Energy, Environmental, and Economic Benefits of Hydrogen-Enriched Biofuel Using Ammonium Hydroxide in Reactivity-Controlled Compression Ignition Engines

Results in Engineering, Год журнала: 2024, Номер 24, С. 103672 - 103672

Опубликована: Дек. 1, 2024

Язык: Английский

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Entropy Analysis of Carreau Nanofluid Flow in the Presence of Joule Heating and Viscous Dissipation Past Unsteady Stretching Cylinder

Engineering Reports, Год журнала: 2025, Номер 7(1)

Опубликована: Янв. 1, 2025

ABSTRACT The study aims to investigate the irreversibilities of a Carreau nanofluid flow over, unsteady stretching cylindrical sheet exposed radiation, non‐Darcy porous medium, viscous dissipation, joule heating, etc. It provides how energy produced in is used efficiently by minimizing irreversibilities. governing partial differential equations are transformed into first‐order initial value problems similarity transformation and linearization. shooting technique an open‐source Python programming package solve using Runge–Kutta sixth‐order, numerical approach validated published articles. Basic profiles and, most importantly, entropy generation examined graphs relation relevant parameters. Skin friction behavior heat mass fluxes response various parameters also examined. results demonstrated that creation initiated increase magnetic curvature parameters, as well Eckert, Brinkman, porosity However, when Forchheimer number increases, decreases. An Eckert number, Prandtl radiation parameter motivates irreversibility due transfer, whereas Weissenberg rises, transfer falls around wall. According values table, growth thermal Biot parameter, initiate magnitude rate transfers. In contrast, rates fell rose. Analysis conversions system efficiency can be done this study, particularly engines, refrigeration systems, other thermodynamic processes.

Язык: Английский

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Analytical investigation of fireball dynamics and radiative heat damage in energetic explosions

Instrumentation Science & Technology, Год журнала: 2025, Номер unknown, С. 1 - 20

Опубликована: Янв. 22, 2025

Язык: Английский

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Synthesis of copper oxide nanoparticles and their efficiency in automotive radiator heat transfer systems

Powder Technology, Год журнала: 2025, Номер unknown, С. 120887 - 120887

Опубликована: Март 1, 2025

Язык: Английский

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Thermal Investigation of a Solar Collector Using an Efficient Computational Technique

Engineering Reports, Год журнала: 2025, Номер 7(3)

Опубликована: Март 1, 2025

ABSTRACT The thermal efficiency of a flat‐plate solar collector is theoretically analyzed in this study. For purpose, novel computational technique called the Akbari‐Ganji method (AGM) applied. solution function derived using examined for three different cases, including four‐term, six‐term, and eight‐term approximations. To validate proposed method, obtained results are compared with those from published work, showing very good agreement. comprehensively assessed under influence length, effectiveness coefficient, heat loss coefficient. reveal that an increase coefficient enhances collector's efficiency.

Язык: Английский

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Thermal and solutal performance of Buongiorno’s nanofluid model by embedding into the Bingham fluid flow configured by heat generation and activation energy

Proceedings of the Institution of Mechanical Engineers Part N Journal of Nanomaterials Nanoengineering and Nanosystems, Год журнала: 2025, Номер unknown

Опубликована: Апрель 12, 2025

This paper explores the three-dimensional steady non-Newtonian nanofluid flow due to a rotating disk by using Bingham fluid model. Moreover, we have extended our analysis taking consequence of thermal and solutal aspects heat generation activation energy. The Buongiorno’s model is considered investigate improvement occurs in conductivity thermophoresis Brownian motion nanoparticles base fluid. Applying significance while energy having several industries application, including enhancing performance cooling technologies, industrial processes, biomedical devices, systems are few examples. Research on these coupled effects has potential make significant progress domains that depend interaction transport, dynamics, chemical reactions. problem modeled utilizing equation continuity, Cauchy momentum equation, law conservation Within range high Reynolds number, boundary-layer measured similarity solution. forming partial differential equations altered into ordinary ones via suitable transformations. solutions (numerical graphical) attained solving emerging bvp4c method MATLAB software. results been argued displayed through graphs order examine how velocity, temperature concentration distribution affected dimensionless parameters. radial velocity decreases with raising magnitude number whereas increment happens tangential number. axial profile turn-up growing implying quantity drawn from surroundings decreased. generation/absorption constraint, Damkohler gradient turn-down difference parameter novelty relays investigation enhancement happen additions which flowing disk.

Язык: Английский

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Horizontal Magnetic Field Influence on Fluid Flow Across a Variable Thickness Rotating Disk With Stretching and Melting Phenomenon

Heat Transfer, Год журнала: 2025, Номер unknown

Опубликована: Янв. 12, 2025

ABSTRACT An incompressible steady‐state flow of viscous fluid subjected to a variable thickness rotating surface is examined. The laminar stream also affected by the disk stretching. A horizontal magnetic field applied along stabilize dynamics depending on its orientation and strength. implication effective in regulating thermal energy high‐temperature environments such as turbines nuclear reactors. features are characterized radiation melting heating. phenomenon useful phase‐change materials for efficient storage release like polymer molding or metal casting. Similarity transformations that account utilized dimensionalize equations obtain self‐similar solution. numerical scheme Runge‐Kutta‐Fehlberg (RKF‐45) built‐in package used solution normalized model. salient nature physical parameters illustrated momentum fields. data skin‐friction coefficient local Nusselt number at stretchable calculated. graphical results indicate temperature profiles strongly influenced under consideration. It can be deduced decreases resistance close surface, reducing drag, turn increasing velocity. latent absorbed during process reduces into gradients boundary layer flow. stabilizing effect radial direction observed angle varying from 0 30 degrees. seen dimensionless radius facilitates transport fluid, thus resulting reduction field.

Язык: Английский

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Exploring the impact of morphological nanolayers on mixed convection in MHD nanofluids through a neurocomputational approach

International Journal of Numerical Methods for Heat &amp Fluid Flow, Год журнала: 2025, Номер unknown

Опубликована: Фев. 7, 2025

Purpose This study aims to develop a neurocomputational approach using the Levenberg–Marquardt artificial neural network (LM-ANN) analyze flow and heat transfer characteristics in mixed convection involving radiative magnetohydrodynamic hybrid nanofluids. The focus is on influence of morphological nanolayers at fluid–nanoparticle interface, which significantly impacts coupled mass processes. Design/methodology/approach research simplifies complex system higher-order nonlinear partial differential equations governing between orthogonal coaxially porous disks into ordinary via similarity transformations. These are solved shooting method, parametric studies conducted observe impact varying important parameters. resulting data sets used train, validate test LM-ANN model, ensures high predictive accuracy. Machine learning curve-fitting techniques further enhance model’s capability generate detailed visualizations. Findings findings this indicate that increased nanolayer thickness (0.4–1.6) improves thermal performance, while changes chemical reaction parameter (0.2–1) have notable effect enhancing Sherwood number. results highlight critical role optimizing efficiency MHD Originality/value provides novel framework for understanding dynamics nanofluids by incorporating effects interfacial nanolayers, an aspect often overlooked conventional studies. use trained computational enables high-fidelity analysis, offering new insights enhancement nanofluid systems.

Язык: Английский

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Optimization of Argon Gas Flow Rate for High‐Quality Germanium Crystal Growth in Czochralski Method

Heat Transfer, Год журнала: 2025, Номер unknown

Опубликована: Фев. 20, 2025

ABSTRACT The quality of germanium crystals grown using the Czochralski method critically depends on growth conditions, particularly flow rate inert gases. Despite its importance, impact argon gas thermal field, melt convection, and resultant crystal has not been comprehensively studied. To bridge this gap, we employed computational fluid dynamics finite element analysis to investigate rates ranging from 1 30 L/min. Our results reveal that increasing improves only cooling but also heightens stress by approximately 15% dislocation density 25%, with significant freezing at melt–crucible interface for higher rates. These findings suggest optimization is key minimizing defects enhancing quality. This study provides novel insights into within a setup, offering practical guidance semiconductor manufacturing.

Язык: Английский

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A Semi‐Analytic Hybrid Approach for Solving the Buckmaster Equation: Application of the Elzaki Projected Differential Transform Method (EPDTM)

Engineering Reports, Год журнала: 2025, Номер 7(3)

Опубликована: Март 1, 2025

ABSTRACT The Buckmaster equation, a nonlinear partial differential equation (PDE) central to modeling the dynamics and deformation of flat fluid plates, presents significant analytical computational challenges due its inherent complexity. Traditional solution approaches predominantly rely on numerical methods, which, although effective, are often computationally intensive face limitations in handling nonlinearity. In this study, we propose apply Elzaki projected transform method (EPDTM), semi‐analytic approach, solve equation. EPDTM combines strengths method, offering precise efficient framework tackle such equations. We present approximate solutions for two specific cases generalize our analysis broader form. A detailed comparative results with exact solutions, using tables, 3D plots, error graphs, demonstrates negligible absolute errors achieved by method. Convergence plots further validate rapid alignment showcasing their accuracy reliability. Compared existing significantly reduces demand while maintaining high precision, even when findings underscore potential as robust tool solving complex PDEs This provides an effective alternative traditional opens new opportunities application mathematical scientific domains.

Язык: Английский

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