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<p>The enhanced thermal efficiency of hybrid nanofluids has significant applications across various industrial and engineering fields, particularly in systems where improved heat transfer performance is essential. The present study investigates the two-dimensional stagnation point flow of MHD Cu-Al<sub>2</sub>O<sub>3</sub>/H<sub>2</sub>O hybrid nanofluid with convection over an anti-logarithmically stretching/shrinking sheet under velocity and thermal slip conditions. The hybrid nanofluid comprises copper (Cu) and alumina Al<sub>2</sub>O<sub>3</sub> nanoparticles dispersed in water H<sub>2</sub>O as the base fluid. The flow model equations are transformed into ordinary differential equations using similarity transformations and are subsequently solved numerically using MATLAB’s bvp4c solver with the help of the bvp4c 3-stage Lobatto IIIA method. The effects of key parameters on velocity and temperature profiles are analyzed and discussed graphically. The results reveal that increasing the slip parameter enhances the velocity in both solution branches, while a higher thermal slip parameter leads to a reduction in temperature profiles. The suction parameter increases the velocity in the first solution but decreases it in the second. Moreover, an increase in magnetic field strength results in lower velocity and temperature profiles for both solutions. The temperature decreases with higher suction and Prandtl number values, whereas an increase in copper volume fraction enhances the temperature field and reduces the velocity. Furthermore, the present results were compared with previously published studies, and the numerical outcomes exhibited excellent agreement, thereby validating the reliability of the current analysis.</p>

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Stagnation point flow of Cu-Al2O3/H2O hybrid nano-fluid with MHD convection over an anti-logarithmically stretching/shrinking sheet under velocity and thermal slips

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  • 出版模式：

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  • 发表日期：

    2025年11月11日

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  • Sandhya Palmur,
  • Imran Chandarki,
  • B. Venkateswarlu

摘要

The enhanced thermal efficiency of hybrid nanofluids has significant applications across various industrial and engineering fields, particularly in systems where improved heat transfer performance is essential. The present study investigates the two-dimensional stagnation point flow of MHD Cu-Al2O3/H2O hybrid nanofluid with convection over an anti-logarithmically stretching/shrinking sheet under velocity and thermal slip conditions. The hybrid nanofluid comprises copper (Cu) and alumina Al2O3 nanoparticles dispersed in water H2O as the base fluid. The flow model equations are transformed into ordinary differential equations using similarity transformations and are subsequently solved numerically using MATLAB’s bvp4c solver with the help of the bvp4c 3-stage Lobatto IIIA method. The effects of key parameters on velocity and temperature profiles are analyzed and discussed graphically. The results reveal that increasing the slip parameter enhances the velocity in both solution branches, while a higher thermal slip parameter leads to a reduction in temperature profiles. The suction parameter increases the velocity in the first solution but decreases it in the second. Moreover, an increase in magnetic field strength results in lower velocity and temperature profiles for both solutions. The temperature decreases with higher suction and Prandtl number values, whereas an increase in copper volume fraction enhances the temperature field and reduces the velocity. Furthermore, the present results were compared with previously published studies, and the numerical outcomes exhibited excellent agreement, thereby validating the reliability of the current analysis.