Numerical simulation of influencing factors on active magnetic regenerator with liquid hydrogen temperature range

LIU Yakun; LI Zhenxing; HU Zhouhang; LI Jiaxin; LI Jian; SHEN Jun

doi:10.11949/0438-1157.20260242

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Numerical simulation of influencing factors on active magnetic regenerator with liquid hydrogen temperature range

更新时间：2026-07-08

- Numerical simulation of influencing factors on active magnetic regenerator with liquid hydrogen temperature range
- CIESC Journal (2026)
- 作者机构：
  
  1.北京理工大学机械与车辆学院，北京 100081
  2.中国科学院理化技术研究所，北京 100190
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260242
  CLC： TB 661
- Received：18 February 2026，
  
  Revised：2026-07-07，
  
  Accepted：08 July 2026，
- 稿件说明：
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LIU Yakun, LI Zhenxing, HU Zhouhang, et al. Numerical simulation of influencing factors on active magnetic regenerator with liquid hydrogen temperature range[J/OL]. CIESC Journal, 2026.
DOI：

LIU Yakun, LI Zhenxing, HU Zhouhang, et al. Numerical simulation of influencing factors on active magnetic regenerator with liquid hydrogen temperature range[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260242.

摘要

液氢温区的低温与制冷技术是能源动力、红外探测和科学研究领域的关键制冷技术，磁制冷技术由于在液氢温区的潜在效率高，有望成为液氢温区重要的制冷技术之一。本研究基于多物理场仿真软件 COMSOL Multiphysics 构建了液氢温区二维瞬态主动磁回热器仿真模型。针对液氢温区磁制冷系统中的主动磁回热器，深入揭示了磁制冷工质颗粒直径、磁场-流场时序等影响因子对液氢温区磁制冷性能的影响规律，评估了20 K - 30 K温区填充实际磁制冷工质的主动磁回热器制冷性能。结果表明AMR制冷性能对于颗粒直径的敏感性程度高于吹风系数对其影响，这是由于颗粒直径从0.05 mm增大至0.40 mm时，AMR的比表面积下降至原来的1/8。本研究为理解液氢温区多级磁制冷系统的性能影响规律以及后续整机优化设计与性能研究提供理论指导。

Abstract

Cryogenic and refrigeration technologies in the liquid hydrogen temperature range are critical refrigeration techniques in the fields of energy power

infrared detection

and scientific research. Due to its potential for high efficiency in the liquid hydrogen temperature range

magnetic refrigeration technology is expected to become one of the key refrigeration technologies in this temperature range. In this study

a two-dimensional transient simulation model of an active magnetic regenerator (AMR) for the liquid hydrogen temperature range was developed using COMSOL Multiphysics. For an AMR in liquid hydrogen temperature range magnetic refrigeration

this study analyzes the impact of particle diameter and timing between magnetic field and fluid flow on refrigeration performance

and assesses its cooling capacity from 20 K to 30 K using actual magnetocaloric materials. The refrigeration performance of the active magnetic regenerator filled with actual magnetocaloric materials in the temperature range of 20 K to 30 K is evaluated. The results indicate that the sensitivity of AMR refrigeration performance to particle diameter is greater than its sensitivity to the timing ratio as the specific surface area of the AMR decreases sharply by approximately to 1/8 when the particle diameter increases from 0.05 mm to 0.40 mm. This study provides theoretical guidance for understanding the performance characteristics of multi-stage magnetic refrigeration systems in the liquid hydrogen temperature range

as well as for the optimized design and performance evaluation of prototype.

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references

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