Abstract The granular temperature is usually regarded as the unsteady velocity component when particles move in disorder. This property has been applied to model a wide range of phenomena. To more accurately measure the granular temperature via speckle visibility spectroscopy (SVS), this paper uses the particle velocity to complete the correction of the SVS method. The results show that differences in the granular temperature are acceptable between the corrected SVS and the discrete element method (DEM) for the continuous movement of spherical particles in a rotating cylinder. The granular temperature of the y or z axis is approximately 2–3 times higher than that of the x axis. The granular temperature in the active layer is approximately 5–8 times higher than that of the passive to active layers. The corrected SVS method is superior for engineering applications.

中文翻译：

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SVS和DEM测得的转筒内颗粒温度对比

摘要 颗粒温度通常被认为是颗粒无序运动时的非定常速度分量。此属性已被应用于对范围广泛的现象进行建模。为了通过散斑能见度光谱（SVS）更准确地测量颗粒温度，本文采用粒子速度来完成SVS方法的修正。结果表明，对于球形颗粒在旋转圆柱体中的连续运动，校正 SVS 和离散元方法 (DEM) 之间的颗粒温度差异是可以接受的。y 轴或 z 轴的颗粒温度比 x 轴的颗粒温度高约 2-3 倍。主动层中的颗粒温度比被动到主动层的颗粒温度高约 5-8 倍。