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<p>Nanolayer effects on nanoparticles tend to describe special properties and behavior that occur when nanoparticles are coated with thin (nanoscale thickness) films of other substances. Significance of these effects cannot be avoided because such films can drastically change the optical, electrical, magnetic, or chemical characteristics of the nanoparticles which substantially contribute in thermal management systems. Enhanced thermal fluids have numerous applications including chemical, reactors, power plant and thermal engineering etc. Hence, a theoretical model for comparative analysis of Al<sub>2</sub>O<sub>3</sub>/H<sub>2</sub>O and CuO/ H<sub>2</sub>O nanofluids under drastic effects of Darcy, exponential, thermal radiations, heat generation, Biot number and suction/injection numbers is conducted. The problem materials comprised the use of transformative functions and enhanced characteristics of both nanofluids and then analyzed numerically by exercising ND-Solve solver. Increasing <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\alpha \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>α</mi> </math></EquationSource> </InlineEquation> results is depreciation of Al<sub>2</sub>O<sub>3</sub>/H<sub>2</sub>O and CuO/H<sub>2</sub>O by reducing the thermal boundary layer while suction increases the system’s cooling. The Biot number enhances the efficiency by increasing convective heat in all three cases of suction, injection and absence of suction/injection. Further, the considerable role of <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(Q\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>Q</mi> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(Rd\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi mathvariant="italic">Rd</mi> </mrow> </math></EquationSource> </InlineEquation> is examined for thermal management in nanofluidic system with prescribed parametric ranges. The rate of heat transfer in Al<sub>2</sub>O<sub>3</sub>/H<sub>2</sub>O and CuO/H<sub>2</sub>O rises as the <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(Rd\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi mathvariant="italic">Rd</mi> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\alpha \)</EquationSource> <EquationSource Format="MATHML"><math> <mi>α</mi> </math></EquationSource> </InlineEquation> become strengthen and increasing <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(S\)</EquationSource> <EquationSource Format="MATHML"><math> <mi>S</mi> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\({D}_{a}\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>D</mi> <mi>a</mi> </msub> </math></EquationSource> </InlineEquation> reduces the SFC by reducing the boundary layer thickness and improving the flow permeability.</p>

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Investigation of thermal nanofluids inspired by the nanolayer effects around (Al2O3, CuO) and solar radiations over a convective permeable domain: comparative analysis

  • 期刊论文

  • 发表日期：

    2025年7月21日

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  • Adnan,
  • Sami Ullah Khan,
  • Dana Mohammad Khidhir,
  • Taoufik Saidani,
  • Yasir Khan,
  • Iskander Tlili

摘要

Nanolayer effects on nanoparticles tend to describe special properties and behavior that occur when nanoparticles are coated with thin (nanoscale thickness) films of other substances. Significance of these effects cannot be avoided because such films can drastically change the optical, electrical, magnetic, or chemical characteristics of the nanoparticles which substantially contribute in thermal management systems. Enhanced thermal fluids have numerous applications including chemical, reactors, power plant and thermal engineering etc. Hence, a theoretical model for comparative analysis of Al2O3/H2O and CuO/ H2O nanofluids under drastic effects of Darcy, exponential, thermal radiations, heat generation, Biot number and suction/injection numbers is conducted. The problem materials comprised the use of transformative functions and enhanced characteristics of both nanofluids and then analyzed numerically by exercising ND-Solve solver. Increasing \(\alpha \) α results is depreciation of Al2O3/H2O and CuO/H2O by reducing the thermal boundary layer while suction increases the system’s cooling. The Biot number enhances the efficiency by increasing convective heat in all three cases of suction, injection and absence of suction/injection. Further, the considerable role of \(Q\) Q and \(Rd\) Rd is examined for thermal management in nanofluidic system with prescribed parametric ranges. The rate of heat transfer in Al2O3/H2O and CuO/H2O rises as the \(Rd\) Rd and \(\alpha \) α become strengthen and increasing \(S\) S and \({D}_{a}\) D a reduces the SFC by reducing the boundary layer thickness and improving the flow permeability.