials: J
authors.lastname: Harting
mesh_terms: D000465:Algorithms; D001696:Biomechanical Phenomena; D001703:Biophysics / Q000379:methods; D003198:Computer Simulation; D004247:DNA / Q000737:chemistry*; D045423:Microbubbles; D044085:Microfluidics; D015233:Models, Statistical; D008962:Models, Theoretical; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D013499:Surface Properties
chemical_list: D004247:DNA