×

zbMATH — the first resource for mathematics

Forced-convection heat transfer from tandem square cylinders in cross flow at low Reynolds numbers. (English) Zbl 1369.76010
Summary: This paper presents the results of a numerical study on the flow characteristics and heat transfer over two equal square cylinders in a tandem arrangement. Spacing between the cylinders is five widths of the cylinder and the Reynolds number ranges from 1 to 200, \(\mathrm{Pr}=0.71\). Both steady and unsteady incompressible laminar flow in the 2D regime are performed with a finite volume code based on the SIMPLEC algorithm and non-staggered grid. A study of the effects of spatial resolution and blockage on the results is provided. In this study, the instantaneous and mean streamlines, vorticity and isotherm patterns for different Reynolds numbers are presented and discussed. In addition, the global quantities such as pressure and viscous drag coefficients, RMS lift and drag coefficients, recirculation length, Strouhal number and Nusselt number are determined and discussed for various Reynolds numbers.

MSC:
76B47 Vortex flows for incompressible inviscid fluids
76R05 Forced convection
80A20 Heat and mass transfer, heat flow (MSC2010)
PDF BibTeX XML Cite
Full Text: DOI
References:
[1] Lyn, A laser-Doppler velocimetry study of ensemble-averaged characteristics of the turbulent near wake of a square cylinder, Journal of Fluid Mechanics 304 pp 285– (1995)
[2] Williamson, Three-dimensional wake transition, Journal of Fluid Mechanics 328 pp 345– (1996) · Zbl 0899.76129
[3] Sohankar, Flow over a bluff body from moderate to high Reynolds numbers using large eddy simulation, Computers and Fluids 35 pp 1154– (2006) · Zbl 1177.76165
[4] Tatsutani, Unsteady flow and heat transfer for cylinder pairs in a channel, International Journal of Heat and Mass Transfer 13 pp 3311– (1993)
[5] Valencia, Unsteady flow and heat transfer in a channel with a built-in tandem of rectangular cylinders, Numerical Heat Transfer, Part A 26 pp 613– (1996)
[6] Valencia, Numerical study of self-sustained oscillatory flows and heat transfer in channels with a tandem of transverse vortex generators, Heat and Mass Transfer 33 pp 465– (1998)
[7] Rosales, A numerical simulation of the convective heat transfer in confined channel flow past square cylinders: comparison of inline and offset tandem pairs, International Journal of Heat and Mass Transfer 44 pp 587– (2001) · Zbl 0990.76053
[8] Liu, Observations of hysteresis in flow around two square cylinders in a tandem arrangement, Journal of Wind Energy and Industrial Aerodynamics 90 pp 1019– (2002)
[9] Alam, Suppression of fluid forces acting on two square prisms in a tandem arrangement by passive control flow, Journal of Fluids and Structures 16 pp 1073– (2002)
[10] Yen, Interactions of tandem square cylinders at low Reynolds numbers, Experimental Thermal and Fluid Science 32 pp 927– (2008)
[11] Sohankar, Low-Reynolds-number flow around a square cylinder at incidence: study of blockage, onset of vortex shedding and outlet boundary condition, International Journal for Numerical Methods in Fluids 26 pp 39– (1998) · Zbl 0910.76067
[12] Thompson, Numerical Grid Generation, Foundations and Applications pp 305– (1985) · Zbl 0598.65086
[13] Sharma, Heat and fluid flow across a square cylinder in the two-dimensional laminar flow regime, Numerical Heat Transfer, Part A 45 pp 247– (2004)
[14] Sohankar, Numerical simulation of unsteady low-Reynolds number flow around rectangular cylinders at incidence, Journal of Wind Energy and Industrial Aerodynamics 69 pp 189– (1997)
[15] Sohankar A, Davidson L, Norberg L. Numerical simulation of unsteady flow around a square 2D cylinder. In Proceedings of the 12th Australasian Fluid Mechanics Conference, Bilger RW (ed.). 1995; 517-520.
[16] Robichaux, Two-dimensional Floquet instability of the wake of square cylinder, Physics of Fluids 11 pp 560– (1999) · Zbl 1147.76482
[17] Franke, Numerical calculation of vortex shedding flow past cylinders, Journal of Wind Energy and Industrial Aerodynamics 35 pp 237– (1990)
[18] Shimizu, Fluid forces acting on cylinders of rectangular cross section, Transactions of the Japan Society of Mechanical Engineering B 44 pp 2699– (1978)
[19] Kelkar, Numerical prediction of vortex shedding behind a square cylinder, International Journal for Numerical Methods in Fluids 14 pp 327– (1992) · Zbl 0746.76066
[20] Zdravkovich, Flow Around Circular Cylinders (1997)
[21] Eckert, Distribution of heat transfer coefficient around circular cylinders in cross flow at Reynolds numbers from 20 to 500, Journal of Heat Transfer 74 pp 343– (1952)
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. It attempts to reflect the references listed in the original paper as accurately as possible without claiming the completeness or perfect precision of the matching.