Numerical investigation of natural convection of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si58.gif" overflow="scroll"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Al</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>O</mml:mtext></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>-water nanofluid in a wavy cavity with conductive inner block using Buongiorno’s two-phase model

Hashim, Ishak; Alsabery, Ammar I.; Sheremet, Mikhail A.; Chamkha, Ali J.

doi:10.1016/j.apt.2018.11.017

Cited by 99 publications

(22 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They found that undulations on the cold wall improve the heat transfer rate. Considering the wavy wall forms, the entropy generation [22,23], non-uniform heating [24], partially heated wall [25,26], and micropolar fluids [27] have been investigated in recent years.…”

Section: Introductionmentioning

confidence: 99%

Role of Rotating Cylinder toward Mixed Convection inside a Wavy Heated Cavity via Two-Phase Nanofluid Concept

et al. 2020

View full text Add to dashboard Cite

The mixed convection two-phase flow and heat transfer of nanofluids were addressed within a wavy wall enclosure containing a solid rotating cylinder. The annulus area between the cylinder and the enclosure was filled with water-alumina nanofluid. Buongiorno’s model was applied to assess the local distribution of nanoparticles in the host fluid. The governing equations for the mass conservation of nanofluid, nanoparticles, and energy conservation in the nanofluid and the rotating cylinder were carried out and converted to a non-dimensional pattern. The finite element technique was utilized for solving the equations numerically. The influence of the undulations, Richardson number, the volume fraction of nanoparticles, rotation direction, and the size of the rotating cylinder were examined on the streamlines, heat transfer rate, and the distribution of nanoparticles. The Brownian motion and thermophoresis forces induced a notable distribution of nanoparticles in the enclosure. The best heat transfer rate was observed for 3% volume fraction of alumina nanoparticles. The optimum number of undulations for the best heat transfer rate depends on the rotation direction of the cylinder. In the case of counterclockwise rotation of the cylinder, a single undulation leads to the best heat transfer rate for nanoparticles volume fraction about 3%. The increase of undulations number traps more nanoparticles near the wavy surface.

show abstract

Section: Introductionmentioning

confidence: 99%

Role of Rotating Cylinder toward Mixed Convection inside a Wavy Heated Cavity via Two-Phase Nanofluid Concept

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The governing equations and the boundary condition was solved numerically by the finite element method (FEM). Divisions of the calculation domain into finite elements where the close form of each of the temperature (isotherms), velocity (streamfunctions) and nanoparticle distribution (iso concentrations) variables were given by 39 . Computational domain element is generated by triangular shapes.…”

Section: Solution Methodsmentioning

confidence: 99%

Natural convection of Nanoliquid from a Cylinder in Square Porous Enclosure using Buongiorno’s Two-phase Model

Alhashash

2020

Sci Rep

View full text Add to dashboard Cite

concentration. 2. A non parabolic curve of the local Nusselt number profile were found when the active surface portion greater than 50%. The minimum heat transfer rate of the active surface were obtained at location ξ =°90. 3. In general, the ratio of the heat transfer per unit area of the heat source decreases as the length of the heated surface increases. The heat transfer rate is intensified for the half thermally active surface and high value of Darcy number. The higher average nanoparticles concentration, the higher heat transfer rate.

show abstract

“…Many studies have modeled and simulated the natural convection of a suspension of nanoparticles in a base fluid (nanofluids) in enclosures. Sheremet and Pop [24], Hashim et al [25] and Asabery [26] analyzed the flow and heat transfer of nanofluids in a wavy wall cavity.…”

Section: Takedownmentioning

confidence: 99%

Natural convective flow and heat transfer of Nano-Encapsulated Phase Change Materials (NEPCMs) in a cavity

Ghalambaz

Chamkha

Wen

2019

International Journal of Heat and Mass Transfer

312

View full text Add to dashboard Cite

show abstract

Numerical investigation of natural convection of Al2O3-water nanofluid in a wavy cavity with conductive inner block using Buongiorno’s two-phase model

Cited by 99 publications

References 45 publications

Role of Rotating Cylinder toward Mixed Convection inside a Wavy Heated Cavity via Two-Phase Nanofluid Concept

Role of Rotating Cylinder toward Mixed Convection inside a Wavy Heated Cavity via Two-Phase Nanofluid Concept

Natural convection of Nanoliquid from a Cylinder in Square Porous Enclosure using Buongiorno’s Two-phase Model

Natural convective flow and heat transfer of Nano-Encapsulated Phase Change Materials (NEPCMs) in a cavity

Contact Info

Product

Resources

About