Heat Transfer Analysis of Nanostructured Material Flow over an Exponentially Stretching Surface: A Comparative Study

Nanomaterials

Thabet Abdeljawad¹  Ilyas Khan²  Mubashar Arshad³  Ali Hassan³  Azad Hussain³  Sadok Mehrez⁴  Mohamed Badran⁵  Ahmed M. Galal⁶  Ashraf Elfasakhany⁷ 

[1] Department of Mathematics and Sciences, Prince Sultan University, Riyadh 11586, Saudi Arabia;Department of Mathematics, College of Science Al-Zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia;Department of Mathematics, University of Gujrat, Gujrat 50700, Pakistan;Department of Mechanical Engineering, College of Engineering at Al Kharj, Prince Sattam bin Abdulaziz University, Al-Kharj 16273, Saudi Arabia;Department of Mechanical Engineering, Faculty of Engineering & Technology, Future University in Egypt, New Cairo 11845, Egypt;Mechanical Engineering Department, College of Engineering, Prince Sattam Bin Abdulaziz University, Wadi Addawaser 11991, Saudi Arabia;Mechanical Engineering Department, College of Engineering, Taif University, 11099, Taif 21944, Saudi Arabia;

关键词: nanofluid;    heat transfer;    three-dimensional flow;    exponential surface;    silver;    zinc;   

DOI  :  10.3390/nano12071204

来源: DOAJ

【 摘 要 】

The objective of the present research is to obtain enhanced heat and reduce skin friction rates. Different nanofluids are employed over an exponentially stretching surface to analyze the heat transfer coefficients. The mathematical model for the problem has been derived with the help of the Rivilin–Erickson tensor and an appropriate boundary layer approximation theory. The current problem has been tackled with the help of the boundary value problem algorithm in Matlab. The convergence criterion, or tolerance for this particular problem, is set at 10⁻⁶. The outcomes are obtained to demonstrate the characteristics of different parameters, such as the temperature exponent, volume fraction, and stretching ratio parameter graphically. Silver-water nanofluid proved to have a high-temperature transfer rate when compared with zinc-water and copper-water nanofluid. Moreover, the outcomes of the study are validated by providing a comparison with already published work. The results of this study were found to be in complete agreement with those of Magyari and Keller and also with Lui for heat transfer. The novelty of this work is the comparative inspection of enhanced heat transfer rates and reduced drag and lift coefficients, particularly for three nanofluids, namely, zinc-water, copper-water, and silver-water, over an exponentially stretching. In general, this study suggests more frequent exploitation of all the examined nanofluids, especially $\mathrm{Ag}$-water nanofluid. Moreover, specifically under the obtained outcomes in this research, the examined nanofluid, Ag-water, has great potential to be used in flat plate solar collectors. Ag-water can also be tested in natural convective flat plate solar collector systems under real solar effects.

【 授权许可】

Unknown