Heat Transfer Enhancement of Nanofluids in a Lid-Driven Square Enclosure

Rahman, M. M.; Billah, M.M.; Hasanuzzaman, M.; Saidur, R.; Rahim, N.A.

doi:10.1080/10407782.2012.715983

Cited by 31 publications

(8 citation statements)

References 26 publications

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“…The following relation (Brinkman [20]) determines the dynamic viscosity of the nanofluid: (8) In this research, the thermal conductivity of nanofluids knf has been seen as being similar to other studies such as Rahman et al [2], Mansour et al [5], Salari et al [6], and Abu-Nada and Shamkha [7] as follows.…”

Section: Geometry and Mathematical Modelsupporting

confidence: 61%

“…A large number of studies on mixed convection with nanofluids have been done in recent years. Rahman et al [2], Talebi et al [3], and Pourmahmoud et al [4] showed that the nanoparticles have a major influence on the flow and thermal fields. Mansour et al [5] found that the type of nanofluids is a key factor for improving transfer, and the highest values were observed when they used copper as nanoparticle.…”

Section: Introductionmentioning

confidence: 99%

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Mixed Convection in Lid-Driven Cavities Filled With a Nanofluid

Zeghbid¹,

Bessaïh²

2015

IJHT

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This present work concerns the study of laminar mixed convection in lid-driven cavities filled with Cu-water nanofluid. Each cavity is heated by two heat sources placed on vertical walls at a constant heat flux q. The top wall moved with uniform velocity of U0. The top and bottom walls of the cavity are maintained at a local cold temperature TC, respectively. The continuity, Navier-Stokes, and energy equations are all solved by using the finite volume method. A computer program is developed and compared with the numerical results found in the literature. Results are presented in terms of streamlines, isotherms, vertical velocity profile, and average Nusselt numbers at a fixed Reynolds number (Re=10) and for Rayleigh numbers in the range (Ra=10 3 -10 6 ), solid volume fractions of nanoparticles (=0-0.20) and different aspect ratios (AR=0.5-4). It is found that the average Nusselt number increases with the increase of the Rayleigh number, solid volume fraction and aspect ratio of the cavity.

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Section: Geometry and Mathematical Modelsupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Mixed Convection in Lid-Driven Cavities Filled With a Nanofluid

Zeghbid¹,

Bessaïh²

2015

IJHT

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“…The main special applications of nanofluids are in heat transfer systems [2][3][4][5][6]. Regarding the current challenges in various industries in regard to heat transfer, nanofluids as a new generation of fluids can play a vital role in developing thermal performance.…”

Section: Introductionmentioning

confidence: 99%

Statistical Analysis of Laminar Convective Heat Transfer of MWCNT-Deionized Water Nanofluid Using the Response Surface Methodology

Shanbedi

Heris

Maskooki³

et al. 2015

Numerical Heat Transfer, Part A: Applications

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According to the response surface methodology (RSM), a statistical analysis of laminar forced convective heat transfer behavior of the multiwalled carbon nanotube (MWCNT)-deionized water nanofluid was carried out using a horizontal circular tube under constant wall heat flux. Sodium dodecyl sulfate, cetyltrimethylammonium bromide, and gum Arabic (GA) were used as surfactants to disperse MWCNT in the deionized water in order to synthesize MWCNT-deionized water nanofluids. MWCNT-deionized water nanofluids in the presence of different surfactants and MWCNT were prepared at various weight ratios (0.5:1, 1:1, and 2:1). The properties of stability, dispersion, and wettability were then studied. According to the results, MWCNT-deionized water nanofluid in the presence of GA at a ratio of 1:1 was selected as the best sample. Nanofluids at concentrations of 0.05 and 0.1% wt% were then prepared. According to the statistical model (RSM), a total of 15 experiments were tested under the laminar flow regime and a flow rate of 171.4-545.4 ml/min, concentration of 0-0.1 wt%, and a magnetic field 0-400 G. The maximum heat transfer coefficient (1,600.1 W/m 2 K) was obtained at a concentration of 0.09wt%wt, a flow rate of 301.3 ml/min, and a magnetic field of 400 G. The experimental results are in agreement with the results obtained by RSM method, confirming the validity and responsiveness of the method.

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“…Mixed convective heat and mass transfer is of key importance in many engineering applications such as transport of contaminants in saturated oil, geothermal reservoirs, and petroleum extraction [10][11][12][13][14][15][16]. The analysis of mixed convection in a right angled triangular enclosure using the finite-element method (FEM) was carried out by Ching et al [17].…”

Section: Introductionmentioning

confidence: 99%

Hydromagnetic Double-Diffusive Unsteady Mixed Convection in a Trapezoidal Enclosure Due to Uniform and Nonuniform Heating at the Bottom Side

Uddin

Rahman

Khan

2015

Numerical Heat Transfer, Part A: Applications

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This article focuses on exploring the effect of the magnetic field on double-diffusive mixed convection in a lid-driven trapezoidal enclosure with a uniformly (case I) and nonuniformly (case II) heated and concentrated bottom wall for unsteady flow. Numerical calculation is carried out for different values of Hartmann number (0-50) and Richardson number (0.1-100) at time s ¼ 1 using the finite-element method (FEM). Temperature, mass, and velocity distribution are expressed graphically as heatlines, masslines, and stream function, respectively. Nusselt and Sherwood numbers are used to demonstrate heat and mass transfer graphically. Better heat and mass transfer were found for case I than case II.

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Heat Transfer Enhancement of Nanofluids in a Lid-Driven Square Enclosure

Cited by 31 publications

References 26 publications

Mixed Convection in Lid-Driven Cavities Filled With a Nanofluid

Mixed Convection in Lid-Driven Cavities Filled With a Nanofluid

Statistical Analysis of Laminar Convective Heat Transfer of MWCNT-Deionized Water Nanofluid Using the Response Surface Methodology

Hydromagnetic Double-Diffusive Unsteady Mixed Convection in a Trapezoidal Enclosure Due to Uniform and Nonuniform Heating at the Bottom Side

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