Low-frequency characteristics in the wake of a circular disk

J Yang, M Liu, G Wu, Q Liu, X Zhang - Physics of Fluids, 2015 - pubs.aip.org
Numerical simulations of flow over a circular disk have been performed in this study at Re=
250, 300, 3000, and 10 4. The Fourier spectra analysis of the velocity at different positions …

Numerical study on coherent structure behind a circular disk

J Yang, M Liu, G Wu, W Zhong, X Zhang - Journal of Fluids and Structures, 2014 - Elsevier
A numerical study on the turbulent wake behind a circular disk of an aspect ratio 5 at Re= 10
4 is performed. Three characteristic instabilities are confirmed, including a low-frequency …

DES evaluation of near-wake characteristics in a shallow flow

G Nasif, RM Barron, R Balachandar - Journal of Fluids and Structures, 2014 - Elsevier
Three-dimensional numerical modeling using Detached Eddy Simulation (DES) based on
unsteady Reynolds-Averaged Navier–Stokes (RANS) with the k–ω SST (Shear-Stress …

Extraction and recognization of large-scale structures in the turbulent near wake of a circular disc

W Zhong, M Liu, G Wu, J Yang… - Fluid Dynamics …, 2014 - iopscience.iop.org
Large-scale structures of the turbulent near wake behind a circular disc at Re= 2.2× 10 4
were investigated using large eddy simulation (LES) and multi-plane snapshot proper …

Mixing enhancement of solid-liquid two-phase by coupling double-layer rigid impeller and non-constant chaotic rotating speed

Q Yao, K Yang, J Hu, J Ma, W Yin, H Wang… - Journal of the Brazilian …, 2024 - Springer
Efficient mixing in stirred tanks could be achieved in the presence of isolated mixing regions
using a controlled fluctuation of the impeller rotation rate. In this paper, nine rigid impellers …

Temporal and spatial evolution of cavitating bubbles and coherent structures in a confined submerged jet shear layer

R Zhang, G Sun, Y Wang, S Leguizamón - Engineering Computations, 2021 - emerald.com
Purpose The study aims to display the bubbles' evolution in the shear layer and their
relationship with the pressure fluctuations. Furthermore, the coherent structures of the first …

[图书][B] 搅拌反应器混沌混合强化技术及应用

刘作华, 谷德银, 陶长元 - 2020 - books.google.com
《 攪拌反應器混沌混合強化技術及應用》 系統地論述了攪拌反應器混沌混合強化方法,
重點介紹了攪拌反應器內流體混合過程中的流場結構界面失穩與混沌混合強化機制 …

Transverse forcing on supersonic, spatially evolving mixing layers

J Feng, J Lu, C Shen - Journal of Aerospace Engineering, 2020 - ascelibrary.org
Large eddy simulation (LES) of supersonic, spatially evolving mixing layers is performed. A
transverse perturbation is introduced to force the development of the mixing layer. Special …

[PDF][PDF] 高雷诺数圆盘绕流尾迹特性的大涡模拟研究

谢忱, 朱旻明, 陈义良 - JOURNAL OF UNIVERSITY OF SCIENCE …, 2019 - just.ustc.edu.cn
采用大涡模拟方法对垂直于来流的圆盘(直径为40 mm, 厚度为8 mm) 后尾迹中的湍流特性进行
了研究. 流动雷诺数分别是1× 104, 1× 105 和2.5× 105. 发现当Re> 1× 104 时流场的平均速度 …

Velocity fields and mixing properties of swirling double-concentric jets using two separated circular disks as center bodies

MD Le, CM Hsu, RF Huang - Experimental Thermal and Fluid Science, 2018 - Elsevier
This study investigated the flow features, turbulence characteristics, and mixing properties of
swirling double-concentric jets by using two separated circular disks as the center bodies …