应用拉普拉斯变换研究碳纳米管悬浮纳米流体在对流条件下的流动

Hoda Saleh, Elham Alali, Abdelhalim Ebaid
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引用次数: 52

摘要

在纳米医学中,利用碳纳米管(CNTs)作为药物载体的尝试正在进行,特别是在癌症的治疗中。这些(碳纳米管)首先被注射到血液中,然后在磁场或激光束等外力作用下由动脉壁传播的波的作用下到达肿瘤细胞。在动脉边界附近的流动可以被视为边界层流动,只是为了简化,我们在这里考虑。在应用科学中,碳纳米管的流动和传热通常用非线性微分方程系统来描述。由于系统的非线性,在大多数情况下不能得到精确解。本文提出了一种有效的解析方法,用于推导描述吸力/注入作用下对流热条件对碳纳米管悬浮纳米流体流动和传热影响的非线性微分方程组的精确解。采用拉普拉斯变换对传热方程进行求解,并用广义不完全函数表示。并证明了在不考虑吸力/喷射和对流参数的情况下,现有的流动和换热的精确解与文献中的精确解基本一致。结果表明,温度分布对对流参数的取值非常敏感。此外,还通过图形显示了其他物理参数对所研究现象的影响。此外,本文还讨论了现有结果的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Medical applications for the flow of carbon-nanotubes suspended nanofluids in the presence of convective condition using Laplace transform

In nano-medicine, attempts of using the carbon-nanotubes (CNTs) as drug-carriers are undertaken especially in the treatment of cancer. These (CNTs) are first injected into the blood which then reach the tumor cite under the actions of the waves propagated by the walls of the arteries with an external force such as a magnetic field or laser beams. The flow near the boundary of the artery may be treated as a boundary layer flow only for simplification as we consider here. In applied science, the flow and heat transfer of CNTs are usually described by systems of nonlinear differential equations. Due to nonlinearities, the exact solutions of such systems cannot be obtained in most cases. In this paper, an effective analytical procedure is proposed to deduce the exact solution of a system of nonlinear differential equations describing the effect of a convective heat condition on the flow and the heat transfer of carbon-nanotube suspended nanofluids with suction/injection in the presence of a magnetic field. The heat transfer equation is solved via applying Laplace transform and the solution is expressed in terms of the generalized incomplete gamma function. Also, it is proved that the present exact solutions for the flow and the heat transfer reduce to those in literature in the absence of the suction/injection and the convective parameters. The results declare that the temperature profiles are very sensitive regarding the value assigned to the convective parameter. Moreover, the effects of other physical parameters on the studied phenomena are displayed through graphs. Besides, possible applications of the current results have been also discussed.

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