Abstract
In the modern era, diathermic oils have been gotten the great attention from researchers due to its notable and momentous applications in engineering, mechanics and in the industrial field. The aim of this paper is to model the problem to augment the heat transfer rate of diathermic oils, specifically, Engine-oil (EO) and Kerosene-oil (KO) are taken. The present work is dedicated to examine the shape impacts of molybdenum-disulfide (MoS2) nanoparticles in the free convection magnetohydrodynamic (MHD) flow of Brinkman-type nanofluid in a rotating frame. The problem is modeled in terms of partial differential equations with oscillatory boundary conditions. The integer-order model is transformed to fractional-order model in time (Caputo-Fabrizio). The exact solutions are obtained using the Laplace transform technique. Figures are drawn to compare the different non-spherically shaped molybdenum-disulfide nanoparticles on secondary and primary velocities. The Nusselt number is computed in the tabular form and discussed in detail. It is worth noting that platelet and blade shape of MoS2 nanoparticle has more tendency to improve the heat transfer rate of both fluids as compared to nanoparticles with brick and cylinder shapes. It is also shown that the rate of heat transfer enhances 13.51% by adding MoS2 in engine oil which improved its lubrication properties.
Highlights
Convective heat transfer in nanofluids is a topic of major contemporary interest both in sciences and in engineering
Keeping that in mind, some questions still need to be answered that which nanoparticle is suitable for specified base fluid and which shapes of nanoparticles have more tendency to augment the thermal conductivity and heat transfer rate
This result indicates that EO based nanofluid is more viscous and has higher thermal conductivity followed by KO based nanofluid
Summary
Convective heat transfer in nanofluids is a topic of major contemporary interest both in sciences and in engineering. Timofeeva et al.[15] studied experimental and theoretical model of Al2O3 nanofluids with different shapes of nanoparticles They considered a base fluid mixture of water and ethylene glycol (EG) and discussed the effect of different shapes of Al2O3. Aaiza et al.[17] theoretically investigated energy transfer in MHD mixed convection flow of nanofluids containing different shapes of nanoparticles inside a channel filled with saturated porous medium. The fractional derivatives approach is widely used to study rheological properties of fluids They have been used as an effective tool across physical situations. For instant fractional derivatives are used in bio-rheology, plasma physics, astrophysics, biophysics, thermodynamics, traveling wave solutions, optics and electromagnetism[26]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
