References (6, 7) analyzed approximation of the boundary Equilibrium of a capillary meniscus near a wetting film on a by an ideal meniscus corresponding to a smooth merger of solid in a gravitational field is considered. Unlike previous studies, the meniscus and the wetting film. Inadequate attention was the present study proves that the fine meniscus structure in a paid to the derivation of a meniscus equation approximating gravitational field is a universal feature-it takes place in a wide the interface at the outside of the transition region.
variety of problems. In the general case, the capillary meniscus is
We need a more complete description of the fine structure at a certain distance from the wetting film and does not intersect of a meniscus in connection with dynamics of wetting films it. The relation for the minimum distance from the arbitrary me-(see (8, 10-13)) which are near a meniscus. Note the wide niscus to the solid generalizes the Derjaguin formula for a flat slit.
range of problems in statics of a wetting liquid under gravity.
An equation that optimally approximates the meniscus with due account of the contribution of the meniscus/film transition region Of interest are the problem on interface shape in a padding is derived. A refined solution to the problem of a meniscus on a with solid balls and the problem on a meniscus on a wire vertical plate is derived within the perturbation theory. Both gravsubmerged in a liquid when the wire diameter is comparable ity and nonuniformity of the vertical static film above a capillarywith the capillary constant. The present paper proposes a gravitational meniscus do not affect the minimum distance (the general method for treating such complicated problems on influence is less than 0.0001). A general method for solving sophiscapillary equilibrium of a wetting liquid. ticated problems of capillary equilibrium in gravitational field is proposed.