Abstract
Nanoparticles are generally used to scatter and absorb solar radiations in nanofluid-based direct solar receivers to efficiently transport and store the heat. However, solar energy absorption in nanofluid can be enhanced by using differential materials and tuning nanofluid parameter. In this regard, theoretical investigations of unsteady homogeneous Hiemenz flow of an incompressible nanofluid having copper and silver nanoparticles over a porous wedge is carried out by using optimal homotopy asymptotic method (OHAM). Hence, a semi-analytical solver is applied to the transformed system to study the significance of magnetic field along with Prandtl number. In this work, impacts of conductive radiations, heat sink/source, unsteadiness, and flow parameters have been investigated for velocity and temperature profiles of copper and silver nanoparticles-based nanofluid. The effects of magnetic strength, volume fraction of nanoparticles, thermal conductivity, and flow parameters have also been studied on the considered nanofluids.
Highlights
The world population has been growing and industrial activities have been increasing for more than a decade and increased industrial activities, which have increased the global energy consumption on a daily basis
Sheikholeslami et al [35] reviewed empirical and numerical analyses of thermal performance development in flat plate solar collectors (FPSCs) based on the up-to-date developments, methods, critical economic factors, the significance of solar water heating, and the challenges faced by the implementations of such solar water heating systems, which could be beneficial for all stakeholders of solar energy
The influence on different nanofluids with varying concentrations of nanoparticles copper, and silver particles in presence of magnetic field are gauged in a porous wedge for the solar energy; Optimal homotopy asymptotic method (OHAM) [39,40,41,42,43] has been proposed for the numerical solutions of unsteady Hiemenz flow of nanofluid over a porous wedge; The velocity and temperature profiles are studied with the dynamics of nanofluids
Summary
The world population has been growing and industrial activities have been increasing for more than a decade and increased industrial activities, which have increased the global energy consumption on a daily basis. M. Sheikholeslami et al [35] reviewed empirical and numerical analyses of thermal performance development in flat plate solar collectors (FPSCs) based on the up-to-date developments, methods, critical economic factors, the significance of solar water heating, and the challenges faced by the implementations of such solar water heating systems, which could be beneficial for all stakeholders of solar energy. The influence on different nanofluids with varying concentrations of nanoparticles copper, and silver particles in presence of magnetic field are gauged in a porous wedge for the solar energy; Optimal homotopy asymptotic method (OHAM) [39,40,41,42,43] has been proposed for the numerical solutions of unsteady Hiemenz flow of nanofluid over a porous wedge; The velocity and temperature profiles are studied with the dynamics of nanofluids. The remaining sections of the paper is organized as follows: Section 2 will discuss the modeling of nanofluid flow over porous wedge, Section 3 will cover the numerical inferences of optimal homotopy asymptotic method (OHAM), Section 4 will present solution of the proposed method as well as results, and lastly Section 5 will conclude the research contributions being proposed
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