The present investigation signifies the Second grade nanofluid stream with porous media, viscous dissipation, joule heating and thermal radiation effects over a moving flat horizontal surface with entropy analysis. This study presents a novel idea regarding the implementation of single phase (Tiwari and Das) model on Second grade fluid model by considering Engine Oil $(EO$) as a base fluid. Single phase model considers nanoparticles volume fraction for heat transfer enhancement instead of the Buongiorno model which heavily relies on thermophoresis and Brownian diffusion effects for heat transfer analysis. The velocity slip and convective slip boundary conditions have been employed at the surface of the sheet. By utilizing the suitable transformations, the modeled PDEs (partial-differential equations) are renewed in ODEs (ordinary-differential equations) and treated these equations analytically with the help of Variation Iteration Method (VIM). Two different classes of nanofluids, Copper-engine oil $(Cu-EO)$ and Titanium oxide-engine oil ($Ti{O}_2-EO$) have been taken into considering for our analysis. The behavior of surface drag coefficient and Nusselt number for the varied values of various sundry parameters is designed via tables. Our findings show that an increase in the Reynolds and Brinkman numbers increased the overall entropy of the system. Moreover, the stricking outcome of the current study is that due to the heavier density of the Cu nanoparticle the inclusion of nanoparticle volume fraction retards the flow profile and though Cu is a good conductor of heat it boosts up the fluid temperature throughout the domain.

本研究表明二级纳米流体流具有多孔介质、粘性耗散、焦耳热和热辐射效应在移动的平坦水平表面上的熵分析。本研究通过考虑发动机油，提出了在二级流体模型上实施单相（Tiwari 和 Das）模型的新想法$(乙哦$) 作为基液。单相模型考虑纳米颗粒体积分数来增强传热，而不是 Buongiorno 模型，后者在传热分析中严重依赖热泳和布朗扩散效应。板表面采用速度滑移和对流滑移边界条件。通过利用合适的变换，建模的 PDE（偏微分方程）在 ODE（常微分方程）中更新，并在变分迭代法 (VIM) 的帮助下对这些方程进行分析处理。两种不同类别的纳米流体，铜发动机油$(C你-乙哦)$ 和氧化钛发动机油（$吨\mathrm{一世}{哦}_2-乙哦$) 已被考虑用于我们的分析。通过表格设计了表面阻力系数和努塞尔数对各种杂物参数变化值的行为。我们的研究结果表明，雷诺数和布林克曼数的增加会增加系统的整体熵。此外，当前研究的惊人结果是，由于 Cu 纳米颗粒的密度较大，纳米颗粒体积分数的加入会延迟流动剖面，尽管 Cu 是热的良导体，但它会提高整个域的流体温度。