Numerical study of flow over periodically deforming circular cylinder

被引：1

作者：

Zheng, Haicheng ^{[1
,2
]}

Shi, Bing ^{[1
]}

Yu, Qian ^{[1
]}

Zhao, Enjin ^{[1
]}

机构：

[1] Ocean Univ China, Coll Engn, Qingdao 266100, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Electromech Engn, Qingdao 266100, Peoples R China

来源：

COMPUTERS & FLUIDS | 2016年 / 136卷

关键词：

Lattice Boltzmann method; Deformation; Vortex pattern; Drag; LATTICE BOLTZMANN METHOD; NONIDEAL GASES; MODELS; SUSPENSIONS; CAPSULES; EQUATION;

D O I：

10.1016/j.compfluid.2016.05.024

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Two-dimensional incompressible fluid flows over a periodically deforming circular cylinder are simulated with lattice Boltzmann method for Reynolds number 200. The periodic deformation is controlled by the ratios of deforming amplitude relative to the cylindrical radius and deforming frequency relative to natural vortex shedding frequency. The flow features are mainly decided by the periodic deformation. So three deforming amplitude ratios (0.05, 0.075, 0.1) are considered and deforming frequency ratios range from 0.75 to 2.0. The vortex structures are divided into three categories and two type transitional structures are observed. The correlation between vortex shedding patterns and periodic deformation is analyzed. In addition, the impact of periodic deformation to drag coefficient is studied. Numerical results show that special deformation can reduce the drag. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：348 / 353

页数：6

共 50 条

[1] Numerical study of cavitation regimes in flow over a circular cylinder
Brandao, Filipe L.
Bhatt, Mrugank
Mahesh, Krishnan
JOURNAL OF FLUID MECHANICS, 2020, 885
[2] Numerical simulation of a flow around an impulsively started radially deforming circular cylinder
Hanchi, S
Askovic, R
Phuoc, LT
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 1999, 29 (05) : 555 - 573
[3] Numerical Study on Uniform-Shear Flow Over a Circular Cylinder
Kang, Sangmo
Choi, Wonho
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B, 2005, 29 (01) : 139 - 150
[4] Numerical Study on Uniform-Shear Flow over a Rotating Circular Cylinder
Kang, Sangmo
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B, 2005, 29 (05) : 577 - 589
[5] VISCOUS SHEAR-FLOW OVER A CIRCULAR CYLINDER-NUMERICAL STUDY
ELREFAEE, MM
ELTAHER, RM
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, 1985, 23 (12) : 1305 - 1316
[6] Numerical study of rectangular spectral collocation method on flow over a circular cylinder
Smith, B.
Laoulache, R.
Heryudono, A. R. H.
Lee, J.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, 2019, 33 (04) : 1731 - 1741
[7] Numerical study of rectangular spectral collocation method on flow over a circular cylinder
B. Smith
R. Laoulache
A. R. H. Heryudono
J. Lee
Journal of Mechanical Science and Technology, 2019, 33 : 1731 - 1741
[8] Numerical study of flow around circular cylinder
Chan, ST
Lam, K
So, RMC
Leung, RCK
FLOW-INDUCED VIBRATION, 2000, : 249 - 255
[9] Numerical studies of flow over a circular cylinder at ReD=3900
Kravchenko, AG
Moin, P
PHYSICS OF FLUIDS, 2000, 12 (02) : 403 - 417
[10] Numerical approach of convective heat transfer for a deforming circular cylinder
Hanchi, S
Askovic, R
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1998, 41 (11) : 1385 - 1396

← 1 2 3 4 5 →