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Non-iterative method has been developed for solving the coupled problem of flow-structure interaction. For simulation of an incompressible flow the two-dimensional numerical method of viscous vortex domains (VVD) based on Navier-Stokes equations has been used [1], [2]. The body motion equations are incorporated into the system of fluid dynamics equa- tions, that allows to solve the coupled problem without iterations. In present study this method is applied for simulating oscillations of one and two pendulums in a fluid under gravity. 01-04 july 2013