当前位置: X-MOL 学术Powder Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Cracking prediction of germinated brown rice based on intragranular drying kinetics
Powder Technology ( IF 4.5 ) Pub Date : 2022-06-03 , DOI: 10.1016/j.powtec.2022.117587
Hanru Liu , Yurong He , Tianqi Tang , Ming Zhai

During convective drying of wet granular materials like germinated brown rice (GBR), excessively high drying rates can lead to crack formation in the particles. However, cracking characteristics of GBR during exposure to different drying stages, unclear especially the critical conditions for cracking. In this study, experiments and numerical simulations were performed in an attempt to predict the cracking behavior of GBR under different drying stages through intragranular drying kinetics. Our results showed that the variations in cracking probability could be divided into three different stages. This phenomenon was dominated by the close relationship between particle strength and moisture gradient. The cumulative effect of moisture gradient is one of the important leading to crack initiation and evolution. Moreover, a prediction model of cracking probability as a function of drying time was proposed. Finally, the critical water evaporation coefficient was introduced to quantify the cracking safe region of GBR.



中文翻译:

基于粒内干燥动力学的发芽糙米开裂预测

在发芽糙米 (GBR) 等湿颗粒材料的对流干燥过程中,过高的干燥速率会导致颗粒中形成裂纹。然而,GBR在不同干燥阶段的开裂特性,尤其是开裂的临界条件尚不清楚。在这项研究中,进行了实验和数值模拟,试图通过粒内干燥动力学来预测 GBR 在不同干燥阶段下的开裂行为。我们的结果表明,开裂概率的变化可以分为三个不同的阶段。这种现象主要由颗粒强度和水分梯度之间的密切关系所支配。水分梯度的累积效应是导致裂纹萌生和演化的重要因素之一。而且,提出了作为干燥时间函数的开裂概率预测模型。最后,引入临界水分蒸发系数来量化GBR的开裂安全区。

更新日期:2022-06-06
down
wechat
bug