The present article gives an analysis of the impact of Darcy–Forchheimer flow and partial slip along with heat transfer in single-wall carbon nanotube/multi-wall carbon nanotube (SWCNT/MWCNT)-water nanofluid flow over a stretching/shrinking rotating disk. The study considers the heat transfer in nanofluids, using both static and dynamic models, namely the Xue and Buongiorno models, respectively. The effects of thermal radiation and viscous dissipation are considered. Nonlinear transformed coupled equations are solved computationally using a spectral quasilinearisation method. The numerical results show the impact of several physical parameters on radial and tangential velocity, temperature and nanoparticle concentration fields. The slip parameter accounts for a significant enhancement in the radial velocity and a decline in the tangential/azimuthal velocity. The presence of a porous medium has the effect of reducing the amplitude of velocity and momentum layer thickness for both SWCNTs-water and MWCNTs-water nanofluids. The present study indicates that the tangential velocity of SWCNT/MWCNT-water nanofluids diminishes due to the increment in slip parameter, while the radial velocity exhibits the reverse trends. The results also show that the involvement of a porous matrix gives rise to reduced velocity of SWCNT/MWCNT-water nanofluids. It is also observed that MWCNTs make a greater contribution in augmenting the heat transfer rate compared to SWCNT nanoparticles.

中文翻译：

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由于旋转盘的拉伸/收缩，单壁碳纳米管/多壁碳纳米管悬浮液在 Darchy-Forchheimer 纳米流体流动中的热力学效应：Buongiorno 两相模型

本文分析了单壁碳纳米管/多壁碳纳米管 (SWCNT/MWCNT)-水纳米流体在拉伸/收缩旋转盘上的达西-福希海默流和部分滑移以及传热的影响。该研究考虑了纳米流体中的传热，分别使用静态和动态模型，即 Xue 和 Buongiorno 模型。考虑了热辐射和粘性耗散的影响。非线性变换耦合方程使用谱准线性化方法计算求解。数值结果显示了几个物理参数对径向和切向速度、温度和纳米粒子浓度场的影响。滑移参数解释了径向速度的显着增强和切向/方位角速度的下降。多孔介质的存在具有降低单壁碳纳米管-水和多壁碳纳米管-水纳米流体的速度幅度和动量层厚度的效果。目前的研究表明，SWCNT/MWCNT-water 纳米流体的切向速度由于滑移参数的增加而减小，而径向速度则呈现相反的趋势。结果还表明，多孔基质的参与导致 SWCNT/MWCNT-水纳米流体的速度降低。还观察到，与单壁碳纳米管纳米粒子相比，多壁碳纳米管在提高传热速率方面做出了更大的贡献。多孔介质的存在具有降低单壁碳纳米管-水和多壁碳纳米管-水纳米流体的速度幅度和动量层厚度的效果。目前的研究表明，SWCNT/MWCNT-water 纳米流体的切向速度由于滑移参数的增加而减小，而径向速度则呈现相反的趋势。结果还表明，多孔基质的参与导致 SWCNT/MWCNT-水纳米流体的速度降低。还观察到，与单壁碳纳米管纳米粒子相比，多壁碳纳米管在提高传热速率方面做出了更大的贡献。多孔介质的存在具有降低单壁碳纳米管-水和多壁碳纳米管-水纳米流体的速度幅度和动量层厚度的效果。目前的研究表明，SWCNT/MWCNT-water 纳米流体的切向速度由于滑移参数的增加而减小，而径向速度则呈现相反的趋势。结果还表明，多孔基质的参与导致 SWCNT/MWCNT-水纳米流体的速度降低。还观察到，与单壁碳纳米管纳米粒子相比，多壁碳纳米管在提高传热速率方面做出了更大的贡献。而径向速度则呈现相反的趋势。结果还表明，多孔基质的参与导致 SWCNT/MWCNT-水纳米流体的速度降低。还观察到，与单壁碳纳米管纳米粒子相比，多壁碳纳米管在提高传热速率方面做出了更大的贡献。而径向速度则呈现相反的趋势。结果还表明，多孔基质的参与导致 SWCNT/MWCNT-水纳米流体的速度降低。还观察到，与单壁碳纳米管纳米粒子相比，多壁碳纳米管在提高传热速率方面做出了更大的贡献。