Numerical analysis of heat and mass transfer along a stretching wedge surface

IF 1.2 Q3 ENGINEERING, MARINE
M. Ali, M. A. Alim, R. Nasrin, M. Alam
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引用次数: 9

Abstract

In this work, the effects of dimensionless parameters on the velocity field, thermal field and nanoparticle concentration have been analyzed. In this respect, the magnetohydrodynamic (MHD) boundary layer nanofluid flow along a moving wedge is considered. Therefore, a similarity solution has been derived like Falkner – Skan solution and identified the point of inflexion. So the governing partial differential equations transform into ordinary differential equations by using the similarity transformation. These ordinary differential equations are numerically solved using fourth order Runge–Kutta method along with shooting technique. The present results have been shown graphically and in tabular form. From the graph, the results indicate that the velocity increases with increasing values of pressure gradient, magnetic induction and velocity ratio. The temperature decreases for velocity ratio, Brownian motion and Prandtl number but opposite result arises for increasing values of thermophoresis. The nanoparticle concentration decreases with an increase in pressure gradient, Brownian motion and Lewis number, but increases for thermophoresis. Besides, the solution of nanoparticle concentration exists in the case of Brownian motion is less than 0.2, thermophoresis is less than 0.14 and lewis number is greater than 1.0. Finally, for validity and accuracy the present results have been compared with previous work and found to be in good agreement.
拉伸楔表面传热传质的数值分析
本文分析了无量纲参数对速度场、热场和纳米颗粒浓度的影响。在这方面,考虑了磁流体动力学(MHD)边界层纳米流体沿着移动楔的流动。因此,类似Falker-Skan解的相似解被推导出来,并确定了拐点。因此,利用相似变换将控制偏微分方程转化为常微分方程。这些常微分方程是用四阶龙格-库塔方法和射击技术数值求解的。结果表明,随着压力梯度、磁感应和速比的增大,速度增大。温度随着速度比、布朗运动和普朗特数的增加而降低,但随着热泳值的增加而出现相反的结果。纳米颗粒浓度随着压力梯度、布朗运动和路易斯数的增加而降低,但随着热泳的增加而增加。此外,在布朗运动小于0.2、热泳小于0.14和路易斯数大于1.0的情况下,存在纳米颗粒浓度的溶液。最后,为了验证有效性和准确性,将目前的结果与以前的工作进行了比较,结果一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.50
自引率
5.60%
发文量
0
审稿时长
20 weeks
期刊介绍: TJPRC: Journal of Naval Architecture and Marine Engineering (JNAME) is a peer reviewed journal and it provides a forum for engineers and scientists from a wide range of disciplines to present and discuss various phenomena in the utilization and preservation of ocean environment. Without being limited by the traditional categorization, it is encouraged to present advanced technology development and scientific research, as long as they are aimed for more and better human engagement with ocean environment. Topics include, but not limited to: marine hydrodynamics; structural mechanics; marine propulsion system; design methodology & practice; production technology; system dynamics & control; marine equipment technology; materials science; under-water acoustics; satellite observations; and information technology related to ship and marine systems; ocean energy systems; marine environmental engineering; maritime safety engineering; polar & arctic engineering; coastal & port engineering; aqua-cultural engineering; sub-sea engineering; and specialized water-craft engineering. International Journal of Naval Architecture and Ocean Engineering is published quarterly by the Society of Naval Architects of Korea. In addition to original, full-length, refereed papers, review articles by leading authorities and articulated technical discussions of highly technical interest are also published.
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