The European Physical Journal Special Topics, Год журнала: 2025, Номер unknown
Опубликована: Янв. 7, 2025
Язык: Английский
Scientific Reports, Год журнала: 2024, Номер 14(1)
Опубликована: Июнь 19, 2024
Abstract Natural convection in a square porous cavity with partial magnetic field is investigated this work. The enters part of the left wall horizontally. horizontal walls are thermally insulated. wave vertical on right side at low temperature, while high temperature. Brinkman-Forchheimer-extended Darcy equation motion utilized construction fluid flow model for media. Finite Element Method (FEM) was used to solve problem’s governing equations, and current study validated by comparing it earlier research. On streamlines, isotherms, Nusselt numbers, changes length, Hartmann number, Rayleigh number waves have been examined. This paper will show that negatively impacts heat transmission. suggests can control transfer movement. Additionally, shown improved when increased.
Язык: Английский
Процитировано
24
International Journal of Heat and Fluid Flow, Год журнала: 2024, Номер 106, С. 109295 - 109295
Опубликована: Янв. 13, 2024
Язык: Английский
Процитировано
17
International Journal of Thermofluids, Год журнала: 2024, Номер 22, С. 100657 - 100657
Опубликована: Апрель 16, 2024
The aim of this study is to conduct a non-similar analysis flow and heat transfer rheology non-Newtonian fluid over radially magnetized curved stretching surface in the presence multiple type nanoparticles. Reiner–Philippoff viscosity homogenous models are incorporated governing equation effects nanoparticles respectively. model complicated presenting an implicit stress-strain relationship. This has ability present behavior response varying viscoelastic conditions shear-thinning, shear-thickening as well Newtonian fluid. nickel, molybdenum disulfide, tantalum used enhancement thermal conductivity with influences radiative flux viscous dissipation. To attain more precise generalized flow, boundary layer equations converted form. local non-similarity method up second level truncation employed numerically solve resulting PDEs via bvp4c MATLAB tools. examine impact physical factors on transfer, numerical data visually tabulated displayed. It worth mentioning that radiation, curvature parameter, magnetic number play important role controlling wall drag flux.
Язык: Английский
Процитировано
15
Journal of Engineering Research, Год журнала: 2024, Номер unknown
Опубликована: Май 1, 2024
In this study, magnetohydrodynamic (MHD) natural convection flow investigated a large heat transfer trend in uniform magnetic field finite element approach. For verification, calculation results adjusted high stream function, temperature distribution, and the average Nusselt of MHD. This research presents an innovative contribution by analyzing corrugated geometries, specifically focusing on square-corrugated (SW) circle-corrugated (CW) configurations. Additionally, The influence key parameters constituting Hartman number, Rayleigh Darcy which largely affects velocities, temperature, was accurately observed present study. To computationally resolve, wave is in-stream behavior but has not influenced distribution or parameter. maximum minimum value number related to S at Da=10−5 case 1 WC 2, respectively. Furthermore, decreasing parameter increases velocity u v strength both cases.
Язык: Английский
Процитировано
14
Journal of Cleaner Production, Год журнала: 2024, Номер 441, С. 141089 - 141089
Опубликована: Фев. 1, 2024
Increasing population growth and economic progress are partially to blame for the global issue of climate change rising energy usage. One important step towards dealing with this would be use renewable produced from natural resources. option goal is enhance efficiency a thermal system using tiny nanoparticles. Adding hybrid nanoparticles in working fluid results "hybrid nanofluid" which can improve meet demand current technology. This study aims increase heat transfer an inclined cavity Ag–TiO2 The novel aspects research include evaluating performance suggested presence magnetic field radiation. Moreover, ability regular fluid, nanofluid, nanofluid will also compared each other. finite difference method used obtain numerical solutions. computations done MATLAB software. findings show that applied boosts capacity increased by 1.6% 2.5% on adding 4% vol. TiO2 nanoparticles, respectively.
Язык: Английский
Процитировано
12
International Journal of Thermofluids, Год журнала: 2024, Номер 24, С. 100843 - 100843
Опубликована: Сен. 1, 2024
This study presents a novel investigation into the thermal behavior of hybrid nanofluid (MgO − Ag H2O) in natural convection around porous fin triangular enclosure under influence radiation and magnetohydrodynamic effects. The research uniquely combines these complex phenomena, addressing significant gap literature. configuration has potential applications advanced solar collectors, electronic cooling systems for high-power devices, compact heat exchangers various industries. main objectives are to understand how parameters transfer fluid flow optimize design enhanced performance. considers range variables including Rayleigh number (103 106), Hartmann (0 – 50), Aspect ratio (0.3 0.6), (Rd = 1 5, λ 5), volume concentration (0- 0.05), which have been numerically analyzed using finite element method (FEM). findings reveal that increasing Darcy (Da) enhances at low numbers (Ra 103,104). However, higher Ra impact Da becomes more complex, with critical beyond efficiency decreases due an increase resistance. nanoparticle plays vital role, as concentrations lead improved efficiency, especially Ra, through conductivity dispersion. length greatly impacts patterns rates, longer fins creating patterns, promoting stronger plumes. Thermal radiation, represented by λ), significantly influences both rate convective within enclosure. also incorporates comprehensive entropy generation analysis, providing insights system irreversibilities optimization potential. analysis reveals interplay between their on offering valuable guidance designing high-performance management systems.
Язык: Английский
Процитировано
12
Alexandria Engineering Journal, Год журнала: 2024, Номер 106, С. 691 - 703
Опубликована: Авг. 31, 2024
Nanofluids have captured the attention of scientists due to their superior thermophysical properties compared ordinary liquids. Consequently, nanofluids serve as suitable cooling agents applicable systems requiring swift response thermal changes, such vehicle engines. Therefore, current article scrutinizes characteristics heat transfer on pressure-driven flow magnetized nanofluid between two curved corrugated surfaces in presence generation/absorption. Copper oxide nanoparticles (Cu) been combined with pure water form a called Cu/H2O. The geometry channel is represented mathematically an orthogonal curvilinear coordinate system. corrugation grooves are described by sinusoidal functions phase differences walls. boundary perturbation method used find analytical solution for velocity field, temperature and volumetric rate taking amplitude parameter. impact dissimilar parameters curvature parameter (0.5≤k≤10), wave number (1≤α≤3), magnetic (1≤M≤5), (0.1≤ε≤0.8) fields analyzed through graphs discussed detail. results show that peak increases radius width constant pressure gradient. If we increase from 1 4, profile at specified point decreases 30 %. source/sink 2 5, approximately 17 increased corrugations any difference walls depending wavenumber curvature.
Язык: Английский
Процитировано
11
Alexandria Engineering Journal, Год журнала: 2025, Номер 119, С. 345 - 358
Опубликована: Фев. 6, 2025
Язык: Английский
Процитировано
1
Results in Engineering, Год журнала: 2024, Номер 22, С. 102294 - 102294
Опубликована: Май 27, 2024
The modern era is concerned about the problems related to heat transfer and energy storage. hybridization of nanofluids stands an important study due enhanced thermophysical properties these effective fluids. distinguished response hybrid towards thermal conductivity appreciated for heating cooling industrial purposes. Thus, current intends investigate effect magnetohydrodynamics radiation on aiding opposing flow nanofluid flowing over a porous exponentially stretching surface. influenced by presence stagnation point non-uniform source/sink while convective boundary conditions are also assumed. control equations exhibited according assumptions similarity transformation leads system ordinary differential from partial equations. deduced solved numerically using bvp4c technique, built-in MATLAB based algorithm. upshots spectacle results velocity temperature profiles behalf various parameters affecting flow. increasing values magnetic parameter ratio significantly impacts profile assisting flows. escalates higher parameter, Eckert number Biot number. Moreover, analysis delivers valued insights into friction drag considered model. gained can support in applications involving systems.
Язык: Английский
Процитировано
9
International Journal of Thermofluids, Год журнала: 2024, Номер 23, С. 100723 - 100723
Опубликована: Июнь 13, 2024
Detailed investigation has been carried out to examine the behavior of squeezed fluid flow under magnetic influence amid two infinitely extended disks arranged parallel each other. Porosity is introduced in lower disk study characteristics. Applications engineering and industrial processes, such as cooling systems chemical reactors, where fields regulate flow, need a thorough understanding this phenomenon. The funamdental equations Navier Stokes (N-S) Equations form Partial Differential (PDEs) are transformed into Ordinary (ODEs) with help similarity tranformation. For ensuring better accuracy MATLABs powerful tool employed BVP4C technique, compute numerical solution. Fluid characteristics discussed for stated geometry. velocity profile variations Non-dimensional parameters (Hartman Ha, Squeezed S, suction / injection A). Major findings current research revealed that effect Hartmann Number on greatest value more remarkable case compared suction. Moreover, Velocity exhibits consistent increase η rises both scenarios without (A = 0) < 0). Current opens new avenues terms exploration context simplicity, verstality techniques.
Язык: Английский
Процитировано
9