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首页> 外文期刊>Journal of Nanofluids >Radiative Non-Coaxial Rotation of Magnetohydrodynamic Newtonian Carbon Nanofluid Flow in Porous Medium with Heat and Mass Transfer Effects
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Radiative Non-Coaxial Rotation of Magnetohydrodynamic Newtonian Carbon Nanofluid Flow in Porous Medium with Heat and Mass Transfer Effects

机译：辐射引起的旋转磁流体动力牛顿碳Nanofluid流动与传热传质多孔介质影响

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摘要

Non-coaxial rotation system has encountered in various fields such as engineering field in designing advanced cooling and heating system, food processing and mixer machines. In the present study, the effect of the non-coaxial rotation of a vertical disk on the heat and mass transfer of Newtonian nanofluids in a porous medium is analytically discussed. The influence of the magnetic field and thermal radiation is also taken into the consideration. Two different types of nanofluids which are single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) with water as the base fluid are analyzed and compared. Suitable dimensionless variables are utilized to convert the governing partial differential equations associated with the initial and boundary conditions into the dimensionless form. Then, the exact solutions of the dimensionless governing equations are calculated by using the Laplace transform method. A limiting case study of the obtained analytical solutions is constructed to compare with the previously published results to verify its validity. The distributions of the velocity, temperature, and concentration along with the Skin friction, Nusselt number, and Sherwood number due to the variation of the pertinent parameters are displayed and scrutinized through graphs and tables. In the frame of non-coaxial rotation, the nanofluid with the SWCNTs nanoparticles have illustrated a higher rate of heat transfer as compared to MWCNTs nanofluid. Moreover, the heat transmission in the nanofluid has been enhanced by increasing the volume fraction of the nanoparticle and also the intensity of the radiation. This suggests that heating or cooling in a system such as a nuclear reactor can be improved by properly selecting the type of the nanofluid and also the volume fraction of the nanoparticle.
机译：结合旋转系统中遇到工程领域等各个领域设计先进的冷却和加热系统,食品加工和混合器的机器。目前的研究,结合试验的影响垂直旋转磁盘上的热量和质量牛顿在多孔纳米流体媒介是分析讨论。的磁场和热辐射也纳入考虑。类型的单壁纳米流体碳纳米管(SWCNTs)和多壁碳纳米管(热合)以水为基液进行了分析和比较。变量是用来转换管理相关的偏微分方程初始和边界条件无量纲的形式。的无量纲控制方程利用拉普拉斯变换方法计算。的极限情况研究分析获得构造解决方案比较的先前发表的结果来验证它有效性。温度和浓度的表面摩擦、努塞尔数和舍伍德由于数量的变化相关参数显示和审查通过图和表。旋转,nanofluid SWCNTs纳米粒子有了更高的速度传热与热合nanofluid相比。此外,在nanofluid传热增强了增加卷纳米颗粒和分数辐射的强度。加热或冷却系统中,比如核反应堆可以提高了正确的选择nanofluid类型和体积纳米颗粒的分数。

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