Authors Beris A.N., Tsamopoulos J.A., Armstrong R.C., Brown R.A. Abstract A solid sphere falling through a Bingham plastic moves in a small envelope of fluid with shape that depends on the yield stress. A finite element/Newton method is presented for solving the free boundary problem composed of the velocity and […]
1982
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Authors Tsamopoulos J.A., Brown R.A. Abstract Moderate-amplitude axisymmetric oscillations of incompressible inviscid drops and bubbles are studied using a Poincaré-Lindstedt expansion technique. The corrections to the drop shape and velocity potential caused by mode coupling at second order in amplitude are predicted for two-, three-and four-lobed motions. The frequency of […]