Calculation of unsteady flow past a cube on the wall of a narrow channel using URANS and the Spalart–Allmaras turbulence model
Calculation of unsteady flow past a cube on the wall of a narrow channel using URANS and the Spalart–Allmaras turbulence model
复制标题
使用 URANS 和 Spalart-Allmaras 湍流模型计算经过狭窄通道壁上的立方体的不稳定流动
DOI：
10.1007/s10891-009-0227-4
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发表时间：
2009
影响因子：
0.6
通讯作者：
D. Lysenko
中科院分区：
文献类型：
--
作者：
S. Isaev;D. Lysenko
本文介绍了在传统的求解非定常雷诺平均Navier-Stokes方程（URANS）的方法和半经验Spalart-Allmaras湍流模型（带旋转修正）的框架内，对下壁有立方体的通道（特征雷诺数Re = 40，000）中充分发展的湍流流动进行数值模拟的结果。通过对局部流动特性和整体流动特性的数值模拟结果与Martinuzzi实验数据的详细对比分析表明，立方体绕流的自振荡状态是马蹄涡旋臂振荡与后拱脱体涡结构振荡的叠加。使用快速傅立叶变换，它已被发现的振荡是在纵向和垂直方向上的双峰字符，而在横向方向上，他们是一个单峰字符。
The results of numerical simulation of fully developed turbulent flow in a channel with the cube on the lower wall (for the characteristic Reynolds number Re = 40,000) within the framework of the traditional approach to the solution of unsteady Reynolds-averaged Navier–Stokes equations (URANS) in combination with the semiempirical Spalart–Allmaras turbulence model (with a correction for rotation) have been presented. A detailed comparative analysis of the results of numerical simulation of local and integral flow characteristics and the Martinuzzi experimental data has shown that the self-oscillating regime of flow past the cube is a superposition of oscillations of the arms of a horseshoe vortex and the rear arched and detached vortex structures. Using fast Fourier transformation, it has been found that the oscillations are of a bimodal character in the longitudinal and vertical directions, whereas in the transverse direction, they are of a unimodal character.
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影响因子：
56.9
作者：
KLUENDER, KR;DIEHL, RL;KILLEEN, PR
通讯作者：
KILLEEN, PR