Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effects

• DOI: 10.1016/j.csite.2022.102090
• Publication Date: 2022-05-10T13:19:57Z
• Authors: Abdelatif Salmi; Hadi Ali Madkhali; Maryam Haneef; Sayer Obaid Alharbi; M.Y. Malik
• Keywords: Thermophoresis

Motile gyrotactic organism activity in micropolar fluid subjected to simultaneous heat and mass transfer the presence of thermal diffusion thermo effects is modeled. The base taken as kerosene oil. immersion nano-sized particles Cu−TiO2 oil makes its rheological characteristics because serve micro-structures. In this case couple stress, vortex spin gradient viscosities become significant simultaneously linear angular momenta equally remarkable. So, theory best model nano-structures fluid. Similarity variables are used transform problems into their dimensionless forms. mathematical models solved numerically by applying finite element method (FEM). results validated numerical experiments performed analyze key parameters unknown field variables. order impact physical on variables, numerous simulations performed. micro-rotation microparticles nanoparticles due deformation motivates fluids rotate faster. Therefore, motion observed be increased for higher values viscosity. curvature parameter has significantly impacted particles. movement nanofluid lesser than hybrid nanoparticles. Concentration supports regime with variation Dufour (that measures concentration diffusion) have shown that more effective relative mono nanofluid. increases when viscosity increased. Numerical predicted a speed Soret number determines temperature solute Simulations various stronger