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M. Sheikholeslami - One of the best experts on this subject based on the ideXlab platform.

  • Examination of CVFEM for nanofluid free convection MHD flow through Permeable Medium
    Applied Nanoscience, 2020
    Co-Authors: Sabir A. Shehzad, Ahmad Shafee, M. Sheikholeslami, T. Ambreen, Houman Babazadeh
    Abstract:

    In current attempt, a numerical code was developed to model the nanofluid free convected magnetized flow by porous cavity. Non-Darcy formula is carried out to include the term of porosity in momentum expression. Radiative phenomenon is reported for distinct nanoparticle shapes. Aspects of radiative constraint, shape factor, Rayleigh number, magnetic force, and nanoparticles’ shape on nanofluid magneto-hydrodynamic natural convection are analyzed. Result demonstrated that application of external magnetic force deteriorates the convection and this reduction is more perceptible at the greater permeability. The conductive heat transport is the dominating form of heat transportation under the impact of higher magnetic force. For the constant values of Rayleigh, Hartmann’s and Darcy number, $${\text{Nu}}_{{{\text{avg}}}}$$ Nu avg is independent of shape factor and observes a direct association with the radiation parameter.

  • numerical approach for mhd al2o3 water nanofluid transportation inside a Permeable Medium using innovative computer method
    Computer Methods in Applied Mechanics and Engineering, 2019
    Co-Authors: M. Sheikholeslami
    Abstract:

    Abstract Innovative numerical approach was employed to demonstrate nanofluid MHD flow through a porous enclosure. To model porous Medium, Darcy law has been employed. Radiation impact was included in energy equation. The new method (CVFEM) has been employed due to complex shape of porous cavity. Aluminium oxide with different shapes was dispersed in to water. Viscosity of nanofluid changes with Brownian motion impacts. Roles of radiation, buoyancy and Hartmann number on treatment of alumina were displayed. Results prove that convection detracts with augment of magnetic forces. Radiation can reduce the temperature gradient.

  • numerical modeling for alumina nanofluid magnetohydrodynamic convective heat transfer in a Permeable Medium using darcy law
    International Journal of Heat and Mass Transfer, 2018
    Co-Authors: M. Sheikholeslami, S A Shehzad, Ahmad Shafee
    Abstract:

    Abstract CVFEM is employed in this article to model alumina nanofluid magnetohydrodynamic flow through a Permeable enclosure. Influences of Hartmann number, buoyancy, radiation parameters on nanofluid treatment were displayed. Viscosity and thermal conductivity of alumina are predicted considering Brownian motion and shape factor impacts. Results are displayed that Lorentz forces boosts the conduction mechanism. Nu ave enhances with reduce of Ha . Augmenting radiation parameter makes thermal boundary layer to be thinner.

  • heat transfer of fe3o4 water nanofluid in a Permeable Medium with thermal radiation in existence of constant heat flux
    Chemical Engineering Science, 2017
    Co-Authors: M. Sheikholeslami, Davood Domairry Ganji, Rasoul Moradi
    Abstract:

    Abstract Influence of non-uniform magnetic field on Fe 3 O 4 –water ferrofluid flow in a porous cavity is simulated. Shape factor effect on nanofluid properties is taken into consideration. Vorticity stream function formulation is reported. The solutions of final equations are obtained using CVFEM. Figures are depicted for different values of radiation parameter ( Rd ) , Darcy number ( Da ) , Fe 3 O 4 –water volume fraction ( ϕ ) , Rayleigh ( Ra ) and Hartmann ( Ha ) numbers. Results show that augmenting in Hartmann number leads to decrease in velocity of nanofluid and heat transfer rate. Utilizing Platelet shaped nanoparticles results the highest Nusselt number.

Zahir Shah - One of the best experts on this subject based on the ideXlab platform.

  • Analysis of hybrid nanofluid behavior within a porous cavity including Lorentz forces and radiation impacts
    Journal of Thermal Analysis and Calorimetry, 2020
    Co-Authors: Houman Babazadeh, Ikram Ullah, Zahir Shah, Poom Kumam, Ahmad Shafee
    Abstract:

    We investigate the hybrid nanofluid convection transportation within a Permeable Medium in appearance of an externally applied magnetic force by modeling it through control volume-based finite element method. To employ the permeability effect terms, one term was added in momentum and radiation was involved to show the diverse states of nanoparticles. The impact of Darcy and Rayleigh as well as magnetic and radiation parameters on the nanofluid performance is investigated and presented. We observe that the conduction mode enhances with higher values of Ha. Nusselt number Nu augments with the consideration of radiation source term. The addition of Lorentz force makes the conduction mode more sensible. The agreement with the published results makes us more confident about the validity of our numerical computations.

  • Impact of Thermal Radiation and Heat Source/Sink on MHD Time-Dependent Thin-Film Flow of Oldroyed-B, Maxwell, and Jeffry Fluids over a Stretching Surface
    MDPI AG, 2019
    Co-Authors: Abdul Samad Khan, Yufeng Nie, Zahir Shah
    Abstract:

    In this study paper, we examined the magnetohydrodynamic (MHD) flow of three combined fluids, Maxwell, Jeffry, and Oldroyed- B fluids, with variable heat transmission under the influence of thermal radiation embedded in a Permeable Medium over a time-dependent stretching sheet. The fluid flow of liquid films was assumed in two dimensions. The fundamental leading equations were changed to a set of differential nonlinear and coupled equations. For this conversion, suitable similarity variables were used. An optimal tactic was used to acquire the solution of the modeled problems. The convergence of the technique has been shown numerically. The obtained analytical and numerical consequences are associated graphically and tabulated. An excellent agreement was obtained between the homotropy analysis method (HAM) and numerical methods. The variation of the skin friction and Nusslet number and their influence on the temperature and concentration profiles were scrutinized. The influence of the thermal radiation, unsteadiness effect, and MHD were the main focus of this study. Furthermore, for conception to be physically demonstrated, the entrenched parameters are discussed graphically in detail along with their effect on liquid film flow

  • Impact of Nonlinear Thermal Radiation and the Viscous Dissipation Effect on the Unsteady Three-Dimensional Rotating Flow of Single-Wall Carbon Nanotubes with Aqueous Suspensions
    MDPI AG, 2019
    Co-Authors: Muhammad Jawad, Zahir Shah, Saeed Islam, Jihen Majdoubi, I. Tlili, Waris Khan, Ilyas Khan
    Abstract:

    The aim of this article is to study time dependent rotating single-wall electrically conducting carbon nanotubes with aqueous suspensions under the influence of nonlinear thermal radiation in a Permeable Medium. The impact of viscous dissipation is taken into account. The basic governing equations, which are in the form of partial differential equations (PDEs), are transformed to a set of ordinary differential equations (ODEs) suitable for transformations. The homotopy analysis method (HAM) is applied for the solution. The effect of numerous parameters on the temperature and velocity fields is explanation by graphs. Furthermore, the action of significant parameters on the mass transportation and the rates of fiction factor are determined and discussed by plots in detail. The boundary layer thickness was reduced by a greater rotation rate parameter in our established simulations. Moreover, velocity and temperature profiles decreased with increases of the unsteadiness parameter. The action of radiation phenomena acts as a source of energy to the fluid system. For a greater rotation parameter value, the thickness of the thermal boundary layer decreases. The unsteadiness parameter rises with velocity and the temperature profile decreases. Higher value of ϕ augments the strength of frictional force within a liquid motion. For greater R and θ w ; the heat transfer rate rises. Temperature profile reduces by rising values of Pr

Rasoul Moradi - One of the best experts on this subject based on the ideXlab platform.

  • heat transfer of fe3o4 water nanofluid in a Permeable Medium with thermal radiation in existence of constant heat flux
    Chemical Engineering Science, 2017
    Co-Authors: M. Sheikholeslami, Davood Domairry Ganji, Rasoul Moradi
    Abstract:

    Abstract Influence of non-uniform magnetic field on Fe 3 O 4 –water ferrofluid flow in a porous cavity is simulated. Shape factor effect on nanofluid properties is taken into consideration. Vorticity stream function formulation is reported. The solutions of final equations are obtained using CVFEM. Figures are depicted for different values of radiation parameter ( Rd ) , Darcy number ( Da ) , Fe 3 O 4 –water volume fraction ( ϕ ) , Rayleigh ( Ra ) and Hartmann ( Ha ) numbers. Results show that augmenting in Hartmann number leads to decrease in velocity of nanofluid and heat transfer rate. Utilizing Platelet shaped nanoparticles results the highest Nusselt number.

  • Heat transfer of Fe3O4–water nanofluid in a Permeable Medium with thermal radiation in existence of constant heat flux
    Chemical Engineering Science, 2017
    Co-Authors: Mohsen Sheikholeslami, Davood Domairry Ganji, Rasoul Moradi
    Abstract:

    Abstract Influence of non-uniform magnetic field on Fe 3 O 4 –water ferrofluid flow in a porous cavity is simulated. Shape factor effect on nanofluid properties is taken into consideration. Vorticity stream function formulation is reported. The solutions of final equations are obtained using CVFEM. Figures are depicted for different values of radiation parameter ( Rd ) , Darcy number ( Da ) , Fe 3 O 4 –water volume fraction ( ϕ ) , Rayleigh ( Ra ) and Hartmann ( Ha ) numbers. Results show that augmenting in Hartmann number leads to decrease in velocity of nanofluid and heat transfer rate. Utilizing Platelet shaped nanoparticles results the highest Nusselt number.

Ahmad Shafee - One of the best experts on this subject based on the ideXlab platform.

  • Examination of CVFEM for nanofluid free convection MHD flow through Permeable Medium
    Applied Nanoscience, 2020
    Co-Authors: Sabir A. Shehzad, Ahmad Shafee, M. Sheikholeslami, T. Ambreen, Houman Babazadeh
    Abstract:

    In current attempt, a numerical code was developed to model the nanofluid free convected magnetized flow by porous cavity. Non-Darcy formula is carried out to include the term of porosity in momentum expression. Radiative phenomenon is reported for distinct nanoparticle shapes. Aspects of radiative constraint, shape factor, Rayleigh number, magnetic force, and nanoparticles’ shape on nanofluid magneto-hydrodynamic natural convection are analyzed. Result demonstrated that application of external magnetic force deteriorates the convection and this reduction is more perceptible at the greater permeability. The conductive heat transport is the dominating form of heat transportation under the impact of higher magnetic force. For the constant values of Rayleigh, Hartmann’s and Darcy number, $${\text{Nu}}_{{{\text{avg}}}}$$ Nu avg is independent of shape factor and observes a direct association with the radiation parameter.

  • Analysis of hybrid nanofluid behavior within a porous cavity including Lorentz forces and radiation impacts
    Journal of Thermal Analysis and Calorimetry, 2020
    Co-Authors: Houman Babazadeh, Ikram Ullah, Zahir Shah, Poom Kumam, Ahmad Shafee
    Abstract:

    We investigate the hybrid nanofluid convection transportation within a Permeable Medium in appearance of an externally applied magnetic force by modeling it through control volume-based finite element method. To employ the permeability effect terms, one term was added in momentum and radiation was involved to show the diverse states of nanoparticles. The impact of Darcy and Rayleigh as well as magnetic and radiation parameters on the nanofluid performance is investigated and presented. We observe that the conduction mode enhances with higher values of Ha. Nusselt number Nu augments with the consideration of radiation source term. The addition of Lorentz force makes the conduction mode more sensible. The agreement with the published results makes us more confident about the validity of our numerical computations.

  • Simulation of natural convection of Fe3O4-water ferrofluid in a circular porous cavity in the presence of a magnetic field
    The European Physical Journal Plus, 2019
    Co-Authors: Ahmad Shafee, Muhammad Ramzan, Houman B. Rokni, Qasem M. Al-mdallal
    Abstract:

    In the current paper, natural convection of ferrofluid through a Permeable Medium has been simulated by using a new method (CVFEM). To predict nanofluid characteristics, a single-phase model has been utilized. The roles of the Darcy number, the Hartmann number, the concentration of ferrofluid, and buoyancy forces are displayed in the results. Outputs display that temperature detracts with the augmentation of buoyancy forces and permeability. Augmenting Lorenz forces makes temperature to enhance. A stronger magnetic field can decrease the ferrofluid velocity.

  • Mesoscopic investigation for alumina nanofluid heat transfer in Permeable Medium influenced by Lorentz forces
    Computer Methods in Applied Mechanics and Engineering, 2019
    Co-Authors: Mohsen Sheikholeslami, Ahmad Shafee, Salman Saleem, Tasawar Hayat, A. Alsaedi, M. Ijaz Khan
    Abstract:

    Abstract Transportation of Al2O3 nanoparticles due to magnetic forces through a Permeable cubic domain with cubic hot obstacle is presented in this research. Roles of permeability and Lorentz and buoyancy forces on nanoparticles transportation are described via LBM. Brownian motion effect impact is included in properties of Al2O3- H 2 O nanofluid. Outputs prove that increasing Ha leads to stronger conduction mode. As Darcy number enhances, thermal boundary layer becomes thinner. Augmenting permeability makes N u a v e to augment.

  • numerical modeling for alumina nanofluid magnetohydrodynamic convective heat transfer in a Permeable Medium using darcy law
    International Journal of Heat and Mass Transfer, 2018
    Co-Authors: M. Sheikholeslami, S A Shehzad, Ahmad Shafee
    Abstract:

    Abstract CVFEM is employed in this article to model alumina nanofluid magnetohydrodynamic flow through a Permeable enclosure. Influences of Hartmann number, buoyancy, radiation parameters on nanofluid treatment were displayed. Viscosity and thermal conductivity of alumina are predicted considering Brownian motion and shape factor impacts. Results are displayed that Lorentz forces boosts the conduction mechanism. Nu ave enhances with reduce of Ha . Augmenting radiation parameter makes thermal boundary layer to be thinner.

Mohsen Sheikholeslami - One of the best experts on this subject based on the ideXlab platform.

  • Mesoscopic investigation for alumina nanofluid heat transfer in Permeable Medium influenced by Lorentz forces
    Computer Methods in Applied Mechanics and Engineering, 2019
    Co-Authors: Mohsen Sheikholeslami, Ahmad Shafee, Salman Saleem, Tasawar Hayat, A. Alsaedi, M. Ijaz Khan
    Abstract:

    Abstract Transportation of Al2O3 nanoparticles due to magnetic forces through a Permeable cubic domain with cubic hot obstacle is presented in this research. Roles of permeability and Lorentz and buoyancy forces on nanoparticles transportation are described via LBM. Brownian motion effect impact is included in properties of Al2O3- H 2 O nanofluid. Outputs prove that increasing Ha leads to stronger conduction mode. As Darcy number enhances, thermal boundary layer becomes thinner. Augmenting permeability makes N u a v e to augment.

  • Heat transfer of Fe3O4–water nanofluid in a Permeable Medium with thermal radiation in existence of constant heat flux
    Chemical Engineering Science, 2017
    Co-Authors: Mohsen Sheikholeslami, Davood Domairry Ganji, Rasoul Moradi
    Abstract:

    Abstract Influence of non-uniform magnetic field on Fe 3 O 4 –water ferrofluid flow in a porous cavity is simulated. Shape factor effect on nanofluid properties is taken into consideration. Vorticity stream function formulation is reported. The solutions of final equations are obtained using CVFEM. Figures are depicted for different values of radiation parameter ( Rd ) , Darcy number ( Da ) , Fe 3 O 4 –water volume fraction ( ϕ ) , Rayleigh ( Ra ) and Hartmann ( Ha ) numbers. Results show that augmenting in Hartmann number leads to decrease in velocity of nanofluid and heat transfer rate. Utilizing Platelet shaped nanoparticles results the highest Nusselt number.