Conveyor belt dryers have been applied extensively in the drying process even though the problem of uneven drying along the dryer length exist. The general solution is to install an auxiliary device in the chamber to adjust the arrangement of air passages. A series of problems, however, are observed, such as occupying internal space and increasing flow resistance. A novel flow field improvement technology has been developed and conducted by Computational Fluid Dynamics (CFD) with a modified heat and moisture transfer model and validated by physical verification. The results show that specific stacking of feedstock characterized as vertical serration stacking with 30° angle and 43.0 mm interval can help to improve drying performance. Three indices (Integrate area, M_avg, and M_u) for the evaluation of velocity distribution confirms that most uniform moisture of products is obtained with the specific characteristics. This work presents an unconventional method to solve the problem of uneven air-distribution and thus improving drying efficiency.

尽管存在沿干燥器长度不均匀干燥的问题，但传送带式干燥机已广泛应用于干燥过程中。一般的解决方案是在腔体内安装辅助装置，以调整气道的布置。然而，观察到了一系列问题，例如占用内部空间和增加流动阻力。Computational Fluid Dynamics (CFD) 开发并实施了一种新的流场改进技术，该技术具有改进的热湿传递模型，并通过物理验证进行了验证。结果表明，以30°角和43.0 mm间隔的垂直锯齿堆垛为特征的原料特定堆垛有助于提高干燥性能。三个指标（Integrate area , M _avg, 和M _u ) 用于评估速度分布证实了产品的最均匀水分是通过特定特性获得的。这项工作提出了一种非常规的方法来解决空气分布不均的问题，从而提高干燥效率。