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Simultaneous Influence of Hall and Wall Characteristics in Peristaltic Convective Carbon–Water Flow Subject to Soret and Dufour Effects
Arabian Journal for Science and Engineering ( IF 2.9 ) Pub Date : 2020-10-16 , DOI: 10.1007/s13369-020-05017-0
Zakir Hussain , Taseer Muhammad

Peristalsis of carbon nanotubes (SWCNTs, MWCNTs) submerged in water through an inclined asymmetric channel is addressed in the current work. Such mechanism is disclosed in the presence of Hall effect, viscous dissipation, and Soret and Dufour effects. Convective heat transfer at the boundaries is incorporated by utilizing efficient thermal conductivity of nanoliquid. Low Reynolds number and long wavelength approximation are used for mathematical modeling. Resulting nonlinear set of equations is solved for pressure gradient, velocity, temperature and concentration. Impact of various variables on the axial velocity, pressure rise, pressure gradient, temperature, concentration, heat transport at boundaries and streamlines are discussed via their respective curves. Comparison between SWCNTs (single-wall carbon nanotubes) and MWCNTs (multiwall carbon nanotubes) is documented. Furthermore, submerging carbon nanotubes in water declines the velocity and temperature. In addition, heat transfer at the boundaries enhances by increasing volume fraction of carbon nanotubes. SWCNTs nanofluid shows higher velocity and concentration when compared with MWCNTs nanofluid. MWCNTs nanoliquid displays higher temperature than SWCNTs nanoliquid.



中文翻译:

霍尔和壁特性同时受索雷特和杜福尔效应的蠕动对流碳水流动的同时影响

在当前工作中解决了通过倾斜的不对称通道浸没在水中的碳纳米管(SWCNT,MWCNT)的持久性。在霍尔效应,粘性耗散以及索雷特和杜福尔效应的存在下公开了这种机制。通过利用纳米液体的有效导热率,在边界处引入对流传热。低雷诺数和长波长近似用于数学建模。解决了所得的非线性方程组的压力梯度,速度,温度和浓度。通过各自的曲线讨论了各种变量对轴向速度,压力升高,压力梯度,温度,浓度,边界和流线处的热传递的影响。记录了SWCNT(单壁碳纳米管)和MWCNT(多壁碳纳米管)之间的比较。此外,将碳纳米管浸入水中会降低速度和温度。另外,边界处的热传递通过增加碳纳米管的体积分数而增强。与MWCNTs纳米流体相比,SWCNTs纳米流体显示出更高的速度和浓度。MWCNTs纳米液体显示出比SWCNTs纳米液体更高的温度。

更新日期:2020-10-17
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