【摘要】 沙堆在冲击作用下的行为和静态沙堆的行为有着很大的不同.通过管道产生“高斯冲击”(速度水平分量成高斯分布)来研究沙堆堆积时的分布情况,发现沙堆自身的稳定性和外界冲击是影响沙堆形状的两大重要因素.给出了沙堆在冲击作用下高度随时间的演化方程.通过该方程,成功地得到了沙堆中心点的高度与外界参量之间的关系,并且提出了一种节能高效的颗粒混合方法.更多还原

【Abstract】 Granular stream was created with Gaussian horizontal velocity distribution,and the granules pile up when falling on the ground.The ideal model predicts the pile should be Gaussian in shape but certain properties of granular matter can deform this ideal accumulation.After taking these factors into account,the pile surface evolution equation was acquired,and the theoretical prediction accorded with the experimental data very well.Finally,a new approach of mixing granular materials was proposed.更多还原