Nanofluid is treated as a smart fluid that is useful for heat and mass transfer enhancement, which is paramount in several electronics, biomedical, transportation as well as industrial applications. In view of this, in the current analysis we scrutinize the flow of nanofluid over a curved stretching sheet. The noted novelty of this work is to discuss the heat and mass transfer in nanofluid flow along with the activation energy. Further, CuO with water-based nanofluid is considered in the modelling. The viscosity and effective thermal conductivity of fluid flow suspended by nanoparticles are scrutinized by Koo–Kleinstreuer–Li (KKL) model. By employing suitable similarity transformations, the governing equations of momentum, thermal and concentration of nanoparticle are converted into ordinary differential equations and then they are solved with Runge–Kutta-Fehlberg-45 (RKF-45) process along with shooting method. The impact of pertinent non-dimensional parameters is attained and illustrated with the help of graphs. The results reveal that, the heightening of Biot number and curvature parameter heightens the thermal gradient. The mass transfer decreases as the Schmidt number and chemical reaction rate parameter increases. The upsurge in activation energy parameter declines the mass transfer.

纳米流体被视为智能流体是对传热和传质的提升，这是最重要的几个电子，生物医药，交通运输以及工业应用。鉴于此，在目前的分析中，我们仔细检查纳米流体在弯曲拉伸片的流动。这项工作的指出新颖之处在于与活化能一起讨论纳米流体流动传热和传质。此外，氧化铜与水性纳米流体在模型制作中考虑。Koo-Kleinstreuer-Li (KKL) 模型详细研究了由纳米颗粒悬浮的流体流的粘度和有效热导率。通过采用合适的相似变换，动量，热和纳米颗粒的浓度控制方程转换为普通微分方程，然后它们与龙格 - 库塔 - Fehlberg-45（RKF-45）处理带有拍摄方法一起解决。相关的无量纲参数的影响达到并与图的帮助下说明。结果表明：，毕奥数和曲率参数的加高加剧的热梯度。传质作为Schmidt数和化学反应速率参数的增加而减小。