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使用高格式数值模拟腔内亚跨声速流
发表时间：2011-01-15 浏览量：2215 下载量：983
| 全部作者： | 李明军，朱可 |
| 作者单位： | 湘潭大学数学与计算科学学院；中国科学院力学研究所 |
| 摘 要： | 把一阶迎风有限体积格式的高算法重构格式——高迎风有限体积格式（Gao’s upwind finite-volume schemes，GUVS）不可压缩流和可压缩流SIMPLE(semi-implicit press linked equations)算法相结合，数值模拟各种宽深比的亚跨声速腔内流动。利用六阶GUVS在结构和非结构同位网格上模拟不同宽深比亚跨声速腔体流动，获得了较好的数值结果。例如亚声速方腔流动的数值结果与用多重网格技术获得的Benchmark解吻合得非常好；对不同宽深比腔内流动，数值模拟了大尺度旋涡、腔角小尺度旋涡的形成、分岔、破碎和边界层分离等演化情况，表明六阶精度GUVS具有分辨率高、稳定性好的良好性能。 |
| 关 键 词： | 计算流体力学；腔内流动；有限体积格式；SIMPLE算法 |
| Title： | Numerical simulations of subsonic-transonic flows in cavities using Gao’s scheme |
| Author： | LI Mingjun, ZHU Ke |
| Organization： | School of Mathematics and Computational Science, Xiangtan University; Institute of Mechanics, Chinese Academy of Sciences |
| Abstract： | Some subsonic-transonic flows in cavities with different ratio of length to depth are simulated numerically using Gao’s upwind finite-volume schemes (GUVS) coupling with compressible and incompressible SIMPLE (semi-implicit press linked equations) algorithm in this paper, GUVS is product of reconstructing first order upwind finite volume scheme by Gao’s algorithm. Some subsonic-transonic flows in cavities with different ratio of length to depth are simulated numerically using Gao’s sixth-order upwind finite-volume scheme on structured and unstructured collocated grids. Some excellent numerical results are obtained. For example, the numerical results for subsonic flows in rectangle cavity (i.e lid-driven cavity flows) are quite well in agreement with the Benchmark solutions given by Ghia et al. using multigrid technique, flow characteristics of subsonic-transonic flows in cavities with different ratio of length to depth are also presented. Excellent properties of GUVS are proved by analysis and numerical tests. |
| Key words： | computational fluid dynamics; flows in cavities; finite volume scheme; SIMPLE algorithm |
| 发表期数： | 2011年1月第1期 |
| 引用格式： | 李明军，朱可. 使用高格式数值模拟腔内亚跨声速流[J]. 中国科技论文在线精品论文，2011，4（1）：29-36. |
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