由于EDEM离散元仿真软件基于理论上的接触力学模型，以致在模拟散粒物料实际流动特性的过程中，仿真结果与实际结果不一致。堆积角可以反映物料的流动特性，文中以堆积角作为参考指标，采用正交实验法对煤粉堆积角仿真参数进行校准，以减小煤粉流动特性仿真与实际的偏差。仿真结果表明，采用校准参数后，堆积角仿真结果更接近于实际，煤粉流动特性仿真结果更真实。%Since EDEM discrete element simulation software is based on theoretic contact mechanical model , the sim-ulation result is inconsistent with the actual one when the software is simulating the actual flow characteristics of the bulk materials.The pile angle can reflect flow characteristics of the material , which is taken as the reference index in the paper to adjust the simulation parameter of the coal powder pile angle with the orthogonal experiment method , in order to mini-mize the deviation of the simulation result of the coal powder flow characteristics from the actual one .The simulation result shows that after parameter adjustment , the simulation result of the pile angle and coal powder flow characteristic is close to the actual ones.
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