Convective heat transfer over a heated square porous cylinder in a channel

Wu, Hung‐Wei; Wang, Ren Hung

doi:10.1016/j.ijheatmasstransfer.2009.12.063

Cited by 30 publications

(16 citation statements)

References 17 publications

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“…On the other hand, Nusselt number for solids increased with increase in thermal conductivity ratio. Wu and Wang (2010) numerically studied two-dimensional unsteady forced convection heat transfer with uniform heat generation on the bottom surface of a non-permeable cylinder with an incompressible laminar flow across a porous square cylinder in the middle of a channel. They investigated the effects of Reynolds and Darcy numbers, porosity, and cylinder-to-channel height ratio (B=H) and found that heat transfer increased with increase in Reynolds and Darcy numbers and porosity.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Combined Convection Heat Transfer and Fluid Flow around Circular Cylinder through Rectangular and Trapezoidal Open-Cell Aluminum Foams

Mahdi

Mohammed

Munisamy

et al. 2015

Chemical Engineering Communications

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Combined convection heat transfer and fluid flow around a circular cylinder surface placed in open-fcell aluminum foams and subjected to constant heat flux inside a rectangular, water-filled horizontal channel was numerically and experimentally studied. Two models (rectangular and trapezoidal open-cell aluminum foam shapes) made of 6101-T6 alloy with pore densities of 10 and 40 pores per linear inch (PPI) and 7-9% relative density were employed as test sections. The aluminum foam dimensions were 35.7 Â 35.7 Â 36.85 mm, the Reynolds number range was 60-2000, and the modified Grashof number range was 2 Â 10 2 -2.6 Â 10 7 . Governing equations (continuity, momentum, and energy) were solved using the finite-volume method (FVM). Effects of the porous characteristics of aluminum foams and mixed convection heat transfer parameters on buoyancy force, Nusselt number, friction factor, and pumping power values of the two models were investigated. The results show that high mixed convection occurred with the trapezoidal model. A high average Nusselt number value was obtained at 40PPI in the rectangular model. In the trapezoidal model, average Nusselt number decreased with increased aluminum foam pore density. Friction factor increased slightly with increasing modified Grashof number and decreased with increasing Reynolds number. Pumping power increased with increased pore density of aluminum foam and mixed convection parameters. The comparison shows good agreement between the numerical and experimental work and that the average results produced have an 8.02% deviation in average Nusselt number.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Combined Convection Heat Transfer and Fluid Flow around Circular Cylinder through Rectangular and Trapezoidal Open-Cell Aluminum Foams

Mahdi

Mohammed

Munisamy

et al. 2015

Chemical Engineering Communications

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“…The temperatures along the surface of square porous cylinder were discussed in Wu and Wang's [16] investigation. The heat transfer on the bottom of the heated square porous cylinder is therefore used to discuss all cases.…”

Section: Resultsmentioning

confidence: 99%

“…They showed that the significant heat transfer augmentation could be achieved through the use of multiple emplaced porous blocks. Wu and Wang [16] investigated the unsteady flow and convection heat transfer for a heated square porous cylinder in a channel. They found that the average local Nusselt number increases as Reynolds number increased; in particular, the increase was more obvious at a higher Darcy number.…”

Section: Introductionmentioning

confidence: 99%

Unsteady convection heat transfer for a porous square cylinder varying cylinder-to-channel height ratio

Perng

Wang

et al. 2011

International Journal of Thermal Sciences

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“…A control volume approach presented by Patankar [13] is used to discretize the dimensionless governing equations (1) -(4). The semi-implicit method for pressure-linked equation (SIMPLE) algorithm was used for solving the coupled momentum and continuity equations using the corresponding boundary conditions given in equations (9). The convergence of the sequential iterative solution is obtained when:…”

Section: Solution Methodsmentioning

confidence: 99%

“…The effect of Reynolds and Darcy numbers on the structure of a flow through a porous square cylinder was investigated by Yu et al [8]. Wu and Wang [9] analyzed numerically an unsteady flow and convection heat transfer for a heated square porous cylinder in a channel. The heat transfer through an isolated porous square cylinder maintained at a constant temperature was examined by Dhinakaran and Ponmozhi [10], their results showed that the flow pattern through and around the porous cylinder depends much on the Darcy number of the porous medium.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Fluid Flow Through a Confined Porous Square Cylinder

Guerbaai

Touiker

Meftah

et al. 2019

Acta Universitatis Sapientiae, Electrical and Mechanical Engineering

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A numerical study is performed to analyze steady state forced convection fluid flow through a confined porous square cylinder. The Darcy-Brinkman-Forchheimer model is adopted for the porous region. The finite volume method and the iterative SIMPLE algorithm are used to solve the governing equations. The results obtained are presented for the streamlines, variation of Nusselt number and drag coefficient for the range of conditions as 5 ≤ Re ≤ 40 and 10−2 ≤ Da ≤ 10−6.

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Convective heat transfer over a heated square porous cylinder in a channel

Cited by 30 publications

References 17 publications

Experimental and Numerical Investigation of Combined Convection Heat Transfer and Fluid Flow around Circular Cylinder through Rectangular and Trapezoidal Open-Cell Aluminum Foams

Experimental and Numerical Investigation of Combined Convection Heat Transfer and Fluid Flow around Circular Cylinder through Rectangular and Trapezoidal Open-Cell Aluminum Foams

Unsteady convection heat transfer for a porous square cylinder varying cylinder-to-channel height ratio

Numerical Study of Fluid Flow Through a Confined Porous Square Cylinder

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