摘要
在三维任意贴体非正交曲线坐标系下应用同位网格技术,发展了适于求解复杂流动的压力修正算法,采用速度的协变物理分量为动量方程中速度的求解变量,湍流模型选用标准的κ-ε模型。计算表明,方法具有良好的收敛性、准确性和稳定性,计算值与试验数值吻合良好,而且能预示通道内复杂的流动现象。
In this paper, using the technique of collocated grid, a pressure corrected algorithm for a general curvilinear system is developed to simulate complex flows ,Selecting the velocity components along covariant projections as solving variables in the momentum equations. The standard κ-ε modals is used simulated turbulent flows. The test shows that the convergence, the accuracy and the stability. The numerical results are in reasonably agreement with the available experimental data. The numerical results show the algorithm can predict complex flow phenomena.
出处
《航空计算技术》
2008年第2期14-16,共3页
Aeronautical Computing Technique
关键词
弯曲管道
湍流
数值模拟
curved duct
turbulence
numerical simulation
