The microscopic structure of mono-disperse granular heaps and sediments of particles on inclined surfaces.
The microscopic structure of mono-disperse granular heaps and sediments of particles on inclined surfaces.
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DOI：
10.1039/c5sm03114a
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发表时间：
2016-03
期刊：
影响因子：
3.4
通讯作者：
N. Topic;F. Schaller;G. Schröder-Turk;T. Pöschel
中科院分区：
文献类型：
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作者：
N. Topic;F. Schaller;G. Schröder-Turk;T. Pöschel
由从有限尺寸的扩展源中落下的单分散颗粒的沉积所产生的颗粒堆的特征在于非均匀的密度场。据推测，这种不均匀性是由于在堆的建设过程中，沉积物的瞬态形状，从而反映了堆的创建历史。通过比较的结构特征的堆与沉积物上的斜面利用闵可夫斯基张量的方法，我们提供了进一步的证据来支持这一假设。此外，对于表面均匀降雨产生的沉积物的情况，我们提供了表面倾斜度与表征局部颗粒环境各向同性的Minkowski测量之间的关系。
Granular heaps of particles created by deposition of mono-disperse particles raining from an extended source of finite size are characterized by a non-homogeneous field of density. It was speculated that this inhomogeneity is due to the transient shape of the sediment during the process of construction of the heap, thus reflecting the history of the creation of the heap. By comparison of structural characteristics of the heap with sediments created on top of inclined planes exploiting the method of Minkowski tensors, we provide further evidence to support this hypothesis. Moreover, for the case of sediments generated by homogeneous rain on surfaces, we provide relationships between the inclination of the surface and the Minkowski measures characterizing the isotropy of local particle environments.