Two-dimensional laminar fluid flow and heat transfer in a channel with a built-in heated square cylinder

Turki, Saïd; Abbassi, H.; Nasrallah, Sassi Ben

doi:10.1016/s1290-0729(03)00091-7

Cited by 117 publications

(50 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The present study is restricted for the Prandtl number of 0.7 as the buoyancy effects decrease with increasing Prandtl number (Dhiman et al, 2007(Dhiman et al, , 2008a. The values of the blockage ratios are chosen based upon information available in the literature (Biswas et al, 1990;Turki et al, 2003). Additional computations are also carried out in order to investigate the onset of flow separation at different values of the Reynolds number, Richardson number and blockage ratio.…”

Section: Resultsmentioning

confidence: 99%

“…They reported that the periodicity of flow and asymmetry of the wake can occur at lower Reynolds numbers than that in pure forced convection. Turki et al (2003) numerically investigated the 2-D unsteady mixed convection from a square cylinder (horizontal) for Reynolds number = 120 -200 and Pr = 0.71, but for very low values of the Richardson number (i.e., Ri 0 0.1 = − ) for a fixed blockage ratio of 0.25. The value of the critical Reynolds number (i.e., onset of periodic flow) decreases, while the Strouhal number increases with increasing Richardson number.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wall effects on the cross-buoyancy around a square cylinder in the steady regime

Dhiman¹,

Sharma²,

Kumar³

2012

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-The effects of blockage ratio on the combined free and forced convection from a long heated square obstacle confined in a horizontal channel are investigated in this work. The numerical computations are performed in the steady regime for Reynolds number = 1 -30, Richardson number = 0 -1 for blockage ratios of 0.125 and 0.25 for the fixed Prandtl number of 0.7 (air). The governing equations, along with appropriate boundary conditions, are solved by using a semi-explicit finite volume method implemented on the collocated grid arrangement. The total drag and lift coefficients, local and average Nusselt numbers and the representative streamline, vorticity and isotherm patterns are presented to elucidate the role of blockage ratio on the cross-buoyancy across a confined square cylinder. The asymmetry in the flow and temperature fields decreases with increasing value of the blockage ratio. Similar to forced convection, the total drag coefficient increases with increasing value of the blockage ratio for the fixed values of the Reynolds and Richardson numbers.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wall effects on the cross-buoyancy around a square cylinder in the steady regime

Dhiman¹,

Sharma²,

Kumar³

2012

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Most of the previous heat transfer studies on channel-confined flow across a square cylinder was done for the forced convection case [1][2][3][4][5]. In our earlier study [5], a detailed examination of the effect of channel-confinement on the flow structure and heat transfer from the cylinder at various Reynolds number was done for both constant uniform heat flux and constant cylinder temperature boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of channel-confinement and aiding/opposing buoyancy on the two-dimensional laminar flow and heat transfer across a square cylinder

Sharma

Eswaran

2005

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

“…Recently, Turki et al [12] presented a new numerical study to analyze the unsteady flow field and heat transfer characteristics in a horizontal channel with a built-in heated square cylinder. The results were presented to show the effects of the blockage ratio, the Reynolds and the Richardson numbers on the flow pattern and the heat transfer from the square cylinder.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Characteristics of Nanofuid Flow around an Elliptical Cylinder

Zerradi¹,

Mizani²,

Dezairi³

et al. 2016

Int J Adv Tech

View full text Add to dashboard Cite

This paper presents the results of extensive numerical simulations, based on the control volume method, of 2D nanofluid fluid flow around a heated elliptical cylinder with different incidence angle and aspect ratio. The continuity and momentum equations have been numerically solved using a SIMPLE algorithm. Two types of nanofluids consisting of Al 2 O 3 and CuO nanoparticles dispersed separately in base fluids of water and ethylene glycol mixture 60:40 (by mass), were selected to evaluate their effect on the flow over elliptical cylinder, also their superiority over conventional fluids. The thermo-physical parameters of nanofluid have been estimated using the theory of one fluid phase, a contemporary correlations of thermal conductivity and viscosity of nanofluids have been used in this paper, which are functions of particle volumetric concentration as well as temperature. The results of heat transfer characteristics of nanofluid flow over elliptical cylinder reveled clear improvement comparing with the base fluids. This enhancement is more important in flows with different geometry characteristics of the elliptical cylinder. While the aspect ratio and the incidence angle, exert significant influence on the heat transfer characteristics. The obtained results indicate that the use of aspect ratio 0.83 and incidence angle 79.2° lead to the highest amounts of heat transfer inside the tube.

show abstract

Two-dimensional laminar fluid flow and heat transfer in a channel with a built-in heated square cylinder

Cited by 117 publications

References 14 publications

Wall effects on the cross-buoyancy around a square cylinder in the steady regime

Wall effects on the cross-buoyancy around a square cylinder in the steady regime

Effect of channel-confinement and aiding/opposing buoyancy on the two-dimensional laminar flow and heat transfer across a square cylinder

Heat Transfer Characteristics of Nanofuid Flow around an Elliptical Cylinder

Contact Info

Product

Resources

About