Data on experimental characterization of AMR constructed using LBM technique

This data set contains experimental data on characterizing the nature-inspired geometry for fluid flow through a solid porous regenerator used in active magentocaloric cooling applications. The data is sorted into several groups: 1. Passive data. This data was collected during the passive testing of 6 regenerators, of which 3 were made out of aluminum and 3 out of magnetocaloric material (MCM). The aim of these experiments was to determine the thermal effectiveness of the regenerators and the pressure drop though them. Since the aluminum regenerators had better surface quality and higher permeability than MCM ones, passive tests allowed to compare performance of different flow channel geometries. The passive testing on MCM regenerators was done in order to determine pressure drop and qualitatively evaluate surface roughness of the flow channels. 2. Active data. In this data set, the raw data from active magnetic testing are stored. MCM regenerators were characterized in a small-scale magnetocaloric demonstrator. The aim of this study was to investigate the behavior of the MCM regenerators under thermo-magnetic cycling. Each of the data files in this group contains full experimental data, but only the last 200s from the recorded data is used for the analysis, since the regenerators reached the periodic steady state condition. 3. Adiabatic temperature change measurements. This experiment was done under heating protocol. The sample and the cabinet were cooled to 273 K. The sample was thermally insulated from surroundings. Once the experiment was started, the cabinet temperature was increased to 302 K. The sample was cyclically magnetized and demagnetized until it reached thermal equilibrium with the cabinet. The data set contains recordings of sample temperature when it was magnetized and demagnetized, as well as induction effect, which must be eliminated before data analysis. 4. Microscopy images. There are microscopy images of randomly selected flow channels of each regenerator. 5. VSM and DSC data. These data are available only in Matlab figure format.本数据集包含用于表征主动磁制冷应用中固体多孔回热器内流体流动的仿生几何特性的实验数据。数据分为以下若干组别： 1. 被动实验数据。该部分数据采集自6台回热器的被动测试，其中3台由铝制成，另外3台由磁热材料（magnetocaloric material, MCM）制成。本实验旨在测定回热器的热有效性与流体通过时的压降。由于铝制回热器相比MCM回热器具备更优异的表面质量与更高的渗透率，被动测试可用于对比不同流道几何结构的性能表现。而针对MCM回热器的被动测试，则用于测定其流体压降并定性评估流道表面粗糙度。 2. 主动实验数据。本数据集存储了主动磁测试的原始数据。MCM回热器在小型磁热演示装置中完成表征。本研究旨在探究MCM回热器在热磁循环下的运行特性。该组下的每个数据文件均包含完整的实验记录，但仅取记录数据的最后200秒用于分析，因为此时回热器已达到周期性稳态工况。 3. 绝热温变测量数据。本实验采用加热流程开展。将样品与实验舱冷却至273 K，随后使样品与环境绝热隔离。实验启动后，将实验舱温度提升至302 K。对样品进行周期性充磁与退磁操作，直至其与实验舱达到热平衡。本数据集记录了样品在充磁与退磁过程中的温度变化，以及需在数据分析前予以消除的感应效应相关数据。 4. 显微图像。包含每台回热器随机选取的流道的显微图像。 5. 振动样品磁强计（Vibrating Sample Magnetometer, VSM）与差示扫描量热法（Differential Scanning Calorimetry, DSC）数据。该类数据仅以Matlab绘图格式提供。