Physics of multiple level hairpin vortex structures in turbulence

来源 :中国科学:物理学、力学、天文学英文版 | 被引量 : 0次 | 上传用户:jeanlife
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
以前的试验性、数字的研究表明了发卡旋涡是过渡边界层的一个基本流动元素。发卡旋涡被相信让腿,颈和一枚戒指出发。基于我们的 DNS 学习,腿和戒指头被不同机制独立产生。腿象一台引擎一样工作由旋转产生低速度地区,创造砍有包围高速度邻居液体的层,和进一步的原因旋涡包围形成通过砍层不稳定性。另外,戒指头被塑造并且从开始把腿与 quasi-streamwise 分开了。与旋涡故障的古典概念相反,我们相信到骚乱的从 laminar 流动的转变是多重水平的一个积聚过程旋涡的结构。第一个水平发卡的旋涡戒指主要是负责的因为积
其他文献
Following deformation, thermally induced shape memory polymers(SMPs) have the ability to recover their original shape with a change in temperature. In this work
In this paper, we present the theory of constructing optimal generalized helical-wave coupling dynamical systems. Applying the helical-wave decomposition method
Under the excitation of elastic waves,local fluid flow in a complex porous medium is a major cause for wave dispersion and attenuation.When the local fluid flow
A hybrid CFD/characteristic method(CCM) was proposed for fast design and evaluation of hypersonic inlet flow with nose bluntness, which targets the combined adv
The triangular differential quadrature method based on a non-uniform grid is proposed in the paper. Explicit expressions of the non-uniform grid point coordinat
An extended one-dimensional stress model for the deposition of multilayer films is built based on the existing stress model by considering the influence of depo
<正>The behaviors and dynamics of bubbles,usually described by the Rayleigh-Plesset(RP)equation and its generalizations,have been an interesting area in fluid d
Selected Mouse IgG of 1 mg/mL as target was fabricated on microarray for 500 sample dots.Label-free and real-time reaction dynamic processes were detected betwe
The configurations of near space hypersonic flying vehicles are considerably different from those of conventional aircrafts.Their configurations are relatively
<正>Ⅲ-ⅤSemiconductors containing a small amount of Bi,known as dilute bismides,have attracted great interest in recent years,due to the large band-gap reducti
期刊