School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China.
Department of Mathematics, University of Sargodha, Sargodha, 40100, Pakistan.
Sci Rep. 2023 Jun 11;13(1):9491. doi: 10.1038/s41598-023-36631-1.
Non-Newtonian fluids are extensively employed in many different industries, such as the processing of plastics, the creation of electrical devices, lubricating flows, and the production of medical supplies. A theoretical analysis is conducted to examine the stagnation point flow of a 2nd-grade micropolar fluid into a porous material in the direction of a stretched surface under the magnetic field effect, which is stimulated by these applications. The stratification boundary conditions are imposed on the surface of the sheet. Generalized Fourier and Fick's laws with activation energy is also considered to discuss the heat and mass transportation. To obtain the dimensionless version of the flow modeled equations, an appropriate similarity variables are used. These transfer version of equations is solved numerically by the implement of the BVP4C technique on MATLAB. The graphical and numerical results are obtained for various emerging dimensionless parameters and discussed. It is noted that by the more accurate predictions of [Formula: see text] and M, the velocity sketch is decreased due to occurrence of resistance effect. Further, it is seen that larger estimation of micropolar parameter improves the angular velocity of the fluid.
非牛顿流体在许多不同的行业中得到了广泛的应用,例如塑料加工、电气设备制造、润滑流动和医疗用品生产。本文进行了理论分析,研究了在磁场作用下,二级微极流体沿拉伸表面向多孔材料的停滞点流动,这些应用刺激了这种流动。在片材表面施加了分层边界条件。广义傅里叶和菲克定律以及激活能也被考虑在内,以讨论热和质量传递。为了获得所建模方程的无量纲版本,使用了适当的相似变量。这些传输版本的方程通过在 MATLAB 上实现 BVP4C 技术进行数值求解。得到了各种新兴无量纲参数的图形和数值结果,并进行了讨论。需要注意的是,由于阻力效应的发生,通过更准确地预测 [公式:见文本] 和 M,速度草图减小。此外,还可以看出,较大的微极参数估计可以提高流体的角速度。