An efficient numerical scheme for the simulation of parallel-plate active magnetic regenerators

作者：Torregrosa Jaime Barbara^*; Corberan Jose M; Paya Jorge; Engelbrecht Kurt

来源：International Journal of Refrigeration, 2015, 58: 121-130.

DOI：10.1016/j.ijrefrig.2015.06.007

• Regenerator
• Modelling
• Simulation
• Magnetic refrigerator
• Finite differences

A one-dimensional model of a parallel-plate active magnetic regenerator (AMR) is presented in this work. The model is based on an efficient numerical scheme which has been developed after analysing the heat transfer mechanisms in the regenerator bed. The new finite difference scheme optimally combines explicit and implicit techniques in order to solve the one-dimensional conjugate heat transfer problem in an accurate and fast manner while ensuring energy conservation. The present model has been thoroughly validated against passive regenerator cases with an analytical solution. Compared to the fully implicit scheme, the proposed scheme achieves more accurate results, prevents numerical errors and requires less computational effort. In AMR simulations the new scheme can reduce the computational time by 89%.

• 出版日期2015-10