Cattaneo-Christov Heat Flux Model for Second Grade Nanofluid Flow with Hall Effect through Entropy Generation over Stretchable Rotating Disk

Coatings

Zahir Shah¹  Muhammad Wakeel Ahmad²  Rashid Nawaz²  Luthais B. McCash³ 

[1] Center of Excellence in Theoretical and Computational Science (TaCS-CoE), SCL 802 Fixed Point Laboratory, Science Laboratory Building, King Mongkut’s University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok 10140, Thailand;Department of Mathematics, Abdul Wali Khan University, Mardan 23200, KPK, Pakistan;Department of Mathematics, College of Science and Engineering University of Leicester, University Road, Leicester LE1 7RH, UK;

关键词: entropy;    second grade nanofluid;    Cattaneo-Christov heat flux model;    nanofluid;    nonlinear thermal radiation;    Joule heating;   

DOI  :  10.3390/coatings10070610

来源: DOAJ

【 摘 要 】

The second grade nanofluid flow with Cattaneo-Christov heat flux model by a stretching disk is examined in this paper. The nanofluid flow is characterized with Hall current, Brownian motion and thermophoresis influences. Entropy optimization with nonlinear thermal radiation, Joule heating and heat absorption/generation is also presented. The convergence of an analytical approach (HAM) is shown. Variation in the nanofluid flow profiles (velocities, thermal, concentration, total entropy, Bejan number) via influential parameters and number are also presented. Radial velocity, axial velocity and total entropy are enhanced with the Weissenberg number. Axial velocity, tangential velocity and Bejan number are heightened with the Hall parameter. The total entropy profile is enhanced with the Brinkman number, diffusion parameter, magnetic parameter and temperature difference. The Bejan number profile is heightened with the diffusion parameter and temperature difference. Arithmetical values of physical quantities are illustrated in Tables.

【 授权许可】

Unknown