Abstract

Asymptotic formulas have been derived for pressure tensor in a liquid- or gas-filled circular slit between the faces of two identical cylinders. The problem has being solved based on the asymptotic principle of interbody dispersion interactions in liquid media, while the calculations have been performed in terms of the Irving–Kirkwood pressure tensor. The final result has the form of normal pressure as a function of slit radius and width and the location inside the slit, with the location being specified by a radial coordinate and the distances from the slit walls. The contribution of edge effects at equal width and radius of a slit has been estimated to be as high as 70%.

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