Hasanuzzaman Md, Akter Sathi, Sharin Shanta, Hossain Md Mosharof, Miyara Akio, Hossain Md Amzad
Department of Mathematics, Khulna University of Engineering & Technology, Khulna, 9203, Bangladesh.
Department of Mathematics, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh.
Heliyon. 2023 Mar 1;9(3):e14207. doi: 10.1016/j.heliyon.2023.e14207. eCollection 2023 Mar.
The effects of radiative and viscous dissipation on the transfer of unsteady magnetic-conductive heat-mass across a vertically porous sheet is studied in this article. The non-dimensional ODEs are solved by applying the Finite Difference Method (FDM) through the MATLAB software numerically. The fluid temperature and velocity enhance for uplifting values of the Eckert number. Enhancing values of the transpiration parameter the velocity, concentration, and temperature distributions reduce. The local skin friction enhances about 9%, and 18% due to increase the Eckert number (0.5-3.0) and Dufour number (0.5-4.0), respectively and reduces 17%, 38%, and 31% due to increase Prandtl number (0.71-7.0), magnetic force parameter (0.5-3.0), and suction parameter (0.5-3.0), respectively. Enhancing values of the Eckert number (0.5-3.0) reduces the heat transfer rate by 40%. The increasing value of the Prandtl number (0.71-7.0) and the suction parameter (0.5-3.0) increases the heat transfer rate by 27% and 92%, respectively. With an increase in the values of the Schmidt number (0.22-0.67), the mass transfer rate increased by approximately 94%. At last, the numerical results of this paper has compared with the previously published paper. We noticed that the comparison has an excellent acceptance.
本文研究了辐射和粘性耗散对不稳定磁传导热质在垂直多孔薄板上传递的影响。通过MATLAB软件应用有限差分法（FDM）对无量纲常微分方程进行数值求解。随着埃克特数的增大，流体温度和速度升高。随着蒸发参数值的增大，速度、浓度和温度分布降低。由于埃克特数（0.5 - 3.0）增加，局部皮肤摩擦分别增大约9%，由于杜福尔数（0.5 - 4.0）增加，局部皮肤摩擦增大18%，而由于普朗特数（0.71 - 7.0）、磁力参数（0.5 - 3.0）和抽吸参数（0.5 - 3.0）增加，局部皮肤摩擦分别降低17%、38%和31%。埃克特数（0.5 - 3.0）增大使传热速率降低40%。普朗特数（0.71 - 7.0）和抽吸参数（0.5 - 3.0）增大分别使传热速率提高27%和92%。随着施密特数（0.22 - 0.67）值的增加，传质速率提高约94%。最后，将本文的数值结果与先前发表的论文进行了比较。我们注意到该比较具有很好的一致性。
