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Research paper thumbnail of Effect of Nanoparticle Material, Porosity and Thermal Radiation on Forced Convection Heat Transfer of Cu-Water and CuO-Water Nanofluids over a Stretching Sheet

International Journal of Heat and Technology, Oct 30, 2023

This study presents an examination of the incompressible magneto-hydrodynamic flow of water-based... more This study presents an examination of the incompressible magneto-hydrodynamic flow of water-based nanofluids, specifically Cu-water and CuO-water, over a stretching sheet within a porous medium under the influence of a magnetic field and radiation. The primary objective is to discern the effects of the nanoparticle volume fraction, magnetic field strength, Darcy number, Reynolds number, suction parameter, and radiation conductivity parameter on the heat transfer and friction characteristics of the nanofluid flow. The governing flow equations, initially in the form of partial differential equations, were transformed into nonlinear ordinary differential equations via the application of similarity variables. The resulting boundary value problem was tackled numerically utilizing the fourth-order Runge-Kutta method coupled with the shooting technique. The findings revealed velocity and temperature profiles, the coefficient of local friction, and the Nusselt number as functions of the controlling parameters for both types of nanofluids. It was observed that enhancements in the Darcy number, magnetic field strength, Reynolds number, and suction parameter corresponded to a decline n nanofluid velocity. Conversely, a rise in the nanoparticle volume fraction, magnetic field strength, and radiation parameter was associated with an increase in temperature profile, with the opposite effect noted for the Darcy number, Reynolds number, and suction parameter. Notably, CuO nanoparticles exhibited superior heat transfer performance. These insights potentially pave the way for optimized nanoparticle selection and porosity management in nanofluids, thereby advancing heat transfer enhancement and skin friction reduction in the presence of magnetic fields and thermal radiation.

Research paper thumbnail of Effect of Triangular Solid Inserts on Optimization of Conjugate Natural Convection in Complex Cavity

Research paper thumbnail of Effect of Triangular Solid Inserts on Optimization of Conjugate Natural Convection in Complex Cavity

Research paper thumbnail of Numerical Simulation of the Entropy Generation in a Fluid in Forced Convection on a Plane Surface while using the Method of Runge-Kutta

Numerical Simulation of the Entropy Generation in a Fluid in Forced Convection on a Plane Surface while using the Method of Runge-Kutta

European Journal of …, 2010

European Journal of Scientific Research ISSN 1450-216X Vol.42 No.4 (2010), pp.637-643 © EuroJourn... more European Journal of Scientific Research ISSN 1450-216X Vol.42 No.4 (2010), pp.637-643 © EuroJournals Publishing, Inc. 2010 http://www.eurojournals.com/ejsr.htm ... Numerical Simulation of the Entropy Generation in a Fluid in ... Forced Convection on a Plane Surface while ...

Research paper thumbnail of Numerical computation of natural convection in an isosceles triangular cavity with a partially active base and filled with a Cu–water nanofluid

Numerical computation of natural convection in an isosceles triangular cavity with a partially active base and filled with a Cu–water nanofluid

Heat and Mass Transfer, 2013

Research paper thumbnail of Investigation of Conjugate Heat Transfer in Microchannels Using Variable Thermophysical Property Nanofluids

Investigation of Conjugate Heat Transfer in Microchannels Using Variable Thermophysical Property Nanofluids

Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), 2013

We report the results of a study on heat transfer in microchannels. The fluid used is a nanofluid... more We report the results of a study on heat transfer in microchannels. The fluid used is a nanofluid whose properties are temperature dependent. The energy dissipation is evaluated for various solid fraction contents along with the cooling effectiveness of this modern type of heat exchangers. The shape of the channels is also investigated. The evaluation parameter used for thermal energy dissipation is the Nusselt number while that used for cooling effectiveness is the static pressure drop between the inlet and the outlet of the microchannel. Conjugate convection-conduction energy conservation equations have been solved along with mass and momentum conservation equations in order to determine these parameters. The results obtained showed important heat transfer augmentation with solid fraction at the expense of an increased pressure drop, i.e high pumping cost (therefore low cooling effectiveness). The microchannel inlet section geometry was also found to contribute to the values of th...

Research paper thumbnail of Investigation of Conjugate Heat Transfer in Microchannels Using Variable Thermophysical Property Nanofluids

Investigation of Conjugate Heat Transfer in Microchannels Using Variable Thermophysical Property Nanofluids

Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), 2013

We report the results of a study on heat transfer in microchannels. The fluid used is a nanofluid... more We report the results of a study on heat transfer in microchannels. The fluid used is a nanofluid whose properties are temperature dependent. The energy dissipation is evaluated for various solid fraction contents along with the cooling effectiveness of this modern type of heat exchangers. The shape of the channels is also investigated. The evaluation parameter used for thermal energy dissipation is the Nusselt number while that used for cooling effectiveness is the static pressure drop between the inlet and the outlet of the microchannel. Conjugate convection-conduction energy conservation equations have been solved along with mass and momentum conservation equations in order to determine these parameters. The results obtained showed important heat transfer augmentation with solid fraction at the expense of an increased pressure drop, i.e high pumping cost (therefore low cooling effectiveness). The microchannel inlet section geometry was also found to contribute to the values of th...

Research paper thumbnail of Effect of Nanoparticle Material, Porosity and Thermal Radiation on Forced Convection Heat Transfer of Cu-Water and CuO-Water Nanofluids over a Stretching Sheet

International Journal of Heat and Technology, Oct 30, 2023

This study presents an examination of the incompressible magneto-hydrodynamic flow of water-based... more This study presents an examination of the incompressible magneto-hydrodynamic flow of water-based nanofluids, specifically Cu-water and CuO-water, over a stretching sheet within a porous medium under the influence of a magnetic field and radiation. The primary objective is to discern the effects of the nanoparticle volume fraction, magnetic field strength, Darcy number, Reynolds number, suction parameter, and radiation conductivity parameter on the heat transfer and friction characteristics of the nanofluid flow. The governing flow equations, initially in the form of partial differential equations, were transformed into nonlinear ordinary differential equations via the application of similarity variables. The resulting boundary value problem was tackled numerically utilizing the fourth-order Runge-Kutta method coupled with the shooting technique. The findings revealed velocity and temperature profiles, the coefficient of local friction, and the Nusselt number as functions of the controlling parameters for both types of nanofluids. It was observed that enhancements in the Darcy number, magnetic field strength, Reynolds number, and suction parameter corresponded to a decline n nanofluid velocity. Conversely, a rise in the nanoparticle volume fraction, magnetic field strength, and radiation parameter was associated with an increase in temperature profile, with the opposite effect noted for the Darcy number, Reynolds number, and suction parameter. Notably, CuO nanoparticles exhibited superior heat transfer performance. These insights potentially pave the way for optimized nanoparticle selection and porosity management in nanofluids, thereby advancing heat transfer enhancement and skin friction reduction in the presence of magnetic fields and thermal radiation.

Research paper thumbnail of Effect of Triangular Solid Inserts on Optimization of Conjugate Natural Convection in Complex Cavity

Research paper thumbnail of Effect of Triangular Solid Inserts on Optimization of Conjugate Natural Convection in Complex Cavity

Research paper thumbnail of Numerical Simulation of the Entropy Generation in a Fluid in Forced Convection on a Plane Surface while using the Method of Runge-Kutta

Numerical Simulation of the Entropy Generation in a Fluid in Forced Convection on a Plane Surface while using the Method of Runge-Kutta

European Journal of …, 2010

European Journal of Scientific Research ISSN 1450-216X Vol.42 No.4 (2010), pp.637-643 © EuroJourn... more European Journal of Scientific Research ISSN 1450-216X Vol.42 No.4 (2010), pp.637-643 © EuroJournals Publishing, Inc. 2010 http://www.eurojournals.com/ejsr.htm ... Numerical Simulation of the Entropy Generation in a Fluid in ... Forced Convection on a Plane Surface while ...

Research paper thumbnail of Numerical computation of natural convection in an isosceles triangular cavity with a partially active base and filled with a Cu–water nanofluid

Numerical computation of natural convection in an isosceles triangular cavity with a partially active base and filled with a Cu–water nanofluid

Heat and Mass Transfer, 2013

Research paper thumbnail of Investigation of Conjugate Heat Transfer in Microchannels Using Variable Thermophysical Property Nanofluids

Investigation of Conjugate Heat Transfer in Microchannels Using Variable Thermophysical Property Nanofluids

Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), 2013

We report the results of a study on heat transfer in microchannels. The fluid used is a nanofluid... more We report the results of a study on heat transfer in microchannels. The fluid used is a nanofluid whose properties are temperature dependent. The energy dissipation is evaluated for various solid fraction contents along with the cooling effectiveness of this modern type of heat exchangers. The shape of the channels is also investigated. The evaluation parameter used for thermal energy dissipation is the Nusselt number while that used for cooling effectiveness is the static pressure drop between the inlet and the outlet of the microchannel. Conjugate convection-conduction energy conservation equations have been solved along with mass and momentum conservation equations in order to determine these parameters. The results obtained showed important heat transfer augmentation with solid fraction at the expense of an increased pressure drop, i.e high pumping cost (therefore low cooling effectiveness). The microchannel inlet section geometry was also found to contribute to the values of th...

Research paper thumbnail of Investigation of Conjugate Heat Transfer in Microchannels Using Variable Thermophysical Property Nanofluids

Investigation of Conjugate Heat Transfer in Microchannels Using Variable Thermophysical Property Nanofluids

Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), 2013

We report the results of a study on heat transfer in microchannels. The fluid used is a nanofluid... more We report the results of a study on heat transfer in microchannels. The fluid used is a nanofluid whose properties are temperature dependent. The energy dissipation is evaluated for various solid fraction contents along with the cooling effectiveness of this modern type of heat exchangers. The shape of the channels is also investigated. The evaluation parameter used for thermal energy dissipation is the Nusselt number while that used for cooling effectiveness is the static pressure drop between the inlet and the outlet of the microchannel. Conjugate convection-conduction energy conservation equations have been solved along with mass and momentum conservation equations in order to determine these parameters. The results obtained showed important heat transfer augmentation with solid fraction at the expense of an increased pressure drop, i.e high pumping cost (therefore low cooling effectiveness). The microchannel inlet section geometry was also found to contribute to the values of th...