Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 105525 - 105525
Published: Nov. 1, 2024
Language: Английский
Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 60, P. 104744 - 104744
Published: June 28, 2024
Language: Английский
Citations
23
Ain Shams Engineering Journal, Journal Year: 2023, Volume and Issue: 15(2), P. 102448 - 102448
Published: Aug. 28, 2023
The aim of the current study is to mainly investigate complex interaction Lorentz force with micropolar fluids inside a lid-driven square cavity. We used numerical method solve challenging nonlinear partial differential equations that arise from mathematical modeling fluid flow in presence magnetic field. This because such problems do not have analytical solutions or are very hard find. dimensionless form governing equation solved using Stream-Vorticity formulation. Unlike most previous studies, uniform field throughout domain was assumed, which more realistic. introduce confined shape multiple horizontal and vertical strips. With help our self-developed computer codes MATLAB language, we intend understand way where these parameters affect thermal properties nanofluids. It found causes spinning particles, creates intricate structure vortices regime. Further, Nusselt number (Nu) skin friction (CfRe) opposite trends Reynolds strength. Nu significantly influenced by microrotation parameter while CfRe not. Both slightly increased much sensitive than friction. For example, when increases 1 20, rises 0.94 7.48, only changes 45.24 44.97. Similarly, affected strip width A small increase 0.1 leads nearly 5% number, but 0.5% shows heat transfer
Language: Английский
Citations
40
Case Studies in Thermal Engineering, Journal Year: 2023, Volume and Issue: 50, P. 103408 - 103408
Published: Aug. 25, 2023
A localized magnetic field is a vector that alters in space because of materials or electric currents. Some examples fields are indoor localization, anomaly detection, magnetoencephalography, and quantum physics. Magnetic can be used to estimate the orientation position device inside building by measuring changes caused ferromagnetic substances. On other hand, Tri-hybrid nanofluid transfer heat better than normal hybrid mixing three different nanoparticles with synergistic effects. It have more varied physical thermal properties choosing combinations nanoparticles. That's why it has possible uses various such as solar thermal, biomedical, industrial processes. Therefore, goal this research explore complex dynamics magnetized force affects rotation nanostructures vortex formation tri-hybrid flow regime using single-phase model, while governing partial differential equations discretized numerically. With help our self-developed computer codes MATLAB language, we intend understand way these parameters affect nanofluids. Additionally, current work provides novel analysis makes investigate lines isotherms associated strips field. discovered spinning nano-particles, which creates intricate structure vortices regime, results from Further, investigations reveal both local skin friction (CfRe) Nusselt number (Nu) increased up 46% 99% when strengthened. Finally, adding nanosized particles result Nu CfRe, but differently for Silver (Ag) had highest increase (55%) CfRe (110%), showing strong thermal-fluid coupling. Alumina Al2O3 Titanium Dioxide (TiO2) lower increases (33% 25%) (13% 9%), weaker coupling regime.
Language: Английский
Citations
33
Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 60, P. 104637 - 104637
Published: June 4, 2024
Heat pipes are heat transfer devices that carry from one point to another efficiently. The thermal conductivity and performance of the pipe can be increased by integrating nanofluids, making them appropriate for applications such as electronics cooling, spacecraft management, recovery systems. suggested work is being carried out approximate solution tri-hybrid nanofluid (copper (Cu), silver (Ag) graphene oxide (GO)) flow between two horizontal coaxial cylinders. inner cylinder rotating with constant velocity outer fixed. Moreover, under influence magnetic field. system governing partial differential equations converted into a set non-linear ordinary incorporating suitable similarity transformation then solved numerically employing Runga-Kutta 4th order technique. Response surface methodology (RSM) also incorporated in optimize rate various combinations physical parameters involved study. study revealed temperature raising strength Reynolds number melting parameter. From optimization technique RSM it came know reached its peak value when concentration nanoparticle fluid higher than normal.
Language: Английский
Citations
16
Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 408, P. 125257 - 125257
Published: June 14, 2024
Language: Английский
Citations
14
Numerical Heat Transfer Part B Fundamentals, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 16
Published: June 18, 2024
Enclosure design significantly impacts thermal engineering processes and devices, including electronic exchangers, power engines, heating systems, solar panels, nuclear plants. The square cavity with variable aspect ratios is utilized for multi-objective optimization improved performance of microchannels. Cold cylinders in enclosures are often to reduce energy loss micro heat sinks exchangers. So, article's main objective investigate concurrent characteristics external internal forces on a Casson fluid contained magnetohydrodynamics (MHD). A cylinder embedded the middle enclosure, an inclined magnetic field angle φ applied. upper lid assumed be inertially driven by constant amount slipping velocity, state disturbed assuming uniform temperature at left wall while right cool. finite element method (FEM) based open-source software renowned as COMSOL Multiphysics solve non-dimensionalized momentum equations. This study uses enclosure essential factors, such parameter β, Hartmann number Ha, Reynolds Re, Grashof Gr. findings reveal that kinetic β=10 12.22 times greater than β=0.1 Ha=0. It observed Gr have direct impact local Nusselt number. Fluid increases it decreases Re increases. shows how obstacles various shapes conditions handling transfer characteristics.
Language: Английский
Citations
10
Journal of Thermal Analysis and Calorimetry, Journal Year: 2024, Volume and Issue: 149(2), P. 653 - 670
Published: Jan. 1, 2024
Language: Английский
Citations
7
International Journal of Thermofluids, Journal Year: 2024, Volume and Issue: unknown, P. 101026 - 101026
Published: Dec. 1, 2024
Language: Английский
Citations
6
Case Studies in Thermal Engineering, Journal Year: 2023, Volume and Issue: 51, P. 103549 - 103549
Published: Sept. 28, 2023
Zinc oxide and zirconium have huge applications in science engineering. nanoparticles can be utilized as lubricant additives kerosene oil to enhance the oil's lubricating qualities. These also, reduce friction wear between moving parts, due this efficiency life span of machinery. improve combustion properties, anti-corrosion coating metal surface, catalysis refining process, etc. Due above applications, article predicts hybrid nanofluid two rotating, squeezing, permeable discs. The current model's main purpose is examine effects zinc on a oil-based that flows Angular velocities are being used rotate A system ordinary differential equations formed by time-dependent constitutive formulations mass, momentum, energy, mass distribution equations. In case, equation solved analytically through Homotopy analysis method (HAM), resulting fast convergence problem. dimensionless temperature, concentration, velocity characteristics various essential factors illustrated explained. thermal profile improved raising thermophoresis, thermophoresis volume percentage, Brownian motion parameters.
Language: Английский
Citations
15
Thermal Science and Engineering Progress, Journal Year: 2025, Volume and Issue: unknown, P. 103641 - 103641
Published: May 1, 2025
Language: Английский
Citations
0