Numerical simulation of the mechanism motion dynamics in the incompressible medium flow using the vortex loop method

The urgent problem of developing new software package designed to simulate the processes of interaction between a mechanism or its elements and the incompressible medium flow was solved. In this complex, the open source Project Chrono software program was used to calculate the mechanism dynamics, and the VM3D program implementing the meshless Lagrangian method of vortex loops was introduced to calculate the flow around the body and the unsteady aerohydrodynamic loads. An algorithm for solving the related structure problem and flow interaction was proposed. The software package operation was demonstrated using the example of a device mechanism for converting the renewable energy, which could be used in the context of designing small wind and hydroelectric power plants. The paper shows that the crank is capable of damped oscillations or autorotation depending on the mechanism parameters and the oncoming flow. The power range that could be obtained in the stable rotation mode of the output link was found. Data obtained could be used to design small wind and hydroelectric power plants.

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