Numerical computation of Brownian motion and thermophoresis effects on rotational micropolar nanomaterials with activation energy

Hassan Waqas ^a, Shan Ali Khan ^b, Bagh Ali ^c, Dong Liu ^a,*, Taseer Muhammad ^d, Enran Hou ^e

a. School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
         b. Department of Mathematics, Government College University Faisalabad, Layyah Campus 31200, Pakistan
         c. Faculty of Computer Science and Information Technology, Superior University, Lahore 54000, Pakistan
         d. Department of Mathematics, College of Sciences, King Khalid University, Abha 61413, Saudi Arabia
         e. College of Mathematics, Huaibei Normal University, Huaibei 235000, China

Abstract: The current article investigates the numerical study of the micropolar nanofluid flow through a 3D rotating surface. This communication may manipulate for the aim such as the delivery of the drug, cooling of electronic chips, nanoscience and the fields of nanotechnology. The impact of heat source/sink is employed. Brownian motion and thermophoresis aspects are discussed. The rotating sheet with the impacts of Darcy-Forchheimer law is also scrutinized. Furthermore, the influence of activation energy is analyzed in the current article. The numerical analysis is simplified with the help of befitted resemblance transformations. The succor of the shooting algorithm with built-in solver bvp4c MATLAB software is used for the numerical solution of nonlinear transformed equations. The consequences of different physical factors on the physical engineering quantities and the subjective fields were examined and presented. According to outcomes, it can be analyzed that the flow profile declined with the rotational parameter. It is observed that angular velocity diminishes via a larger porosity parameter. Furthermore, the temperature gradient is declined via a larger magnitude of the Prandtl number. the heat transfer is enhanced in the occurrence of Brownian motion. The activations energy parameter causes an increment in the volumetric concentration field. Moreover, the local Nusselt number is reduced via a greater estimation of the porosity parameter.

Keywords: Micropolar nanofluid flow; Darcy-Forchheimer law; Heat source/sink; Activation energy; Bvp4c

https://doi.org/10.1016/j.jppr.2023.05.005