| 基于混合动网格的二维非定常粘性流动数值模拟 |
| |
| 引用本文： | 邓枫,伍贻兆,刘学强.基于混合动网格的二维非定常粘性流动数值模拟[J].南京航空航天大学学报,2007,39(4):444-448. |
| |
| 作者姓名： | 邓枫 伍贻兆 刘学强 |
| |
| 作者单位： | 南京航空航天大学航空宇航学院,南京,210016 |
| |
| 摘 要： | 利用基于Delaunay三角化的动网格方法,在混合网格上求解了带运动边界的二维非定常Navier-Stokes方程。在有限体积法格心格式的基础上,采用带人工耗散项的Jameson中心格式以及双时间步长推进方法对Navier-Stokes方程中的空间项和时间项分别进行了离散。湍流模型为Spalart-Allmaras方程模型。对在跨声速粘性绕流中进行俯仰振动以及后缘摆动的翼型进行了数值模拟,得到了令人满意的结果。
|
| 关 键 词： | 非定常粘性流动 混合动网格 Delaunay三角化 有限体积法 Navier-Stokes方程 |
| 文章编号： | 1005-2615（2007）04-0444-05 |
| 修稿时间： | 2006-06-06 |
Numerical Simulation of Two-Dimensional Unsteady Viscous Flow Based on Hybrid Dynamic Grids |
| |
| Deng Feng,Wu Yizhao,Liu Xueqiang.Numerical Simulation of Two-Dimensional Unsteady Viscous Flow Based on Hybrid Dynamic Grids[J].Journal of Nanjing University of Aeronautics & Astronautics,2007,39(4):444-448. |
| |
| Authors: | Deng Feng Wu Yizhao Liu Xueqiang |
| |
| Abstract: | Two-dimensional time-dependent Navier-Stokes equations with moving boundary are solved on hybrid grids by a fast dynamic grid deformation based on delaunay graph mapping.The spatial discretization of the Navier-Stokes equations is performed using the Jameson central scheme with artificial dissipation, and time integration is implemented by the dual time-stepping approach.The Spalart-Allmaras one-equation turbulence model is employed.An airfoil oscillating in pitch and an airfoil with an oscillating flap on the transonic viscous flow are simulated.Results are in agreement with the experimental data. |
| |
| Keywords: | unsteady viscous flow hybrid dynamic grids Delaunay graph finite volume method Navier-Stokes equation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
