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Journal articles on the topic 'Flow between two cylinders'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Murad, A., and SK Sen. "Stokes Flow between Two Cylinders." Journal of Bangladesh Academy of Sciences 36, no. 1 (2012): 123–35. http://dx.doi.org/10.3329/jbas.v36i1.10928.

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The two-dimensional slow viscous fluid motion between two co-axial circular cylinders showed the inner cylinder is shear-free and the outer one is rigid. The flow is due to the presence of a line source and a line sink of equal strength on the outer cylinder. The stream function for the flow in the annular region is established. The hydrodynamic force on the inner shear-free cylinder has been evaluated. Some numerical values for the force have been presented in a table and compared with corresponding known values where both inner and outer cylinders are rigid. DOI: http://dx.doi.org/10.3329/jb

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2

Renardy, Yuriko, and Daniel D. Joseph. "Couette flow of two fluids between concentric cylinders." Journal of Fluid Mechanics 150 (January 1985): 381–94. http://dx.doi.org/10.1017/s0022112085000179.

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We consider the flow of two immiscible fluids lying between concentric cylinders when the outer cylinder is fixed and the inner one rotates. The interface is assumed to be concentric with the cylinders, and gravitational effects are neglected. We present a numerical study of the effect of different viscosities, different densities and surface tension on the linear stability of the Couette flow. Our results indicate that, with surface tension, a thin layer of the less-viscous fluid next to either cylinder is linearly stable and that it is possible to have stability with the less dense fluid lyi

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3

Zhao, Ming, and Liang Cheng. "Two-dimensional numerical study of vortex shedding regimes of oscillatory flow past two circular cylinders in side-by-side and tandem arrangements at low Reynolds numbers." Journal of Fluid Mechanics 751 (June 16, 2014): 1–37. http://dx.doi.org/10.1017/jfm.2014.268.

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AbstractOscillatory flow past two circular cylinders in side-by-side and tandem arrangements at low Reynolds numbers is simulated numerically by solving the two-dimensional Navier–Stokes (NS) equations using a finite-element method (FEM). The aim of this study is to identify the flow regimes of the two-cylinder system at different gap arrangements and Keulegan–Carpenter numbers (KC). Simulations are conducted at seven gap ratios $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}

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4

Pourjafar, M., and A. Salehi-Shabestari. "Unsteady Helical Flow of Giesekus Viscoelastic Fluid between Two Concentric Cylinders." Nihon Reoroji Gakkaishi 42, no. 5 (2015): 297–307. http://dx.doi.org/10.1678/rheology.42.297.

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5

UMEDA, Shinzaburo, and Wen-Jei YANG. "Flow visualization between two rectangular cylinders." Journal of the Visualization Society of Japan 18, Supplement1 (1998): 161–64. http://dx.doi.org/10.3154/jvs.18.supplement1_161.

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6

Alam, Md Mahbub, Sangil Kim, and Dilip Kumar Maiti. "Flow interference between two tripped cylinders." Wind and Structures 23, no. 2 (2016): 109–25. http://dx.doi.org/10.12989/was.2016.23.2.109.

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7

Aydin, Neslihan, Alper Ozalp, and Irfan Karagoz. "Numerical investigation of heat and flow characteristics in a laminar flow past two tandem cylinders." Thermal Science 25, no. 4 Part A (2021): 2807–18. http://dx.doi.org/10.2298/tsci201119175a.

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Heat and flow characteristics were investigated numerically for a laminar stream past two tandem circular cylinders placed in a channel. The blockage ratios (? = D/H) were chosen to be 0.6, 0.7, and 0.8, respectively, and the gap between the cylinders was varied proportionally to the cylinder diameter as g = 0.2D, 0.7D, 1.5D, and 4D at a low Reynolds number (Re = 40). The effects of the blockage ratio, as well as the gap between two cylinders on heat and flow features were examined in detail. Shear stresses, dimensionless static pressure, heat transfer coefficient, and separation points from t

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8

Jiang, Ren-Jie. "Flow-induced vibrations of two tandem cylinders in a channel." Thermal Science 16, no. 5 (2012): 1377–81. http://dx.doi.org/10.2298/tsci1205377j.

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We numerically studied flow-induced vibrations of two tandem cylinders in transverse direction between two parallel walls. The effect of the horizontal separation between two cylinders, ranging from 1.1 to 10, on the motions of the cylinders and the flow structures were investigated and a variety of periodic and non-periodic vibration regimes were observed. The results show that when two cylinders are placed in close proximity to each other, compared with the case of an isolated cylinder, the gap flow plays an important role. As the separation ratio is increased, the fluid-structure interactio

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9

Hsu, Li-Chieh, and Jian-Zhi Ye. "Numerical Study of Flow Patterns in a Tandem Array Cylinder System." International Journal of Applied Mechanics 07, no. 03 (2015): 1550034. http://dx.doi.org/10.1142/s1758825115500349.

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The spectral element method, a direct numerical technique, is used to study the behavior of flow past two cylinders in tandem array. A control cylinder is employed in front of the main cylinder to study the drag reduction performance and flow patterns. Three major flow patterns are found, including single cylinder vortex shedding, two cylinders vortex shedding and suppression. The flow patterns are affected by the distance between two cylinders, Reynolds number and the diameter ratios of cylinders. In a bistable regime, when there is a critical distance between cylinders, drag is reduced drama

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10

Ho, C. J., G. N. Sou, and Chi-Ming Lai. "Transient Heat Transfer Between Two Horizontal Pipelines in a Heat Tracing Enclosure." Energies 12, no. 8 (2019): 1440. http://dx.doi.org/10.3390/en12081440.

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In this study, a numerical simulation of natural convection between two horizontal differentially heated pipelines inside a circular air-filled enclosure is performed using the finite difference method. The relevant parameters of the problem are the inclinations of the two cylinders (positioned vertically in this study, with the cold cylinder above the hot cylinder), the distance between cylinders and the Rayleigh number. The results show that transient irregular fluctuations in the flow field and heat transfer occur when the Rayleigh number increases or the distance between cylinders decrease

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11

Ota, Terukazu, and Hideya Nishiyama. "Flow Around Two Elliptic Cylinders in Tandem Arrangement." Journal of Fluids Engineering 108, no. 1 (1986): 98–103. http://dx.doi.org/10.1115/1.3242551.

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Flow around two elliptic cylinders in tandem arrangement was experimentally investigated through measurements of the surface static pressure distribution and estimations of the flow parameters such as the drag, lift and moment coefficients. The elliptic cylinders examined had an axis ratio of 1:3 and they were aranged in tandem with an identical angle of attack. The angle of attack ranged from 0 to 90 deg and the nondimensional cylinder spacing l/c from 1.03 to 4.0, where l denotes the distance between the cylinder centers and c is the major axis. It has been found that the flow characteristic

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12

Sharipov, Felix M., and Gilberto M. Kremer. "Nonlinear Couette flow between two rotating cylinders." Transport Theory and Statistical Physics 25, no. 2 (1996): 217–29. http://dx.doi.org/10.1080/00411459608204837.

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13

Zhao, Yu, and M. Keith Sharp. "Stability of Elliptical Cylinders in Two-Dimensional Channel Flow." Journal of Biomechanical Engineering 122, no. 5 (2000): 493–97. http://dx.doi.org/10.1115/1.1289990.

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The flow around rigid cylinders of elliptical cross section placed transverse to Poiseuille flow between parallel plates was simulated to investigate issues related to the tumbling of red blood cells and other particles of moderate aspect ratio in the similar flow in a Field Flow Fractionation (FFF) channel. The torque and transverse force on the cylinder were calculated with the cylinder freely translating, but prevented from rotating, in the flow. The aspect ratios (long axis to short axis) of the elliptical cylinders were 2, 3, 4, and 5. The cylinder was placed transversely at locations of

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14

Ilin, Konstantin, and Andrey Morgulis. "Instability of an inviscid flow between porous cylinders with radial flow." Journal of Fluid Mechanics 730 (July 30, 2013): 364–78. http://dx.doi.org/10.1017/jfm.2013.357.

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AbstractThe stability of a two-dimensional inviscid flow in an annulus between two permeable cylinders is examined. The basic flow is irrotational, and both radial and azimuthal components of the velocity are non-zero. The direction of the radial flow can be from the inner cylinder to the outer one (the diverging flow) or from the outer cylinder to the inner one (the converging flow). It is shown that, independent of the direction of the radial flow, the basic flow is unstable to small two-dimensional perturbations provided that the ratio of the azimuthal component of the velocity to the radia

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15

Zhao, Ming, and Lin Lu. "Numerical simulation of flow past two circular cylinders in cruciform arrangement." Journal of Fluid Mechanics 848 (June 13, 2018): 1013–39. http://dx.doi.org/10.1017/jfm.2018.380.

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Flow past two circular cylinders in cruciform arrangement is simulated by direct numerical simulations for Reynolds numbers ranging from 100 to 500. The study is aimed at investigating the local flow pattern near the gap between the two cylinders, the global vortex shedding flow in the wake of the cylinders and their effects on the force coefficients of the two cylinders. The three identified local flow patterns near the gap: trail vortex (TV), necklace vortex (NV) and vortex shedding in the gap (SG) agree with those found by flow visualization in experimental studies. As for the global wake f

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16

Boyle, M. T., and L. S. Langston. "Asymmetrical Boundary Layer Separation at the Base of a Two Cylinder Geometry." Journal of Fluids Engineering 111, no. 4 (1989): 443–48. http://dx.doi.org/10.1115/1.3243666.

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This paper reports on the experimental description of the three-dimensional horseshoe vortex system occurring at the base of two cylinders mounted side by side on an endwall. The spacing between the two cylinders is adjusted to generate a family of viscous flows. Flow visualization performed in a water tunnel provides a qualitative understanding of the flow over a range of flow variables. A detailed wind tunnel experiment, provides a quantitative description of the flow at a single test condition. The flow is described by the use of a five-hole pressure probe and by cylinder and endwall surfac

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17

Ren, Ling, and De Hong Xia. "Instability of Slip Flow between Two Concentric Cylinders." Applied Mechanics and Materials 117-119 (October 2011): 588–93. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.588.

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The linear stability of flows confined between two concentric rotating cylinders with wall slip is examined. The curves of marginal stability in the plane of the angular velocities at the walls are obtained as a function of slip coefficient, showing the stabilizing effect of slip on the flow stability. The eigenfunction for the first mode at the onset of instability and the corresponding cell pattern are obtained for different slip coefficients. It is found that the number of cell pattern in the radial direction increases with increasing slip coefficients.

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18

GASKELL, P. H., M. D. SAVAGE, and H. M. THOMPSON. "Stagnation–saddle points and flow patterns in Stokes flow between contra-rotating cylinders." Journal of Fluid Mechanics 370 (September 10, 1998): 221–47. http://dx.doi.org/10.1017/s0022112098002031.

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The steady flow is considered of a Newtonian fluid, of viscosity μ, between contra-rotating cylinders with peripheral speeds U1 and U2. The two-dimensional velocity field is determined correct to O(H0/2R)1/2, where 2H0 is the minimum separation of the cylinders and R an ‘averaged’ cylinder radius. For flooded/moderately starved inlets there are two stagnation–saddle points, located symmetrically about the nip, and separated by quasi-unidirectional flow. These stagnation–saddle points are shown to divide the gap in the ratio U1[ratio ]U2 and arise at [mid ]X[mid ]=A where the semi-gap thickness

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19

Griffith, Martin D., David Lo Jacono, John Sheridan, and Justin S. Leontini. "Flow-induced vibration of two cylinders in tandem and staggered arrangements." Journal of Fluid Mechanics 833 (November 2, 2017): 98–130. http://dx.doi.org/10.1017/jfm.2017.673.

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A numerical study of the flow-induced vibration of two elastically mounted cylinders in tandem and staggered arrangements at Reynolds number $Re=200$ is presented. The cylinder centres are set at a streamwise distance of 1.5 cylinder diameters, placing the rear cylinder in the near-wake region of the front cylinder for the tandem arrangement. The cross-stream or lateral offset is varied between 0 and 5 cylinder diameters. The two cylinders are identical, with the same elastic mounting, and constrained to oscillate only in the cross-flow direction. The variation of flow behaviours is examined f

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20

Zhang, Wei, Xiaojun Li, and Zuchao Zhu. "Quantification of wake unsteadiness for low-Re flow across two staggered cylinders." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 19-20 (2019): 6892–909. http://dx.doi.org/10.1177/0954406219866478.

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This work performs a numerical investigation on the two-dimensional flow across two circular cylinders in staggered arrangement at Re = 100. The seaparting distances between the centers of the cylinders are D/ d = 4–10 with Δ D/ d = 2 and T/ d = 0.0–2.0 with Δ T/ d = 0.5 in the streamwise and transverse directions, respectively, in which d is the cylinder diameter. Although the low- Re flow across staggered cylinders has been studied in a number of works, the authors mainly concerned about the identification and transition of various flow patterns. In this work, our objective is to quantitativ

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21

Hotta, Shusaku, Xu Qiang, Satoshi Someya, and Koji Okamoto. "ICONE19-43958 Experimental investigation of flow-induced vibration interference between two tandem circular cylinders." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2011.19 (2011): _ICONE1943. http://dx.doi.org/10.1299/jsmeicone.2011.19._icone1943_356.

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22

Zobeyer, Hasan, Abul B. M. Baki, and Saika Nowshin Nowrin. "Interactions between Tandem Cylinders in an Open Channel: Impact on Mean and Turbulent Flow Characteristics." Water 13, no. 13 (2021): 1718. http://dx.doi.org/10.3390/w13131718.

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The flow hydrodynamics around a single cylinder differ significantly from the flow fields around two cylinders in a tandem or side-by-side arrangement. In this study, the experimental results on the mean and turbulence characteristics of flow generated by a pair of cylinders placed in tandem in an open-channel flume are presented. An acoustic Doppler velocimeter (ADV) was used to measure the instantaneous three-dimensional velocity components. This study investigated the effect of cylinder spacing at 3D, 6D, and 9D (center to center) distances on the mean and turbulent flow profiles and the di

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23

ALAM, Md MAHBUB, Y. ZHOU, and X. W. WANG. "The wake of two side-by-side square cylinders." Journal of Fluid Mechanics 669 (January 26, 2011): 432–71. http://dx.doi.org/10.1017/s0022112010005288.

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Aerodynamic interference between two cylinders involves most of the generic flow features associated with multiple structures, thus providing an excellent model for gaining physical insight into the wake of multiple cylindrical structures. This work aims to provide an experimental systematic study of the flow behind two side-by-side square cylinders. The square cylinder is a representative model for bluff bodies with sharp corners, characterized by a fixed flow separation point, which are distinct from those of continuous curvature with oscillating separation points, typically represented by t

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24

Wang, Yong Tao, Zhong Min Yan, and Hui Min Wang. "Lift Coefficients and Pressure Distribution Acting on Two Tandem Cylinders of Different Diameters." Advanced Materials Research 886 (January 2014): 417–21. http://dx.doi.org/10.4028/www.scientific.net/amr.886.417.

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Flow characteristics of two different diameters cylinders in a tandem arrangement were investigated numerically in a uniform flow. The diameter of the downstream main cylinder was kept constant, and the diameter ratio between the upstream control cylinder and the downstream one was varied from 0.1 to 1.0. The studied Reynolds number based on the diameter of the downstream main cylinder were 100 and 150. The gap between the control cylinder and the main cylinder ranged from 0.1 to 4.0 times the diameter of the main cylinder. It is concluded that the gap ratio and the diameter ratio between the

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25

Meena, S., and Prem Kumar Kandaswamy. "The Hydromagnetic Flow between Two Rotating Eccentric Cylinders." International Journal of Fluid Mechanics Research 26, no. 5-6 (1999): 597–617. http://dx.doi.org/10.1615/interjfluidmechres.v26.i5-6.50.

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26

Meena, S., and Prem Kumar Kandaswamy. "The Hydromagnetic Flow between Two Rotating Eccentric Cylinders." International Journal of Fluid Mechanics Research 29, no. 5 (2002): 18. http://dx.doi.org/10.1615/interjfluidmechres.v29.i5.60.

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27

DASH, SUNIL MANOHAR, and THONG-SEE LEE. "IMPULSIVELY STARTED FLOW TOPOLOGY AROUND TANDEM ARRANGEMENT OF TWO SQUARE CYLINDER AT INCIDENCE." International Journal of Modern Physics: Conference Series 19 (January 2012): 100–108. http://dx.doi.org/10.1142/s201019451200863x.

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Numerical study of impulsively started flow over two tandem square cylinders where former cylinder is rotated at angles (0-45deg) to main stream flow direction keeping later one inline to flow stream with a separation of twice the side length of square prism between the centers of cylinders is performed using FVM code solver FLUENT 6.3.26. Temporal developments of streamlines around cylinders are studied for laminar flow regime ( Re = 100). Flow pattern formed are categories into Type-1, Type-2, Type-3 & Type-4 as per vortices growth at corresponding angle of incidence which are novel resu

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28

Zhang, Hua, and Guan Nan Xi. "Mechanism of Heat Transfer Enhancement due to Tandem Two Cylinders in Unsteady Flow." Applied Mechanics and Materials 201-202 (October 2012): 729–32. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.729.

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A two-dimensional numerical computation was carried out for two cylinders in tandem changing unsteady flow regime. Mechanisms of heat transfer enhancement due to tandem two cylinders in unsteady flow were discussed based on the obtained flow and thermal fields. The simulation result shows that the center distance of two cylinders is the main factor of heat transfer enhancement. It also shows that the wake of the upstream cylinder acts periodically the near wall of the downstream cylinder and the tip of vortices plays an important role on the leading edge of the downstream cylinder. Base on the

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29

Wang, P., C. W. Wong, Y. Zhou, and W. Xu. "Axial-flow-induced vibration of an elastic cylinder placed between two cylinders." Journal of Fluids and Structures 106 (October 2021): 103371. http://dx.doi.org/10.1016/j.jfluidstructs.2021.103371.

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30

Adeeb, Ehsan, Basharat Ali Haider, and Chang Hyun Sohn. "Influence of rounded corners on flow interference between two tandem cylinders using FVM and IB-LBM." International Journal of Numerical Methods for Heat & Fluid Flow 28, no. 7 (2018): 1648–63. http://dx.doi.org/10.1108/hff-08-2017-0319.

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Purpose The purpose of this study is to numerically investigate the influence of corner radius on the flow around two square cylinders in tandem arrangements at a Reynolds number of 100. Design/methodology/approach Six models of square cylinders with corner radii R/D = 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5 (where R denotes the corner radius and D denotes the characteristic dimension of the body) were studied using an immersed boundary-lattice Boltzmann method, and the results were compared with those obtained using a two-dimensional unsteady finite volume method. The cylinders were mounted in a tand

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31

HU, J. C., and Y. ZHOU. "Flow structure behind two staggered circular cylinders. Part 1. Downstream evolution and classification." Journal of Fluid Mechanics 607 (June 30, 2008): 51–80. http://dx.doi.org/10.1017/s0022112008001808.

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Flow structures, Strouhal numbers and their downstream evolutions in the wake of two-staggered circular cylinders are investigated at Re=7000 using hot-wire, flow-visualization and particle-image velocimetry techniques. The cylinder centre-to-centre pitch, P, ranges from 1.2d to 4.0d (d is the cylinder diameter) and the angle (α) between the incident flow and the line through the cylinder centres is 0° ~ 90°. Four distinct flow structures are identified at x/d ≥ 10 (x is the downstream distance from the mid-point between the cylinders), i.e. two single-street modes (S-I and S-II) and two twin-

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32

Kim, H. J., and P. A. Durbin. "Investigation of the flow between a pair of circular cylinders in the flopping regime." Journal of Fluid Mechanics 196 (November 1988): 431–48. http://dx.doi.org/10.1017/s0022112088002769.

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The wakes of a pair of circular cylinders are grossly unsteady when the cylinders are separated in a direction normal to the approaching flow by less than one cylinder diameter. The wakes flop randomly between two asymmetric states. The time-scale for the flopping is several orders of magnitude longer than the timescale of vortex shedding, and also several orders of magnitude longer than the timescale for instability of the separating shear layers. When a splitter plate is positioned suitably on the centreline of the cylinders, the flopping can be stopped and the flow made to assume either of

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33

Bao, Zhenzhong, Guoliang Qin, Wenqiang He, and Yazhou Wang. "Spectral Element Numerical Investigation of Flow between Three Cylinders in an Equilateral-Triangular Arrangement with Different Spacing Distances." Shock and Vibration 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/6358949.

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Two-dimensional incompressible Navier-Stokes equations are numerically solved using the high resolution spectral element method at Reynolds number 200. The flow between three cylinders in an equilateral-triangular arrangement is investigated. The center-to-center spacing distance ratio between two circular cylinders is varied from 1.5 to 12. Present numerical results show that the flow patterns and force characteristics are the result of the combined effects of Reynolds number, spacing distance, configuration arrangement, and incident angle. For the small spacing distance ratio of 1.5, the wel

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34

Akar, Mustafa Atakan, Burcu Oguz, Huseyin Akilli, and Besir Sahin. "Flow behavior downstream of two side-by-side circular cylinders in shallow water." Canadian Journal of Physics 94, no. 10 (2016): 975–81. http://dx.doi.org/10.1139/cjp-2014-0141.

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Investigations of bistable flow structure past a pair of cylinders positioned side-by-side in shallow water is conducted experimentally applying dye observation and the particle image velocimetry (PIV) method. For the gap ratio of G/D = 1.25, the jet-like flow between cylinders deflects asymmetrical flow structures forming a large-scale wake as well as a small-scale wake downstream of cylinders. The small vortices around the right cylinder get closer to each other forming a larger vortex in the large-scale wake region, which leads the jet-like flow to changeover side to side. The small frequen

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Tong, Feifei, Liang Cheng, and Ming Zhao. "Numerical simulations of steady flow past two cylinders in staggered arrangements." Journal of Fluid Mechanics 765 (January 16, 2015): 114–49. http://dx.doi.org/10.1017/jfm.2014.708.

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AbstractThis paper presents a numerical study on steady flow around two identical circular cylinders of various arrangements at a low subcritical Reynolds number ($\mathit{Re}=10^{3}$). The ratio of centre-to-centre pitch distance ($P$) to the diameter of the cylinder ($D$) ranges from 1.5 to 4, and the alignment angle $({\it\alpha})$ between the two cylinders and the direction of the cross-flow varies from 0 to 90°. The detailed flow information obtained from direct numerical simulation allows a comprehensive interpretation of the underlying physics responsible for some interesting flow featu

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36

Ho, C. J., W. S. Chang, and C. C. Wang. "Natural Convection Between Two Horizontal Cylinders in an Adiabatic Circular Enclosure." Journal of Heat Transfer 115, no. 1 (1993): 158–65. http://dx.doi.org/10.1115/1.2910642.

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A numerical study of natural convection flow structure and heat transfer has been undertaken for air around two horizontal, differentially heated cylinders confined to an adiabatic circular enclosure. Parametric simulations were performed to assess the effects of gap width between cylinders as well as the inclination angle of the enclosure with respect to gravity. Results clearly indicate that the fluid flow complexity and heat transfer characteristics of air amid the cylinders and enclosure wall are strongly affected by the Rayleigh number, the inclination angle, and the gap width between the

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37

Wang, Yong Tao, Zhong Min Yan, and Hui Min Wang. "Drag Coefficients Acting on Two Tandem Cylinders of Different Diameters." Advanced Materials Research 886 (January 2014): 413–16. http://dx.doi.org/10.4028/www.scientific.net/amr.886.413.

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The flow past two tandem circular cylinders of different diameters is simulated by using a ﬁnite volume method. The diameter of the downstream main cylinder is kept constant, and the diameter ratio between the upstream control cylinder and the downstream one is varied from 0.1 to 1.0. The Reynolds number based on the diameter of the downstream main cylinder is 100 and 150. The gap between the control cylinder and the main cylinder ranges from 0.1 to 4.0 times the diameter of the main cylinder. It is concluded that the gap ratio and the diameter ratio between the two cylinders have important ef

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38

Rao, A., M. C. Thompson, T. Leweke, and K. Hourigan. "Dynamics and stability of the wake behind tandem cylinders sliding along a wall." Journal of Fluid Mechanics 722 (March 28, 2013): 291–316. http://dx.doi.org/10.1017/jfm.2013.93.

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AbstractThe dynamics and stability of the flow past two cylinders sliding along a wall in a tandem configuration is studied numerically for Reynolds numbers ($\mathit{Re}$) between 20 and 200, and streamwise separation distances between 0.1 and 10 cylinder diameters. For cylinders at close separations, the onset of unsteady two-dimensional flow is delayed to higher $\mathit{Re}$ compared with the case of a single sliding cylinder, while at larger separations, this transition occurs earlier. For Reynolds numbers above the threshold, shedding from both cylinders is periodic and locked. At interm

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39

Watanabe, Keizo, and Takashi Akino. "Drag Reduction in Laminar Flow Between Two Vertical Coaxial Cylinders." Journal of Fluids Engineering 121, no. 3 (1999): 541–47. http://dx.doi.org/10.1115/1.2823502.

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Laminar drag reduction has been shown for the flow of a Newtonian fluid in the space between two vertical coaxial cylinders. Experiments were carried out to measure the torque of a bob with a highly water-repellent wall to clarify the effect of the contact surface of the bob on the flow behavior. The basic material of the highly water-repellent wall is fluorine alkane modified acrylic resin with added hydrophobic silica, and the contact angle of the wall is about 150 degree. The radius rations of the bob were 0.932 and 0.676. Test fluids were Newtonian aqueous solutions of 60, 70, and 80 wt% g

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Merah, Abdelkrim, Ridha Kelaiaia, and Faiza Mokhtari. "A Liquid Metal Flow Between Two Coaxial Cylinders System." Acta Universitatis Sapientiae, Electrical and Mechanical Engineering 11, no. 1 (2019): 79–86. http://dx.doi.org/10.2478/auseme-2019-0007.

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Abstract The Taylor-Couette flow between two rotating coaxial cylinders remains an ideal tool for understanding the mechanism of the transition from laminar to turbulent regime in rotating flow for the scientific community. We present for different Taylor numbers a set of three-dimensional numerical investigations of the stability and transition from Couette flow to Taylor vortex regime of a viscous incompressible fluid (liquid sodium) between two concentric cylinders with the inner one rotating and the outer one at rest. We seek the onset of the first instability and we compare the obtained r

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Song, Li Wei, and Song Ping Wu. "Ghost Cell Immersed Boundary Method for Simulating Flow over Two Circular Cylinders in Tandem Arrangement." Applied Mechanics and Materials 275-277 (January 2013): 478–81. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.478.

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In this work, a ghost cell immersed boundary method is applied to the numerical simulation of a uniform flows over a circular cylinder and two circular cylinders in tandem arrangement. The Navier-Stokes equations are solved using an implicit fractional step method employed on collocated arrangement variables. Immersed boundary method permit the use of structured Cartesian meshes to simulate flows involving complex boundaries. The shedding of vortices and flow interference between two circular cylinders in tandem arrangement are investigated numerically. The calculations are validated against t

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RAO, YONG, YUSHAN NI, and CHAOFENG LIU. "FLOW EFFECT AROUND TWO SQUARE CYLINDERS ARRANGED SIDE BY SIDE USING LATTICE BOLTZMANN METHOD." International Journal of Modern Physics C 19, no. 11 (2008): 1683–94. http://dx.doi.org/10.1142/s0129183108013217.

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The flow around two square cylinders arranged side by side has been investigated through lattice Boltzmann method under different Reynolds numbers and various space ratios (s = d/D, d is the separation distance between two cylinders, D is the characteristic length) from 1.0, 1.1 to 2.7, including 18 space ratios. It is found that the flip-flop regime occurs at small space ratios and the synchronized regime occurs at large space ratios. Wide and narrow wakes at small spacing are formed and intermittently change behind the cylinders, and the biased flow in the gap is bistable. The frequency of v

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WENG, HUEI CHU, CHA'O-KUANG CHEN, and MIN-HSING CHANG. "Stability of micropolar fluid flow between concentric rotating cylinders." Journal of Fluid Mechanics 631 (July 17, 2009): 343–62. http://dx.doi.org/10.1017/s0022112009007150.

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In this study, the theory of micropolar fluids is employed to study the stability problem of flow between two concentric rotating cylinders. The field equations subject to no-slip conditions (non-zero velocity and microrotation velocity components) at the wall surfaces are solved. The analytical solutions of the velocity and microrotation velocity fields as well as the shear stress difference, couple stress and strain rate for basic flow are obtained. The equations with respect to non-axisymmetric disturbances are derived and solved by a direct numerical procedure. It is found that non-zero wa

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Blokhin, A., E. Kruglova, and B. Semisalov. "Nonisothermal Flow of Polymer Fluid between Two Coaxial Cylinders." Журнал вычислительной математики и математической физики, no. 7 (2018): 1149–65. http://dx.doi.org/10.31857/s004446690001462-9.

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Kandaswamy, P., K. Murugesan, and L. Debnath. "On the Hydromagnetic Flow between Two Rotating Eccentric Cylinders." ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 74, no. 1 (1994): 57–61. http://dx.doi.org/10.1002/zamm.19940740116.

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Jie, Peng, Zhu Ke-Qin, and Xi Bao-Shu. "Characteristics of Electrorheological Fluid Flow Between Two Concentric Cylinders." Chinese Physics Letters 17, no. 4 (2000): 298–300. http://dx.doi.org/10.1088/0256-307x/17/4/024.

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Kozubková, Milada, Jana Jablonská, Marian Bojko, František Pochylý, and Simona Fialová. "Multiphase Flow in the Gap Between Two Rotating Cylinders." MATEC Web of Conferences 328 (2020): 02017. http://dx.doi.org/10.1051/matecconf/202032802017.

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The research of liquids composed of two (or more) mutually immiscible components is a new emerging area. These liquids represent new materials, which can be utilized as lubricants, liquid seals or as fluid media in biomechanical devices. The investigation of the problem of immiscible liquids started some years ago and soon it was evident that it will have a great application potential. Recently, there has been an effort to use ferromagnetic or magnetorheological fluids in the construction of dumpers or journal bearings. Their advantage is a significant change in dynamic viscosity depending on

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Batra, R. L., and Bigyani Das. "Flow of a Casson fluid between two rotating cylinders." Fluid Dynamics Research 9, no. 1-3 (1992): 133–41. http://dx.doi.org/10.1016/0169-5983(92)90063-3.

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Hird, L. D., P. F. Siew, and S. Wang. "A numerical solution to the flow between eccentric rotating cylinders with a slotted sleeve." Journal of the Australian Mathematical Society. Series B. Applied Mathematics 41, no. 1 (1999): 129–52. http://dx.doi.org/10.1017/s0334270000011085.

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AbstractThe flow between two eccentric rotating cylinders with a slotted sleeve placed around the inner cylinder is determined numerically using an exponentially fitted finite-volume method. The flow field is determined for various Reynolds numbers, eccentricities and rotational speeds for the cases when the cylinders rotate in the same sense and rotate in opposite senses. The flow field developed when both cylinders rotate in the same sense is characterised, for sufficiently large eccentricity and rotational rate, by two counter-rotating eddies. Only one eddy is observed when the cylinders ro

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Fox, T. A. "Wake Characteristics of Two Circular Cylinders Arranged Perpendicular to Each Other." Journal of Fluids Engineering 113, no. 1 (1991): 45–50. http://dx.doi.org/10.1115/1.2926495.

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The turbulent fluid motion established in the wake of two long, smooth circular cylinders arranged perpendicular to each other has been investigated in a steady, low-turbulence, uniform flow at Reynolds numbers of 2×104 and 2×103 (based on cylinder diameter and freestream velocity). A complex three-dimensional regime was found at the center of the configuration, the precise nature of which is dependent upon the spacing of the cylinders. If the distance between the axis of each cylinder is less than three diameters, the fluid motion in the central near wake is dominated by secondary flows assoc

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