论文标题

辐射和滑动条件对纳米流体的MHD流动的影响,经过指数伸展的表面

Impact of Radiation and Slip Conditions on MHD Flow of Nanofluid Past an Exponentially Stretched Surface

论文作者

Sharma, Diksha, Sood, Shilpa

论文摘要

当前的研究建立了磁水动力学(MHD)边界层流动,并在嵌入多孔培养基中的指数延伸片上,纳米流体的热量和质量转移。在此探索过程中,募集了纳米颗粒,单壁碳纳米管(SWCNT)和多壁碳纳米管(MWCNT),而将灯油用作纳米材料扩散的基础流体。包括温暖辐射和倾斜磁场的影响。此外,本研究纳入了速度载玻片和热升高,而不是表面上的无滑动假设。实现相似性转换以使一组部分微分方程适应非线性普通微分方程系统。 BVP4C求解器和Keller-box方法用于数值上的非线性普通微分方程。在视觉上探测并深入解决突出参数,例如Darcy Forchheimer模型,磁场,辐射,抽吸,速度滑动和温度跳跃的重要性。实际上,SWCNT和MWCNT的皮肤摩擦系数和热运输的百分比(Nusselt编号)的演变以表格形式呈现。随着磁参数的上升,温度会上升。随着热滑动参数的提高,温度已被降低。结果表明,与MWCNT相比,SWCNT产生的皮肤摩擦和热转化速度更高。

The current research establishes magnetohydrodynamics (MHD) boundary layer flow with heat and mass transfer of a nanofluid over an exponentially extending sheet embedded in a porous medium. During this exploration, nanoparticles, single-wall carbon nanotubes (SWCNTs) and multi-wall carbon nanotubes (MWCNTs) are recruited, while lamp fuel oil is being utilised as a base fluid for the diffusion of nano materials. The effects of warm radiation and an inclined magnetic field are included. In addition, rather than no-slip assumptions at the surface, velocity slides as well as thermal upsurge are incorporated in this study. Similarity transformations are implemented to adapt a set of partial differential equations into a system of non-linear ordinary differential equations. The bvp4c solver and Keller-box approach are employed to tackle nonlinear ordinary differential equations numerically. The significance of prominent parameters such as the Darcy Forchheimer model, magnetic field, radiation, suction, velocity slip, and temperature jump is visually probed and addressed in depth. In fact, the evolution of the coefficient of skin friction and percentage of heat shipping (Nusselt number) for both SWCNTs and MWCNTs is presented in tabular form. The temperature goes up as the magnetic parameter rises. Temperature has been seen to be decreased as the thermal slip parameter is improved. The results indicate that SWCNTs yield a higher coefficient of skin friction and speed of heat transformation than MWCNTs.

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