High-performance nanofluid synthesis and DFT-TDDFT study of graphene nanosheets along bent surface for enhanced oil-recovery implementations

Case Studies in Thermal Engineering

Ahmed F. Al-Hossainy¹  Mohamed R. Eid² 

[1] Corresponding author.;Mathematics Department, Faculty of Science, Northern Border University, Arar, 1321, Saudi Arabia;

关键词: [SH2O/GO+SiO2]h;    Characterization properties;    DFT;    Hybrid nanofluid;    Curved surface;   

DOI  :  

来源: DOAJ

【 摘 要 】

Thermal characteristics over a slippage permeable curved surface of mono and hybrid nanofluid convective flows. The surface is assumed to be convoluted with radius R in circle part. The salt-water is used as a base fluid to model the flow with graphene and silica nanoparticles. The magnetic effect is taken into consideration with a heat source (sink) and thermal radiative flow impact. The mathematical model is solved by Chebyshev spectral collocation method after transformed into a nondimensional form. The nanostructure thin films of [SH2O/GO]m nanofluid and [SH2O/GO+SiO2]h are synthesized by using a spin-coating technique process with a thickness of 100 ± 3 nm/25 °C. The structure characterization (FT-IR spectrum and XRD) results from experimental and DFT-TDDFT (DMOl3) data are studied for mono and hybrid nanofluids. The outcomes show that the temperature is declined with a curvature of the surface, while the flow velocity is boosted. Rate of heat transmit is enhanced with the radiative and suction flow. The results specifically determine that ΔEgOpt values decrease from 2.293 eV for [SH2O/GO]m mono nanofluid to 1.196 eV for [SH2O/GO+SiO2]h hybrid nanofluid using the DFT computations EHOMO and ELUMO calculations. This result concluded that the [SH2O/GO]m transformed from semiconductor to [SH2O/GO+SiO2]h as a super-conductor hybrid nanofluid by adding (SiO2 nanoparticles).

【 授权许可】

Unknown