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中文摘要：
有效的热交换是提高磁制冷机效率的重要因素．用改进的纳维一斯托克斯方程，建立了基于AMR循环原理的直线往复式磁制冷机制冷床内热交换的理论模型，并用数值计算方法模拟了以钆为工质的磁制冷循环．理论与模拟结果表明，改变热交换方程参数影响制冷效果．在模拟计算中，孔隙度取值为0．15～0．4，孔隙度越小制冷效果越好；循环频率取值为0．21～0．42Hz，频率越大制冷效果越好；传热流体速度取值为0．2～0．4m／s，流速越大制冷效果越好．
英文摘要：
Effective heat transfer is important for increasing efficiency of magnetic refrigeration. In this paper,we report on the establishment of heat transfer model based on an improved Navier-Stokes equation for the AMR cycle reciprocating magnetic refrigerator, and simulate the magnetic refrigeration cycle of Gadolinium using numerieal simulation method. The theoretical and numerical results show that the change of the heat transfer parameters can impact on cooling effect. When the porosity ranged from 0.15 to 0.4, the smaller value makes the better cooling capacity. And the cycle frequency ranged from 0.21 Hz to 0.42 Hz,the higher frequency leads to higher cooling capacity. When the fluid velocity ranged from 0.2 m/s to 0.4 m/s,the faster velocity can make the higher cooling capacity.
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Peculiar influence of Mn/Fe ratio on the magnetic and magnetocaloric properties of Mn2？xFexP0.6Si0.2
Peculiar influence of Mn/Fe ratio on the magnetic and magnetocaloric properties of Mn2-xFexP0.6Si0.2
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