Some aspects of bifurcation structure of laminar flow in curved ducts
Some aspects of bifurcation structure of laminar flow in curved ducts
复制标题
弯曲管道层流分叉结构的几个方面
DOI：
10.1017/s0022112092002805
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发表时间：
1992
影响因子：
3.7
通讯作者：
H. Kao
中科院分区：
文献类型：
--
作者：
H. Kao
对弯曲管道中的层流进行了分叉研究。该问题在曲线坐标系中表述，应用正交映射后，通过迭代有限差分法对控制方程进行数值求解。许多计算机运行都是使用从圆形到方形的各种管道横截面进行的，以了解分叉结构随横截面变化的转变，并协调它们之间的差异。此外，提出了一种更简单的技术来在圆管中生成对称四单元解，并提出了一种在完整横截面中稳定四涡结构的方法。
A bifurcation study is made of laminar flow in curved ducts. The problem is formulated in a curvilinear coordinate system, and the governing equations, after orthogonal mapping is applied, are solved numerically by an iterative finite-difference method. Many computer runs were made with various duct cross-sections ranging from a circle to a square, to learn the transition of bifurcation structure with this change in cross-section and to reconcile the differences between them. In addition, a simpler technique is proposed to generate symmetric four-cell solutions in a circular pipe and a means is put forward to stabilize four-vortex structures in a complete cross-section.