Numerical Simulation of Mixed Convection Squeezing Flow of a Hybrid Nanofluid Containing Magnetized Ferroparticles in 50%:50% of Ethylene Glycol-Water Mixture Base Fluids Between Two Disks With the Presence of a Non-linear Thermal Radiation Heat Flux.
Numerical Simulation of Mixed Convection Squeezing Flow of a Hybrid Nanofluid Containing Magnetized Ferroparticles in 50%:50% of Ethylene Glycol-Water Mixture Base Fluids Between Two Disks With the Presence of a Non-linear Thermal Radiation Heat Flux.
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DOI：
10.3389/fchem.2020.00792
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发表时间：
2020
影响因子：
5.5
通讯作者：
Baleanu D
中科院分区：
文献类型：
--
作者：
Nisar KS;Khan U;Zaib A;Khan I;Baleanu D
铁磁液体是磁性纳米材料和普通液体的胶体悬浮液的一个例子。这些流体在医学科学中有许多应用，例如细胞分离、药物靶向、磁共振成像等。混合纳米流体是通过将多于一种类型的纳米颗粒的磁性纳米材料分散在基础流体中而组成的。它具有散热、动态密封、阻尼等不同的科学应用。由于铁磁流体的广泛应用，本次分析首次探讨了混合铁磁流体在非线性辐射和混合对流影响下两个圆盘内随时间变化的挤压流动。在这里，钴和磁铁矿铁磁流体被考虑分散在 50%:50% 的水-EG（乙二醇）混合物中。相似技术用于将主要偏微分方程简化为耦合非线性常微分方程。通过 Matlab 求解器 bvp4c 对变换后的方程以及推荐的边界限制进行数值求解。考虑了相反的和辅助的流动。通过不同的图形辅助工具检查新兴参数对混合铁磁液体的流体速度和温度场的影响。结果表明，在辅助流和反向流的情况下，由于磁力对温度和速度的影响，观察到相反的趋势。由于辅助流中纳米粒子的体积分数，速度增加，而反向流中速度下降，而在温度场中观察到相反的方向。
Ferroliquids are an example of a colloidal suspension of magnetic nanomaterials and regular liquids. These fluids have numerous applications in medical science such as cell separation, targeting of drugs, magnetic resonance imaging, etc. The hybrid nanofluid is composed by scattering the magnetic nanomaterial of more than one type nanoparticles suspended into the base fluid. It has different scientific applications such as heat dissipation, dynamic sealing, damping, etc. Owing to the vast ferrofluid applications, the time-dependent squeezed flow of hybrid ferroliquids under the impact of non-linear radiation and mixed convection within two disks was explored for the first time in this analysis. Here, the cobalt and magnetite ferrofluids are considered and scattered in a 50%:50% mixture of water–EG (ethylene glycol). The similarity technique is used to reduce the leading PDEs into coupled non-linear ODEs. The transmuted equations together with recommended boundary restrictions are numerically solved via Matlab solver bvp4c. The opposing and assisting flows are considered. The impacts of an emerging parameter on fluid velocity and temperature field of hybrid ferroliquids are examined through the different graphical aids. The results showed that the opposite trend is scrutinized due to the magnetic influence on the temperature and velocity in the case of assisting and opposing flows. The velocity augments due to the volume fraction of nanoparticles in the assisting flow and declines in the opposing flow, while the opposite direction is noticed in the temperature field.