Research into the time-depended transactional processes in viscoplastic fluids

The paper presents problem of transition from one steady-state conditions of viscoplastic fluid flow to another between parallel planes. The prоblem definition is given within the limits of five-parameter model, which permits to take up differences between behavior under stress and without stress and possibe slippage along the solid walls. Hysteresis of deformation is considered bу means of model of smooth transition from adhesion to slippage. The solution is determined bу method of momentary eigenfunctions of Melamed–Grinberg.