摘要
一个联合基于特征的裂口算法；为分析的一种适应协调技术二维粘滞不可压缩的流动被介绍。方法为速度部件的所有变量与相等顺序的插值功能使用三节点的三角形的元素；压力。联合方法的主要优点是它由联合一个错误评价过程到在溶液坡度与一个大变化在区域产生小元素的一种适应协调技术改进溶液精确性，；同时，在另外的区域的更大的元素。联合过程的表演被经过柱体分析流动的一个测试用例评估，为他们的短暂；不变的流动行为。
A combined characteristic-based split algorithm and all adaptive meshing technique for analyzing two-dimensional viscous incompressible flow are presented. Tile method uses the three-node triangular element with equal-order interpolation functions for all variables of tile velocity components and pressure. The main advantage of the combined nlethod is that it inlproves the sohltion accuracy by coupling an error estinla- tion procedure to an adaptive meshing technique that generates small elements in regions with a large change ill sohmtion gradients, mid at the same time, larger elements in the other regions. The performance of the combined procedure is evaluated by analyzing one test case of the flow past a cylinder, for their transient and steady-state flow behaviors.
基金
Thailand Research Fund(TRF)
关键词
网格技术
有限元素方法
不可压缩流体力学
拆分算法
adaptive mesh, characteristic-based split, finite element method, incompressible flow
