Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effects
Motile gyrotactic organism activity in micropolar fluid subjected to simultaneous heat and mass transfer in the presence of thermal diffusion and diffusion thermo effects is modeled. The base fluid is taken as kerosene oil. The immersion of nano-sized particles of Cu−TiO2 kerosene oil makes its rheo...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X22003367 |
| _version_ | 1811233691622440960 |
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| author | Abdelatif Salmi Hadi Ali Madkhali Maryam Haneef Sayer Obaid Alharbi M.Y. Malik |
| author_facet | Abdelatif Salmi Hadi Ali Madkhali Maryam Haneef Sayer Obaid Alharbi M.Y. Malik |
| author_sort | Abdelatif Salmi |
| collection | DOAJ |
| description | Motile gyrotactic organism activity in micropolar fluid subjected to simultaneous heat and mass transfer in the presence of thermal diffusion and diffusion thermo effects is modeled. The base fluid is taken as kerosene oil. The immersion of nano-sized particles of Cu−TiO2 kerosene oil makes its rheological characteristics of micropolar fluid because nano-sized particles serve as micro-structures. In this case couple stress, vortex and spin gradient viscosities become significant and simultaneously linear and angular momenta become equally remarkable. So, micropolar theory is the best to model the immersion of nano-structures in the fluid. Similarity variables are used to transform the problems into their dimensionless forms. The mathematical models are solved numerically by applying the finite element method (FEM). The results are validated and numerical experiments are performed to analyze the key parameters of the unknown field variables. In order to analyze the impact of physical parameters on field variables, numerous simulations are performed. The micro-rotation of microparticles and nanoparticles due to fluid deformation motivates fluids particles to rotate faster. Therefore, linear motion is observed to be increased for higher values of vortex viscosity. The curvature parameter has significantly impacted the linear motion of the fluid particles. The impact of the curvature parameter on the movement of nanofluid is lesser than the impact of the curvature parameter on the motion of hybrid nanoparticles. Concentration gradient supports the diffusion of heat in the fluid regime and numerical experiments with variation of Dufour (that measures the effects of concentration gradient on heat diffusion) have shown that concentration gradient is more effective in the case of hybrid nanofluid relative to the mono nanofluid. The angular motion of fluid particles increases when vortex viscosity is increased. Numerical simulations have predicted that the angular motion of particles of hybrid nanofluid has a lesser angular speed than that of the angular motion of particles of mono nanofluid. The Soret number determines the impact of temperature gradient on the diffusion of solute in the fluid. Simulations for various values of Soret number have predicted that the impact of temperature gradient on the diffusion of solute in hybrid nanofluid is stronger than the impact of temperature gradient on the diffusion of solute in mono nanofluid. |
| first_indexed | 2024-04-12T11:24:56Z |
| format | Article |
| id | doaj.art-fada959abe24423e91e0b2749443dd12 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-12T11:24:56Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-fada959abe24423e91e0b2749443dd122022-12-22T03:35:16ZengElsevierCase Studies in Thermal Engineering2214-157X2022-07-0135102090Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effectsAbdelatif Salmi0Hadi Ali Madkhali1Maryam Haneef2Sayer Obaid Alharbi3M.Y. Malik4Prince Sattam bin Abdulaziz University, College of Engineering, Department of Civil Engineering, Alkharj, 16273, Saudi Arabia; Corresponding author.College of Engineering, Mechanical Engineering Department, Jazan University, Jazan, 45142, P.O.Box 114, Saudi ArabiaDepartment of Applied Mathematics & Statistics, Institute of Space Technology, Islamabad, 44000, PakistanMathematics Department, College of Science Al-Zulfi, Majmaah University, Majmaah, 11952, Saudi ArabiaDepartment of Mathematics, College of Sciences, King Khalid University, Abha, 61413, Saudi ArabiaMotile gyrotactic organism activity in micropolar fluid subjected to simultaneous heat and mass transfer in the presence of thermal diffusion and diffusion thermo effects is modeled. The base fluid is taken as kerosene oil. The immersion of nano-sized particles of Cu−TiO2 kerosene oil makes its rheological characteristics of micropolar fluid because nano-sized particles serve as micro-structures. In this case couple stress, vortex and spin gradient viscosities become significant and simultaneously linear and angular momenta become equally remarkable. So, micropolar theory is the best to model the immersion of nano-structures in the fluid. Similarity variables are used to transform the problems into their dimensionless forms. The mathematical models are solved numerically by applying the finite element method (FEM). The results are validated and numerical experiments are performed to analyze the key parameters of the unknown field variables. In order to analyze the impact of physical parameters on field variables, numerous simulations are performed. The micro-rotation of microparticles and nanoparticles due to fluid deformation motivates fluids particles to rotate faster. Therefore, linear motion is observed to be increased for higher values of vortex viscosity. The curvature parameter has significantly impacted the linear motion of the fluid particles. The impact of the curvature parameter on the movement of nanofluid is lesser than the impact of the curvature parameter on the motion of hybrid nanoparticles. Concentration gradient supports the diffusion of heat in the fluid regime and numerical experiments with variation of Dufour (that measures the effects of concentration gradient on heat diffusion) have shown that concentration gradient is more effective in the case of hybrid nanofluid relative to the mono nanofluid. The angular motion of fluid particles increases when vortex viscosity is increased. Numerical simulations have predicted that the angular motion of particles of hybrid nanofluid has a lesser angular speed than that of the angular motion of particles of mono nanofluid. The Soret number determines the impact of temperature gradient on the diffusion of solute in the fluid. Simulations for various values of Soret number have predicted that the impact of temperature gradient on the diffusion of solute in hybrid nanofluid is stronger than the impact of temperature gradient on the diffusion of solute in mono nanofluid.http://www.sciencedirect.com/science/article/pii/S2214157X22003367Gyrotactic micro-organismsGradient effectsJoule heatingNano-particlesMicro-motion spin gradient viscosityVortex viscosity |
| spellingShingle | Abdelatif Salmi Hadi Ali Madkhali Maryam Haneef Sayer Obaid Alharbi M.Y. Malik Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effects Case Studies in Thermal Engineering Gyrotactic micro-organisms Gradient effects Joule heating Nano-particles Micro-motion spin gradient viscosity Vortex viscosity |
| title | Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effects |
| title_full | Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effects |
| title_fullStr | Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effects |
| title_full_unstemmed | Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effects |
| title_short | Numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and Soret and dufour effects |
| title_sort | numerical study on thermal enhancement in magnetohydrodynamic micropolar liquid subjected to motile gyrotactic microorganisms movement and soret and dufour effects |
| topic | Gyrotactic micro-organisms Gradient effects Joule heating Nano-particles Micro-motion spin gradient viscosity Vortex viscosity |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X22003367 |
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