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  • 标题:High-performance nanofluid synthesis and DFT-TDDFT study of graphene nanosheets along bent surface for enhanced oil-recovery implementations
  • 本地全文:下载
  • 作者:Mohamed R. Eid ; Ahmed F. Al-Hossainy
  • 期刊名称:Case Studies in Thermal Engineering
  • 印刷版ISSN:2214-157X
  • 电子版ISSN:2214-157X
  • 出版年度:2021
  • 卷号:25
  • 页码:100983
  • DOI:10.1016/j.csite.2021.100983
  • 出版社:Elsevier B.V.
  • 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 [ S H 2 O / G O ] m nanofluid and [ S H 2 O / G O S i O 2 ] 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 (DMOl 3 ) 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 Δ E g O p t values decrease from 2.293 eV for [ S H 2 O / G O ] m mono nanofluid to 1.196 eV for [ S H 2 O / G O S i O 2 ] h hybrid nanofluid using the DFT computations E H O M O and E L U M O calculations. This result concluded that the [ S H 2 O / G O ] m transformed from semiconductor to [ S H 2 O / G O S i O 2 ] h as a super-conductor hybrid nanofluid by adding (SiO 2 nanoparticles).
  • 关键词:[ S H 2 O ;G O S i O 2 ] h ; Characterization properties ; DFT ; Hybrid nanofluid ; Curved surface
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