Results 61 to 70 of about 90,225 (303)

Convective-radiation boundary impact on heat transfer in buoyant viscous layers

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy
Convective–radiation boundary conditions are essential in fluid flow analysis, as they capture the combined effects of convection and radiation on heat transfer and system thermal behaviour, with applications in thermal processing, solar energy systems ...
N. Vishnu Ganesh   +3 more
doaj   +1 more source

Inverse and efficiency of heat transfer convex fin with multiple nonlinearities [PDF]

open access: yes, 2021
In this article, we first propose the novel semi-analytical technique—modified Adomian decomposition method (MADM)—for a closed-form solution of the nonlinear heat transfer equation of convex profile with singularity where all thermal parameters are ...
Dilip K. Prasad   +7 more
core   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm   +3 more
wiley   +1 more source

Entropy generation analysis for vertical flat and corrugated surface by natural convection and radiation at constant heat flux

open access: yesCase Studies in Thermal Engineering
Previous literature has explained heat transfer by natural convection, radiation and the effect of entropy generation separately. This study focused on the entropy generation of heat transfer by natural convection and radiation instantaneously from ...
Louay Abd Al-Azez Mahdi   +2 more
doaj   +1 more source

Heat Transfer Augmentation : Radiative-Convective Heat Transfer in a Tube With Fiber Array Inserts [PDF]

open access: yes, 2010
Gas-phase heat transfer plays a critical role in many high temperature applications, such as preheaters, combustors, and other thermal equipment. In such cases common heat transfer augmentation methods rely on the convective component alone to achieve ...
Hantsch, A.   +2 more
core   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

Evaluation of Radiant Heat Transfer Influence on the Temperature Field of Fuel Element Microcell of Pressurized Water-Cooled Nuclear Reactor

open access: yesГлобальная ядерная безопасность, 2022
Optimization of the core composition of the pressurized water reactors is associated with the calculation of the temperature fields of heat exchange microcells containing separate fuel elements.
V. K. Semenov   +3 more
doaj   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb   +6 more
wiley   +1 more source

In-cylinder radiation heat transfer in a small direct injection diesel engine [PDF]

open access: yes, 2012
Diesel engine downsizing is of current interest because of the infinite nature of crude oil reserves and the high efficiency of the diesel cycle. Scaling and downsizing studies can make substantial contributions to the optimization of small diesel engine
Meor Said, Mior Azman
core  

Impact of mixed convective and radiative heat transfer in spiral-coiled tubes [PDF]

open access: yes, 2019
Spiral-coiled tube heat exchangers (SCTHE) have higher heat transfer as compared to the conventional heat transfer devices and are extensively used to extract heat from exhaust gases in the chemical processing industries and also from sunlight for ...
Kushwaha, Naveen   +5 more
core   +1 more source

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