Abstract
The MHD flow and heat transfer from water functionalized CNTs over a static/moving wedge are studied numerically. Thermal conductivity and viscosity of both single and multiple wall carbon nanotubes (CNTs) within a base fluid (water) of similar volume are investigated to determine the impact of these properties on thermofluid performance. The governing partial differential equations are converted into nonlinear, ordinary, and coupled differential equations and are solved using an implicit finite difference method with quasi-linearization techniques. The effects of volume fraction of CNTs and magnetic and wedge parameters are investigated and presented graphically. The numerical results are compared with the published data and are found to be in good agreement. It is shown that the magnetic field reduces boundary layer thickness and increases skin friction and Nusselt numbers. Due to higher density and thermal conductivity, SWCNTs offer higher skin friction and Nusselt numbers.
Highlights
Many manufacturing procedures consist of continuous stretching surfaces cooled by an external stream along the production line
The objective of this study is to explore the heat transfer properties of water-based nanofluids containing SWCNTs and MWCNTs
The effects of the magnetic field and volume fraction of SWCNTs on the dimensionless velocity are displayed in Figures 2 and 3 for flow past horizontal and near the stagnation point of vertical stationary and moving flat plates, respectively
Summary
Many manufacturing procedures consist of continuous stretching surfaces cooled by an external stream along the production line. The examples are the thermal processing of sheet-like materials which is a necessary operation in the production of paper, linoleum, polymeric sheets, wire drawing, drawing of plastic films, metal spinning, roofing shingles, insulating materials, finefiber matts, cooling of films or sheets, conveyor belts, metallic plates, and cylinders In virtually all such processing operations, the sheet moves parallel to its own plane. The moving sheet may induce motion in the neighboring fluid or, alternatively, the fluid may have an independent forced convection motion that is parallel to that of the sheet Both the kinematics of stretching and the simultaneous heating or cooling during such processes have a decisive influence on the quality of the final products.
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