Abstract
The following paper examines different configurations of pin geometries for rotatory magnetocaloric regenerators, through detailed multiphysics simulations. The analysis is first done by characterizing the performance of each geometry against the multiple physical phenomena that intervene in a magnetocaloric regenerator: magnetic, fluid and thermal fields. Then, full 3D AMR cycles are simulated for a selected group of pin geometries, and conclusions are drawn between the temperature span of the regenerators and the separately analyzed physical phenomena. The main novelty of this study is the analysis of the tortuosity of the fluid flow, a characteristic parameter of porous media. One of the main conclusions is that an increased tortuosity might be a valid alternative strategy to increase the power of magnetocaloric regenerators.
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