Contact conduction heat transfer behavior in a rotary drum using the discrete element method (DEM)-based simulation codes MFIX-DEM (open-source) and EDEM (commercial) is investigated. Simulations are performed to compare the performance of open-source and commercial code models with experimental data. This study also aims to investigate the effects of particle size distribution (PSD), rotation speed, and rolling friction on overall wall–bed heat transfer using the validated codes. It is found that the variability in the PSD with same mean, μ, and standard deviation, σ, resulted in different heat transfer coefficients. Monodispersed particle beds exhibit better heat transfer when compared to polydispersed beds, because heat transfer is inhibited as the distribution broadens due to segregation. Rotation speed has minimal impact on conduction heat transfer. At lower values of rolling friction, particle circulation in the bed is enhanced and therefore better heat transfer is achieved.

使用基于离散元素方法（DEM）的仿真代码MFIX-DEM（开源）和EDEM（商业）研究了转鼓中的接触传导传热行为。进行仿真以将开放源代码和商业代码模型的性能与实验数据进行比较。这项研究还旨在使用已验证的代码研究粒径分布（PSD），旋转速度和滚动摩擦对整体壁床传热的影响。发现PSD的均值μ和标准偏差σ均相同导致不同的传热系数。与多分散床相比，单分散颗粒床表现出更好的热传递，这是因为随着偏析的分布变宽，热传递受到抑制。转速对传导热传递的影响最小。在较低的滚动摩擦力值下，床层中的颗粒循环得到增强，因此实现了更好的传热。