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000012962 084__ $$2WoS$$aPhysics, Condensed Matter
000012962 1001_ $$0P:(DE-Juel1)130885$$aPersson, B. N. J.$$b0$$uFZJ
000012962 245__ $$aFluid dynamics at the interface between contacting elastic solids with randomly rough surfaces
000012962 260__ $$aBristol$$bIOP Publ.$$c2010
000012962 300__ $$a265004
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000012962 440_0 $$03703$$aJournal of Physics: Condensed Matter$$v22$$x0953-8984$$y26
000012962 500__ $$aI thank G Carbone and M Scaraggi for interesting discussions. I thank A Wohlers for supplying the AFM and STM topography data for the grinded steel surface and for discussions. This work, as part of the European Science Foundation EUROCORES Program FANAS, was supported from funds by the DFG and the EC Sixth Framework Program, under contract N ERAS-CT-2003-980409.
000012962 520__ $$aWe study fluid dynamics at the interface between elastic solids with randomly rough surfaces. The contact mechanics model of Persson is used to take into account the elastic interaction between the solid walls, and the Bruggeman effective medium theory to account for the influence of the disorder on the fluid flow. We calculated the flow tensor which determines the pressure flow factor and, for example, the leak rate of static seals. It is shown how the perturbation treatment of Tripp can be extended to arbitrary order in the ratio between the root-mean-square roughness amplitude and the average interfacial surface separation. We introduce a matrix D(ζ), determined by the surface roughness power spectrum, which can be used to describe the anisotropy of the surface at any magnification ζ. Results are presented for the asymmetry factor γ(ζ) (generalized Peklenik number) for grinded steel and sandblasted PMMA surfaces.
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000012962 650_2 $$2MeSH$$aAnisotropy
000012962 650_2 $$2MeSH$$aElasticity
000012962 650_2 $$2MeSH$$aHydrodynamics
000012962 650_2 $$2MeSH$$aMicroscopy, Atomic Force: methods
000012962 650_2 $$2MeSH$$aMicroscopy, Scanning Tunneling: methods
000012962 650_2 $$2MeSH$$aModels, Statistical
000012962 650_2 $$2MeSH$$aPressure
000012962 650_2 $$2MeSH$$aSurface Properties
000012962 650_7 $$2WoSType$$aJ
000012962 773__ $$0PERI:(DE-600)1472968-4$$a10.1088/0953-8984/22/26/265004$$gVol. 22, p. 265004$$p265004$$q22<265004$$tJournal of physics / Condensed matter$$v22$$x0953-8984$$y2010
000012962 8567_ $$uhttp://dx.doi.org/10.1088/0953-8984/22/26/265004
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000012962 9141_ $$y2010
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000012962 9201_ $$0I:(DE-Juel1)VDB781$$d31.12.2010$$gIFF$$kIFF-1$$lQuanten-Theorie der Materialien$$x0
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