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首页> 外文期刊>Special topics & reviews in porous media >ON THE STABILITY OF COPPER OXIDE/WATER NON-DARCY NANOFLUID FLOW OVER AN EXTENDING/CONTRACTING WEDGE AND STAGNATION POINT
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ON THE STABILITY OF COPPER OXIDE/WATER NON-DARCY NANOFLUID FLOW OVER AN EXTENDING/CONTRACTING WEDGE AND STAGNATION POINT

机译：ON THE STABILITY OF COPPER OXIDE/WATER NON-DARCY NANOFLUID FLOW OVER AN EXTENDING/CONTRACTING WEDGE AND STAGNATION POINT

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This article explores the heat transfer characteristics and dual nature of CuO/water non-Darcy nanofluid flow over an extending/contracting wedge and the stagnation point of a flat plate. Suitable self-similarity variables are employed to convert the fluid transport equations into ordinary differential equations, and the bvp4c MATLAB solver has been used to solve the equations. The impacts of active parameters on fluid transport properties are illustrated graphically. The outcomes of the present analysis reveal that the characteristics of the porous permeability parameter on velocity and temperature distributions obtained from the first and second solutions exhibit opposite natures. Growing values of nanoparticle volume fraction uplift the heat transfer rate for the first solution. The heat transfer rate of the CuO nanoparticle is higher over the stagnation point compared with the wedge. Two solutions are found for the limited range of the extending/contracting parameter. The detailed stability test is carried out to determine which of the two solutions is physically reliable and stable. In the wedge case, the first and second solutions have the opposite nature on fluid velocity for rising values of the inertia coefficient. Raising the nanoparticle volume fraction lowers the temperature for the first solution. Furthermore, present results are useful for engineers and researchers to find a physically reliable solution when extending/contracting a surface. These kinds of studies may be useful in glucose and cholesterol detection, anticancer, cancer cell detection, antibacterial uses, targeted therapeutics, antifungal activity, and nanobiosensors.

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