Arrhenius activation energy and thermal radiation effects on oscillatory heat-mass transfer of Darcy Forchheimer nanofluid along heat generating cone

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 57, P. 104294 - 104294

Published: March 25, 2024

The main goal of present research is to illustrate the frequency and amplitude behavior heat mass transfer Darcy Forchheimer nanofluid flow with Arrhenius activation energy thermal radiation effects. impact generation chemical reaction on along vertical porous cone investigated improve heating durability thermodynamic systems in this research. governing mathematical model moderated suitable format construct physical coefficients. oscillating stokes primitive coefficients are used differentiate into steady forms. Gaussian elimination implicit finite difference techniques address numerical findings. To pertinent algorithm FORTRAN system, primitive-type variables models first law thermodynamics, nanoparticles generation. results under defined conditions reported graphical sequence through Tec-plot 360. It found that surface temperature increases as because improves excessive transport. depicted Darcy-Forchheimer material decreases fluid temperature. coefficient increases. Prandtl number current mechanism has several uses mineralogy, cutting tools, lubricating oils, machining operations, exchangers, coating sheets, petroleum drilling cooling metallic cones.

Language: Английский

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The significant role of Darcy–Forchhiemer with integrated hybrid nanoparticles ( Graphene and TiO ₂ ) on dusty nanofluid flow subjected to heat conduction

Numerical Heat Transfer Part B Fundamentals, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 16

Published: May 6, 2024

The thermal analysis of two-phase models that deal with the fluid and dusty phases has been considered. This study instigates flow a non-miscible, hybrid nanofluid over stretching cylinder Darcy–Forchheimer permeability in presence radiation. mathematical model is based on single-phase model, which features modified thermophysical characteristics. innovative explores how important it to enhance concentration dust particles dynamics. Hybrid nanoparticles are substituted for conventional case accelerate heat transfer rate fluid. Therefore, this study, magnetohydrodynamic nanofluids non-Newtonian fluids suspensions have examined. appropriate dimensionless variables used convert governing periodic into non-dimensional form. finite-difference-based bvp5c algorithm through Matlab numerical set obtained ordinary differential equations. graphs explored influences relatable factors profiles mass, heat, velocity transfers. It observed intensifying values Eckert number (Ec) Biot (Bi), temperature both increased at significant level, decreased increasing intensity magnetic field. computational results velocity, core temperature, dispersion aspects. Furthermore, exhibit declining behavior as result impact porosity, mass concentration, magnetism stream. Moreover, noticed phase θp(η) θ(η) intensified high field missile nozzles, nuclear power plants aerospace gaseous-core rocket systems, radiation considered evaluating heating significance.

Language: Английский

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Optimizing heat transfer rate and sensitivity analysis of hybrid nanofluid flow over a radiating sheet: Applications in solar-powered charging stations

Numerical Heat Transfer Part B Fundamentals, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 21

Published: April 18, 2024

In a solar collector system, absorbing radiation through panel and transforming it into heat, the role of nanofluid is vital. However, combined effect CuO Cu water hybrid efficiently carries fascinated heat away from collector. Further, helps improve in efficiency thermal system by enhancing transfer losses. Based upon advanced properties, study aims at behavior conducting comprised nanoparticles nonlinear stretching surface filled with porous matrix. Essentially, use dissipative convective boundary conditions are important properties. The assemble diversified similarity rules useful for transformation governing equations dimensionless form. numerical technique help built-in function bvp4c MATLAB employed solution designed model equipped different constraints. A robust statistical analysis i.e. response methodology (RSM) variance (ANOVA) used to optimize rate. Sensitivity associated factors united obtained presented briefly. Finally, parametric describe following pattern graph. outcomes are; enhanced volume fraction augments fluid velocity as well temperature significantly. Thermal has influential transport phenomenon nanofluid.

Language: Английский

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Optimization of structural parameters of pilot-operated control valve based on CFD and orthogonal method

Results in Engineering, Journal Year: 2024, Volume and Issue: 21, P. 101914 - 101914

Published: Feb. 11, 2024

Due to the large pressure difference between front and back of valve, pilot-operated regulating valve is prone blocking flow, there are multiple closed cavities connected by small holes in flow channel complex. If structure design spool component improper, it will seriously affect safe stable operation valve. In this paper, based on principle multi-stage step-down compressible medium throttling equation, pilot assembly preliminarily designed prevent flow. The main influencing parameters affecting stability core analyzed, sample space orthogonal method. numerical simulation analysis force different test samples under openings carried out study influence structural core. Based trend range factors, optimal working condition studied. ANSYS CFX software was used calculate field opening experimental control were obtained. results show that mainly include equivalent diameter opening, effective seat throttling, damping hole. 16 has a whole adjustment range, floating around 12 % 1700 N. Under d greatest spool. When 40 %–80 %, parameter lifting height h. (30%–70%), spool, its size 4.0 mm. second core, 2.0

Language: Английский

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A comprehensive review on the Dynamical behavior of heat and fluid flow mechanism: Thermal performance across different geometries

Partial Differential Equations in Applied Mathematics, Journal Year: 2024, Volume and Issue: 11, P. 100808 - 100808

Published: July 8, 2024

The prominent novelty of current review is to exhibit the fluctuating and oscillatory convective heat transfer properties along various geometries with magnetic force, variable density, Prandtl number, buoyancy force number effects. significance present work illustrate a comprehensive on transient transfer. Transient plays an essential role in technological environmental applications, including climate control, structure safety, engines, thermal computer heating cooling, energy safety. literature primarily focuses steady temperature velocity domains, few studies exploring time-varying fluid flow forced, natural, or mixed mechanisms different methods. In review, justification results was performed by using oscillating stokes conditions directly partial differential models. similarity variables stream functions are used but primitive transformation implicit form finite difference method Gaussian elimination technique through FORTRAN Tecplot-360 programming tools. governing model reduced into steady, real imaginary explore transmission. flows have gained due their ability achieve large rates. Compared movement, higher variations heated surface. Periodic produces improved surface transmission rate than flow. Predicting controlling transients exchangers requires concept forced convection transport. solutions important for ensuring effectiveness reliability electrical components, nuclear power stations, heat-generating steam turbines, condensation systems, catalytic converters, shielding spacecraft, devices, internal combustion air conditioning refrigerator cooling networks batteries, generators, transformers. It found that frequency transport enhances periodic variables. depicted amplitude displayed each choice parameter around two angles π/4 π circular magnetized maximum reported vertical angle π/2 values.

Language: Английский

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Significance of solar radiation and viscous dissipation on oscillatory and steady convective heat transfer around buoyancy-driven sphere using FDM scheme

Case Studies in Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 105817 - 105817

Published: Feb. 1, 2025

Language: Английский

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Study of ionic water/graphene nanofluids in solar panels under the effects of thermal radiation and slip conditions using experimental data

International Communications in Heat and Mass Transfer, Journal Year: 2025, Volume and Issue: 164, P. 108845 - 108845

Published: March 24, 2025

Language: Английский

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Influence of Magnetic Dipole on Biomagnetic Fluid Flow Past a Thin Needle Under the Interaction of Magnetohydrodynamics and Ferrohydrodynamics Using Lie Group Analysis

BioNanoScience, Journal Year: 2024, Volume and Issue: 14(2), P. 1254 - 1265

Published: March 20, 2024

Language: Английский

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Influence of thermal radiation and shape factor on a hybrid nanofluid flow over a permeable flat plate with cross-diffusion effects: An irreversibility analysis

Numerical Heat Transfer Part A Applications, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 26

Published: April 11, 2024

Understanding and controlling the shape factors of nanoparticles in fluid flow problems is crucial for optimizing heat transfer, dynamics, various applications such as nanofluids, drug delivery systems, catalysis, nanocomposites. By tailoring nanoparticles, researchers can manipulate their behavior, dispersion, interaction with fluid, thereby desired outcomes problems. The meticulous investigation uncovers integration entropy analysis convective magnetohydrodynamic hybrid nanofluid via a permeable flat surface, by considering effects Dufour, viscous dissipation, Soret, thermal radiation. governing equations are converted into set nonlinear ordinary differential using appropriate similarity transformations then solved bvp4c solver, MATLAB in-built function. We display three different factors: platelet, cylinder, brick. skin friction coefficient increases at rate 1.5089 brick shape, 1.5163 cylindrical 1.5212 platelet when mixed convection parameter lies between 1 5. In this regard, it important to point out that there direct connection increase temperature transmission decline Dufour number (Du). It has been found 1≤Du≤2.4, Nusselt decreases 0.4786, 0.4618, 0.4512 brick, shapes, respectively. A Sherwood noticed an upsurge Soret (Sr). There noticeable 0.0442 0.0438 cylinder form, 0.0435 form 1≤Du≤2.4. Furthermore, we have detected radiation amplifies both Bejan profiles formation.

Language: Английский

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“Enhancing heat transfer in high-pressure transformers: A study on nanoparticle-doped insulating fluids”

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 60, P. 104707 - 104707

Published: June 15, 2024

The impact of doping electrical insulating fluids with nanoparticles on the thermal characteristics resulting nanofluids and heat transfer for cooling high-power transformers is covered in this study. base fluid case was synthetic ester. It investigated how adding Barium titanate (BaTiO3)nanoparticles to dielectric affected characteristics, including convection conductivity. Comparisons were made between performance basic nanofluids. An examination Rayleigh Nusselt values confirms comparison. effects represented as functions solid volume particle from (0 ≤ φ < 10 %) number (Rat = 103 106). findings demonstrate that increasing size by % increases employed liquid's effectiveness a conductor raises rate about compared liquid.

Language: Английский

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