Effect of yield stress on the behavior of rigid zones during the laminar flow of Herschel-Bulkley fluid
Effect of yield stress on the behavior of rigid zones during the laminar flow of Herschel-Bulkley fluid
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DOI：
10.1016/j.aej.2017.01.001
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发表时间：
2017-02
影响因子：
6.8
通讯作者：
H. Taibi;F. Messelmi
中科院分区：
文献类型：
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作者：
H. Taibi;F. Messelmi
本文用数值方法研究了Herschel-Bulkley流体流动过程中出现的刚性区的演化。为了这个目的，我们考虑在一个有界域中的两种流体的层流。研究了屈服应力对刚性区行为的影响，并给出了这些实心区的位置。该数值研究使我们能够绘制并提出一个模型，该模型描述了刚性区的面积和屈服应力之间的关系，以及澄清屈服应力对固体芯部位置的影响。
The paper is devoted to study numerically the evolution of rigid zones that appear during the flow of Herschel-Bulkley fluids. For this aim, we consider a laminar flow of two fluids of this type in a bounded domain. The effect of yield stress on the behavior of rigid zones is examined, and the location of these solid regions is shown. This numerical study allows us to plot and to propose a model that describes the relationship between the area of rigid zones and the yield stress, as well as to clarify the influence of yield stress on the location of solid cores.