Numerical simulation of water based magnetite nanoparticles between two parallel disks

• Analysis is performed for squeezing channel between two parallel disks.
• Attained results depict that enhancement in the thermal conductivity of working fluid that based on nanoparticles.
• An efficient heat transfer is attained by incorporating magnetite (Fe3O4) Ferro-particles.

Present study examines the fully developed squeezing flow of water functionalized magnetite nanoparticles between two parallel disks. For strongly magnetite fluid (water) three different types of nanoparticles having better thermal conductivity: Magnetite (Fe3O4), Cobalt ferrite (CoFe2O4) and Mn–Zn ferrite (Mn–ZnFe2O4) are incorporated within the base fluid (water). Systems of equations containing the nanoparticle volume fraction are rehabilitating in the form of partial differential equations using cylindrical coordinate system. Resulting mathematical model is rehabilitated in the form of ordinary differential equations with the help of compatible similarity transformation. Results are analyzed for velocity, temperature, reduced skin friction and reduced Nusselt number with variation of different emerging parameters and determine the superb thermal conductivity among mentioned nanoparticles. Comparison among each mixture of ferrofluid has been plotted as response to differences in reduced skin friction and reduced Nusselt number distributions. Dominating effects are analyzed for squeezing parameter and it is found that water based-magnetite (Fe3O4) gives the highest reduced skin friction and reduced Nusselt number as compared to the rest of the mixtures. Isotherms are also plotted against various values of nanoparticle volume fraction to analyze the temperature distribution within the whole domain of squeezing channel.

Squeezed magnetized water based fluid flow between two parallel disks in the presence of three different kinds of nanoparticles (magnetite (Fe3O4), cobalt ferrite (CoFe2O4) and Mn–Zn ferrite (Mn–ZnFe2O4)). Isotherms plots for squeezing flow in the presence of Magnetic particles.Figure optionsDownload as PowerPoint slide