Numerical Investigation of Classical and Bypass Transition in Streamwise Corner-flow☆

Numerical Investigation of Classical and Bypass Transition in Streamwise Corner-flow☆
复制标题

流向角流中经典和旁路转变的数值研究â

DOI:
10.1016/j.piutam.2015.03.043
复制
发表时间:
2014
期刊:
Procedia IUTAM
影响因子:
--
通讯作者:
U. Rist
U. Rist
中科院分区:
--
文献类型:
--
作者:
O. Schmidt;U. Rist

文献摘要

参考文献

被引文献

相似文献

本文用直接数值模拟(DNS)方法研究了零压力梯度流向拐角处的层流-湍流转捩。被认为是两个基本的情况下:过渡引起的谐波Tollmien-Schlichting型波内边界层,和旁路过渡所引发的均匀各向同性湍流的自由流。在第一种情况下,我们进一步区分波是对称的,和反对称相对于角平分线的波。结果发现,湍流起源于角在经典的边界层转捩的情况下,对称和反对称扰动。然而,没有这样的偏好,近角区观察旁路过渡。
The laminar-turbulent transition of the flow in a zero-pressure-gradient streamwise corner is investigated by means of direct nu- merical simulation (DNS). Two basic scenarios are considered: transition caused by harmonic Tollmien-Schlichting type waves within the boundary-layer, and bypass transition triggered by homogeneous isotropic turbulence in the free-stream. In the first case, we further distinguish between waves that are symmetric, and waves that are anti-symmetric with respect to the corner bisector. It is found that turbulence originates from the corner in the classical boundary-layer transition scenario for both, symmetric and anti-symmetric perturbations. However, no such preference for the near-corner region is observed in bypass transition.
DOI: --
发表时间: 2010
期刊:
影响因子: --
作者:
F. Alizard;J. Robinet;U. Rist
通讯作者: U. Rist
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
F. Alizard;J. Robinet;F. Guiho
通讯作者: F. Guiho
DOI: --
发表时间: 1982
期刊:
影响因子: --
作者:
V. Kornilov;A. Kharitonov
通讯作者: A. Kharitonov
轴向角部边界区域的粘性可压缩流
DOI: --
发表时间: 1978
期刊:
影响因子: --
作者:
A. Mikhail;K. Ghia
通讯作者: K. Ghia
DOI: --
发表时间: 1981
期刊: Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
影响因子: --
作者:
M. Zamir
通讯作者: M. Zamir