Numerical Simulation of Viscoplastic Fluid Flows Through an Axisymmetric Contraction
Numerical Simulation of Viscoplastic Fluid Flows Through an Axisymmetric Contraction
复制标题
通过轴对称收缩的粘塑性流体流动的数值模拟
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
J. Piau
中科院分区：
文献类型：
--
作者：
P. Jay;A. Magnin;J. Piau
本文研究了粘塑性流体通过突然的圆锥形轴对称收缩的流动。有限元数值模拟使用双粘性近似。惯性被忽略了。屈服应力的影响进行了分析，是那些剪切变稀，收缩角，和收缩比。给出了与这些参数有关的压力损失、流动的详细结构（如刚性静区和动区）以及旋涡。并与实验室的实验结果进行了比较
Flows of viscoplastic fluids through sudden, conical axisymmetric contraction are studied. A finite-element numerical simulation is performed using a biviscosity approximation. Inertia is neglected. The effects of yield stress are analyzed, as are those of shear-thinning, contraction angle, and contraction ratio. The pressure losses, detailed structure of the flow such as the rigid static and moving zones, and the vortex are given in relation to these parameters. Consistent comparisons are also made with the experimental results obtained in the laboratory