Mixed convection in a lid driven square cavity with an isothermally heated square blockage inside

Islam, Akand W.; Sharif, M. A. R.; Carlson, Eric S.

doi:10.1016/j.ijheatmasstransfer.2012.05.032

Cited by 115 publications

(46 citation statements)

References 18 publications

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“…Fig. 2 illustrates a comparison of the isotherms and streamlines with the results reported by Islam et al [2] and the results reported by Khanafer and Aithal. [3] at Reynolds number (ܴ݁ = 100) .…”

Section: Validationsmentioning

confidence: 62%

“…Khanafer and Aithal [3] Islam et al [2] Present study streamlines and the isotherms for pure fluid and nanofluid are shown by dashed line and solid line respectively. We can see in Fig.…”

Section: Vertical Displacement Of Triangular Blocksmentioning

confidence: 73%

“…The results showed that the average Nusselt number increases with an increase in the radius of the cylinder for various Richardson numbers and the optimal heat transfer results are obtained when placing the cylinder near the bottom wall. Islam et al [2] performed a numerical study on a liddriven cavity with a heated square blockage. They found that size, location and Richardson number of the heater eccentricities affect the average Nusselt number of heater.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Investigation of Mixed Convection Heat Transfer of Nanofluid in a Lid Driven Square Cavity with Three Triangular Heating Blocks

Boulahia¹,

Wakif²,

Sehaqui³

2016

IJCA

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The present investigation addressed mixed convection heat transfer of nanofluid in a lid driven square cavity with three triangular heating blocks. Finite volume discretization method with SIMPLE algorithm is employed for solving the twodimensional Navier-Stokes and energy balance equations. The method used is validated against previous works. Two cases were considered depending on the position of three triangular heating blocks. Effects of pertinent parameters such as; position of triangular heating blocks, the Richardson number (0.1 ≤ ܴ݅ ≤ 100), the Prandtl number of the pure water ‫ݎܲ(‬ = 6.2) and the volume fraction of nanoparticles (0 ≤ ߮ ≤ 0.05) on the flow and Nusselt number are investigated. The results of this study illustrate that, by reducing Richardson number and increasing the volume fraction of nanoparticles, the average Nusselt number increases. It is also found that there is an optimal position of triangular heating blocks where the heat transfer rate is maximized.

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Section: Validationsmentioning

confidence: 62%

“…Khanafer and Aithal [3] Islam et al [2] Present study streamlines and the isotherms for pure fluid and nanofluid are shown by dashed line and solid line respectively. We can see in Fig.…”

Section: Vertical Displacement Of Triangular Blocksmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Investigation of Mixed Convection Heat Transfer of Nanofluid in a Lid Driven Square Cavity with Three Triangular Heating Blocks

Boulahia¹,

Wakif²,

Sehaqui³

2016

IJCA

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“…Islam et al [16] numerically examined laminar mixed convection in a lid-driven square cavity having a square internal blockage. In their experiment, the blockage was maintained at a hot temperature and four surfaces of the cavity (including the lid) were maintained at a cold temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Morshed et al [17] did an extension for Islam et al's [16] study with two isothermally heated square internal blockages. Their cavity and conditions were similar to that of Islam et al [16].…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of double diffusive buoyancy forces induced natural convection in a cavity partially heated and cooled from sidewalls

Nikbakhti

Khodakhah

2016

Engineering Science and Technology, an International Journal

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A B S T R A C TThis paper deals with a numerical investigation of double-diffusive natural convective heat and mass transfer in a cavity filled with Newtonian fluid. The active parts of two vertical walls of the cavity are maintained at fixed but different temperatures and concentrations, while the other two walls, as well as inactive areas of the sidewalls, are considered to be adiabatic and impermeable to mass transfer. The length of the thermally active part equals half of the height. The non-dimensional forms of governing transport equations that describe double-diffusive natural convection for two-dimensional incompressible flow are functions of temperature or energy, concentration, vorticity, and stream-function. The coupled differential equations are discretized via FDM (Finite Difference Method). The Successive-Over-Relaxation (SOR) method is used in the solution of the stream function equation. The analysis has been done for an enclosure with different aspect ratios ranging from 0.5 to 11 for three different combinations of partially active sections. The results are presented graphically in terms of streamlines, isotherms and isoconcentrations. In addition, the heat and mass transfer rate in the cavity is measured in terms of the average Nusselt and Sherwood numbers for various parameters including thermal Grashof number, Lewis number, buoyancy ratio and aspect ratio. It is revealed that the placement order of partially thermally active walls and the buoyancy ratio influence significantly the flow pattern and the corresponding heat and mass transfer performance in the cavity.

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Numerical study of mixed convective heat transfer in a lid‐driven enclosure with rotating cylinders

Dalvi

Bali

Nayka

et al. 2019

Heat Trans. Asian Res.

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A numerical simulation is performed to characterize the mixed convective transport in a three‐dimensional square lid‐driven enclosure with two rotating cylinders. The top wall is moving in the positive x‐direction, and the bottom wall is at a higher fixed temperature compared with all other isothermal walls. Both cylinders are rotating in its own plane about their centroidal axis. On the basis of rotation of both cylinders in clockwise or counter‐clockwise directions, four rotational models are studied. Various controlling parameters considered in the present study are Grashof number (10 3 < Gr < 10 5), rotating speed of the cylinder (5 < ω < 50), and the Reynolds number based on top wall movement is fixed to 100. The effect of cylinder rotation on the heat transfer of bottom wall is reported with the help of streamlines, contour plots of z‐component of vorticity, averaged and local Nusselt number, ratios of secondary flow and drag coefficient. It is observed that the heat transfer at the bottom wall is substantially dependent on the rotational model and rotational speed of the cylinder.

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Mixed convection in a lid driven square cavity with an isothermally heated square blockage inside

Cited by 115 publications

References 18 publications

Numerical Investigation of Mixed Convection Heat Transfer of Nanofluid in a Lid Driven Square Cavity with Three Triangular Heating Blocks

Numerical Investigation of Mixed Convection Heat Transfer of Nanofluid in a Lid Driven Square Cavity with Three Triangular Heating Blocks

Numerical investigation of double diffusive buoyancy forces induced natural convection in a cavity partially heated and cooled from sidewalls

Numerical study of mixed convective heat transfer in a lid‐driven enclosure with rotating cylinders

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