Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2024, Volume and Issue: 168, P. 105912 - 105912
Published: Dec. 23, 2024
Language: Английский
Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2024, Volume and Issue: 168, P. 105912 - 105912
Published: Dec. 23, 2024
Language: Английский
Chinese Journal of Physics, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 1, 2024
Language: Английский
Citations
12Processes, Journal Year: 2025, Volume and Issue: 13(2), P. 491 - 491
Published: Feb. 10, 2025
In industrial operations, fluid transport within activated carbon—as one kind of porous media—often involves nonlinear instabilities, notably Rayleigh–Taylor instability (RTI). Herein it has been investigated for the flows in its intrinsic model to analyze generation adverse factors practical applications. By studying mechanism force influence, can explore how medium parameters impact RTI dynamics. The results show that horizontal forces dominate RTI’s initial evolution, with porosity influencing peak flow velocity timing delays (0% 22.39% delay). varying pore scales, (7.63% 1.46% delay) during stages, converging at later stages. Notably, vortex line rupture ε = 0.999 triggers Taylor formation, enhancing by 9.8816 times and promoting bidirectional mass transfer. This study enhances understanding transfer efficiency catalyst applications, enabling tailored media designs optimized heat
Language: Английский
Citations
0International Journal of Numerical Methods for Heat & Fluid Flow, Journal Year: 2025, Volume and Issue: unknown
Published: March 17, 2025
Purpose This study aims to investigate coupled heat and mass transfer processes in a wavy star-shaped cavity filled with nano-enhanced phase change materials (NEPCMs) porous media. It examines the influence of magnetic fields chemical reactions on transport phenomena explores role key parameters such as amplitude (A), frequency (f), Darcy number (Da), Hartmann (Ha), thermal radiation (Rd), Rayleigh (Ra), Soret (Sr) Dufour (Du) numbers. Design/methodology/approach The investigation uses incompressible smoothed particle hydrodynamics (ISPH) method, integrated an extreme gradient boosting (XGBoost) machine learning model, solutal transport. Periodic boundary conditions are imposed inner circular cylinder’s temperature concentration, modeled sinusoidal oscillations simulate dynamic sources. Findings results demonstrate that increasing parameter enhances gradients by 50% concentration 30%, whereas higher intensify velocity 40%. Low numbers significantly reduce permeability, leading 40% decrease transfer. Magnetic suppress convective transport, reducing peak average Nusselt (Nu_avg) Sherwood (Sh_avg) 30%. XGBoost model predictions align closely ISPH simulations, showing high accuracy for Nu_avg Sh_avg metrics. Originality/value provides comprehensive analysis interplay between physical NEPCM-filled cavities under conditions. integration numerical methods predictive understanding complex processes, contributing valuable insights design efficient systems. Future research directions include exploring multi-phase effects optimize performance further.
Language: Английский
Citations
0International Journal of Numerical Methods for Heat & Fluid Flow, Journal Year: 2024, Volume and Issue: 34(12), P. 4384 - 4408
Published: Oct. 14, 2024
Purpose This paper aims to focuses on by investigate the heat transmission and free convective flow of a suspension nano encapsulated phase change materials (NEPCMs) within an enclosure. Particles NEPCM have core-shell structure, with material (PCM) serving as core. Design/methodology/approach The enclosure consists square chamber insulated wall top bottom vertical walls that are differently heated. governing equations investigated using finite element technique. A grid inspection validation test done confirm precision results. Findings effects fusion temperature (varying from 0.1 0.9), Stefan number (changing 0.2 0.7), Rayleigh 10 3 6 ) volume fraction nanoparticles 0 0.05) streamlines, isotherms, capacity ratio average Nusselt graphs tables. From this investigation, it is found results in significant enhancement transfer compared pure fluid. augmentation becomes more important for low number, which around 16.57% approximately at 0.2. Secondary recirculation formed near upper left corner result non-uniform heating border. eddy expands notably rises. study findings indicate nanosuspension has potential act smart working fluid, significantly enhancing numbers enclosed chambers. Research limitations/implications particle core (n-octadecane, phase-change material) shell (PMMA, encapsulation material). host fluid water particles considered form dilute suspension. Practical implications Using NEPCMs energy storage thermal systems show improving efficiency several engineering applications. merge beneficial characteristics PCMs enhanced conductivity nanoparticles, providing flexible alternative effective control. Originality/value explore water-type nanofluid boundary, uniformly heated cooled right boundary non-uniformly boundary.
Language: Английский
Citations
2Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2024, Volume and Issue: 167, P. 105897 - 105897
Published: Dec. 12, 2024
Language: Английский
Citations
1Chinese Journal of Physics, Journal Year: 2024, Volume and Issue: 91, P. 867 - 882
Published: Aug. 26, 2024
Language: Английский
Citations
1Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2024, Volume and Issue: 168, P. 105912 - 105912
Published: Dec. 23, 2024
Language: Английский
Citations
0