基于变分模态分解的壁湍流拟序结构形态研究

王文康; 潘翀; 王晋军

doi:10.7638/kqdlxxb-2019.0120

欢迎来到能源电力期刊网！

English Version 期刊登录

您当前的位置：

首页 >

文章列表页 >

基于变分模态分解的壁湍流拟序结构形态研究

专栏——湍流结构研究 | 更新时间：2026-05-28

- 基于变分模态分解的壁湍流拟序结构形态研究
- Morphological analysis of coherent structures in wall-bounded turbulence based on variational mode decomposition
- 空气动力学学报 2020年38卷第1期页码：100-106
- 作者机构：
  
  北京航空航天大学教育部流体力学重点实验室,北京,100191
- 作者简介：
  
  王文康(1990-), 男, 博士, 研究方向:湍流边界层拟序结构, 多尺度分析.E-mail:wwk@buaa.edu.cn
  潘翀(1980-), 研究方向:空气动力学.E-mail:panchong@buaa.edu.cn
- 基金信息：
  
  国家自然科学基金（11490552，11672020，11721202）;中央高校基本科研业务费专项资金（YWF-16-JCTD-A-05）
- DOI：10.7638/kqdlxxb-2019.0120
  中图分类号： O357.5+2
- 纸质出版：2020
- 稿件说明：
移动端阅览
王文康, 潘翀, 王晋军. 基于变分模态分解的壁湍流拟序结构形态研究[J]. 空气动力学学报, 2020, 38(1): 100-106.

WANG Wenkang, PAN Chong, WANG Jinjun. Morphological analysis of coherent structures in wall-bounded turbulence based on variational mode decomposition[J]. 2020, 38(1): 100-106.
王文康, 潘翀, 王晋军. 基于变分模态分解的壁湍流拟序结构形态研究[J]. 空气动力学学报, 2020, 38(1): 100-106. DOI： 10.7638/kqdlxxb-2019.0120.

WANG Wenkang, PAN Chong, WANG Jinjun. Morphological analysis of coherent structures in wall-bounded turbulence based on variational mode decomposition[J]. 2020, 38(1): 100-106. DOI： 10.7638/kqdlxxb-2019.0120.

摘要

应用多分量准二维变分模态分解技术，对直接数值模拟的湍流边界层的流向-法向平面进行了分解。通过对从低雷诺数到中等雷诺数（

=400~1750）各个工况的瞬时流场的观察，定性地得到了不同模态所对应的物理结构特征。通过两点相关云图形态和倾斜角度的比较，定量地对比了不同模态对应的拟序结构倾角随法向高度的变化。一阶模态主要对应大尺度扫掠/喷射事件，第二阶模态则对应近壁流向涡结构。两阶模态的拟序结构倾角随法向高度的变化趋势与雷诺数呈弱相关，表明大小尺度模态的几何特征在所研究的雷诺数范围内存在自相似性。

Abstract

The multi-component quasi-bivariate variational mode decomposition technique is applied to decompose the turbulent boundary layer velocity field acquired by direct numerical simulation. By observing the instantaneous flow field at various cases from low to medium Reynolds number (

=400~1750)

the characteristics of the coherent structures corresponding to different modes are qualitatively obtained. By comparing the morphology and inclination angle of the two-point correlation map

the variation of the inclination angle of the coherent structure corresponding to different modes with the normal height is quantitatively compared. The first mode mainly corresponds to large-sca

le sweep/ejection events

while the second mode corresponds to near-wall streamwise vortex structures. The variation trend of the inclination angle of the coherent structure of the modes with the normal height is weakly dependent on Reynolds number

which indicates that the geometric characteristics of large and small scale structures follow certain similarity within the Reynolds number range studied.

关键词

Keywords

references

JIMÉNEZ J. Coherent structures in wall-bounded turbulence[J]. Journal of Fluid Mechanics, 2018, 842:P1.

MATHIS R, HUTCHINS N, MARUSIC I. A predictive inner-outer model for streamwise turbulence statistics in wall-bounded flows[J]. Journal of Fluid Mechanics, 2011, 681:537-566.

WANG J, LEE J, SUNG H J, et al. Inner-outer interactions of large-scale structures in turbulent channel flow[J]. Journal of Fluid Mechanics, 2016, 790:128-157.

ZHANG Y, HU R, ZHENG X, Large-scale coherent structures of suspended dust concentration in the neutral atmospheric surface layer:A large-eddy simulation study[J]. Physics of Fluids, 2018, 30(4):046601.

DUVVURI S, MCKEON B J. Triadic scale interactions in a turbulent boundary layer[J]. Journal of Fluid Mechanics (Rapid), 2015, 767.

ZHANG C, CHERNYSHENKO S I. Quasisteady quasihomogeneous description of the scale interactions in near-wall turbulence[J]. Physical Review Fluids, 2016, 1(1):014401.

WANG W, PAN C, WANG J, Wall-normal variation of spanwise streak spacing in turbulent boundary layer with low-to-moderate Reynolds number[J]. Entropy, 2018, 21(1):24.

HUANG N E, SHEN Z, LONG S R, et al. The empirical mode decomposition and the hilbert spectrum for nonlinear and non-stationary time series analysis[J]. Proceedings:Mathematical, Physical and Engineering Sciences, 1998, 454(1971):903-995.

HUANG Y, BIFERALE L, CALZAVARINI E, et al. Lagrangian single-particle turbulent statistics throughthe Hilbert-Huang transform[J]. Physical Review. E, Statistical, nonlinear, and soft matter physics, 2013, 87(4):041003.

AGOSTINI L, LESCHZINER M, GAITONDE D, Skewness-induced asymmetric modulation of small-scale turbulence by large-scale structures[J]. Physics of Fluids, 2016, 28(1):015110.

CHENG C, LI W P, LOZANO-DURAN A, et al. Identity of attached eddies in turbulent channel flows with bidimensional empirical mode decomposition[J]. Journal of Fluid Mechanics, 2019, 870:1037-1071.

DRAGOMIRETSKIY K, ZOSSO D. Variational mode decomposition[J]. IEEE Transactions on Signal Processing, 2014, 62(3):531-544.

WANG W, PAN C, WANG J. Multi-component variational mode decomposition and its application on wall-bounded turbulence[J]. Experiments in Fluids, 2019, 60(6):95.

WANG W, PAN C, WANG J. Quasi-bivariate variational mode decomposition as a tool of scale analysis in wall-bounded turbulence[J]. Experiments in Fluids, 2018, 59(1):1.

SILLERO J A, JIMÉNEZ J, MOSER R D. Two-point statistics for turbulent boundary layers and channels at Reynolds numbers up to δ + ≈2000[J ] . Physics of Fluids, 2014, 26(10):105109.

DENG S, PAN S, WANG J, et al. On the spatial organization of hairpin packets in a turbulent boundary layer at low-to-moderate Reynolds number[J]. Journal of Fluid Mechanics, 2018, 844:635-668.

HWANG J, SUNG H J. Wall-attached structures of velocity fluctuations in a turbulent boundary layer[J]. Journal of Fluid Mechanics, 2018, 856:958-983.

HWANG Y, BENGANA Y. Self-sustaining process of minimal attached eddies in turbulent channel flow[J]. Journal of Fluid Mechanics, 2016, 795:708-738.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

基于线阵列的湍流边界层壁面脉动压力波数-频率谱模型实验研究

等离子体湍流摩擦减阻研究进展与展望

考虑化学非平衡效应的高温湍流边界层统计特性分析

基于壁面压力谱方法的风力机气动噪声模型

湍流边界层与高温气体效应耦合的直接数值模拟