In this study, velocimetry and statistical analyses were conducted on a swirling fluidized bed. A bed of spherical particles (4 mm) was fluidized by using an annular distributor covered with mesh. The angles of rectangular blades in the distributor were set at 30°, 45°, 60°, 75° and 90°, and the cell size of the mesh cover was 2.5 × 2.5 mm². The weight was varied from 500 to 1250 g and the effect of each variable on bed velocity response was quantified through velocimetry and statistical analysis. The statistical analysis was conducted using NCSS statistical software. The blade angle, bed weight and superficial velocity for 4 mm particles were statistically optimized at 750 g, 58.26° and 1.45 m/s, respectively. On the experimental side, these parameters have been optimized at 750 g, 60° and 1.41 m/s, respectively. A small difference of 1.74° was noticed in experimental and statistical predictions for the blade angle. The bed weights and superficial velocities were found to be same in both cases. The confidence interval (95%) for bed velocity was proposed in the range of 0.513 to 0.519 m/s. The experimentally optimized bed velocity remained within the proposed range. The well-agreeing results indicate good practical value of distributor design and high precision of the experimental measurements.

中文翻译：

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旋转流化床网格耦合环形分配器设计数据的实验和统计验证

在这项研究中，测速和统计分析是在旋流床上进行的。通过使用覆盖有网孔的环形分配器使球形颗粒床（4mm）流化。分配器中矩形叶片的角度分别设置为30°，45°，60°，75°和90°，网罩的像元大小为2.5×2.5 mm ²。重量从500到1250 g不等，并且通过测速和统计分析量化了每个变量对床速响应的影响。使用NCSS统计软件进行统计分析。分别对750 g，58.26°和1.45 m / s的统计值优化了4 mm颗粒的叶片角，床重和表面速度。在实验方面，这些参数分别分别优化为750 g，60°和1.41 m / s。在叶片角度的实验和统计预测中注意到1.74°的微小差异。两种情况下的床重和表面速度均相同。床速度的置信区间（95％）建议在0.513至0.519 m / s的范围内。实验优化的床速度保持在建议的范围内。