碳纳米管悬浮灰尘纳米流体在具有非均匀热源/汇的拉伸多孔旋转盘上流动

R. Naveen Kumar, H. B. Mallikarjuna, Nirmala Tigalappa, R. J. Punith Gowda, Deepak Umrao Sarwe
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引用次数: 37

摘要

摘要本文研究了含尘纳米液体在具有非均匀散热器/热源的旋转可拉伸圆盘上的流动。此外,我们还对单壁碳纳米管(SWCNT)-水和多壁碳纳米管(MWCNT)-水的粉尘流体流动进行了比较研究。通过适当的相似变量,将控制方程转化为非线性常微分方程,然后采用射击技术,采用龙格-库塔-费贝格四阶五阶(RKF45)方法对控制方程进行数值求解。通过适当的图表,结合无量纲参数对传热场的影响进行了广泛的讨论。此外,在切向,径向和流体和颗粒的换热率的减小剪切应力在磁盘上进行了图形化审议。结果表明,随空间和温度变化的热源/汇参数值的增大,两种液体的传热都得到了改善。与mwcnt -水基流体相比,swcnts -水基流体在切向和径向上都表现出更好的剪切应力。无论是流体相还是粉尘相,swcnts -水基流体的传热速率都高于mwcnts -水基流体。
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Carbon nanotubes suspended dusty nanofluid flow over stretching porous rotating disk with non-uniform heat source/sink
Abstract The current paper explores the flow of dusty nanoliquid over a rotating and stretchable disk with non-uniform heat sink/source. Further, we have done a comparative study on Single wall carbon nanotubes (SWCNT)-water and multi wall carbon nanotubes (MWCNT)-water based dusty fluid flows. By means of apt similarity variables, the governing equations are converted to set of nonlinear ordinary differential equations and then they are numerically tackled using Runge–Kutta–Fehlberg’s fourth fifth order (RKF45) method by adopting shooting technique. The influence of non-dimensional parameters on the heat transfer fields are incorporated and extensively discussed by means of appropriate graphs. Further, the reduced shear stresses at the disk in the tangential direction, in the radial direction and the heat transference rates of the fluid and particles are deliberated graphically. Results reveal that, the escalating values of space and temperature dependent heat source/sink parameters improves the heat transference of both liquids. The SWCNT-water based fluid shows improved shear stress in tangential and radial direction when compared to MWCNT-water based fluid for both the phases. The SWCNT-water based fluid shows enhanced heat transfer rate than MWCNT-water based fluid for both fluid and dust phases.
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