Results 21 to 30 of about 15,407,758 (296)

Application of phase change cold storage technology in the low carbon transition of cold chain transportion

open access: yes能源环境保护, 2023
The high energy consumption and high emissions of traditional cold chain transportation are considered to be a major challenge to achieving ′carbon peaking′ and ′carbon neutrality′ in the logistics and transportation industry.
ZHU Aochang, LI Chuanchang*
doaj   +1 more source

A Review of Structural Characteristics of Satisfiability Problems [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2023
Satisfiability ( SAT) problem is the basic problem of artificial intelligence, which is also a hard problem of NP. It has practical applications in machine learning, pattern recognition and natural language processing.
WANG Xiaofeng   +5 more
doaj   +1 more source

A Series Solution for Heat Conduction Problem with Phase Change in a Finite Slab

open access: yesAbstract and Applied Analysis, 2014
A two-dimensional differential transform method is applied to solve one-dimensional phase change problems in a slab of finite thickness, which is subjected to convective thermal loading at one surface and a constant prescribed temperature at the other ...
Ryoichi Chiba
doaj   +1 more source

On the one-phase reduction of the Stefan problem with a variable phase change temperature [PDF]

open access: yes, 2015
The one-phase reduction of the Stefan problem, where the phase change temperature is a variable, is analysed. It is shown that problems encountered in previous analyses may be traced back to an incorrectly formulated Stefan condition.
Font, F, Myers, Timothy
core   +1 more source

An Accurate Approximation of the Two-Phase Stefan Problem with Coefficient Smoothing

open access: yesMathematics, 2020
In this work, we consider the heat transfer problems with phase change. The mathematical model is described through a two-phase Stefan problem and defined in the whole domain that contains frozen and thawed subdomains.
Vasily Vasil’ev, Maria Vasilyeva
doaj   +1 more source

Numerical methods in phase-change problems [PDF]

open access: yesArchives of Computational Methods in Engineering, 1994
This paper summarizes the state of the art of the numerical solution of phase-change problems. After describing the governing equations, a review of the existing methods is presented. The emphasis is put mainly on fixed domain techniques, but a brief description of the main front-tracking methods is included.
Sergio R. Idelsohn   +2 more
openaire   +1 more source

Parametric analysis of influencing factors in Phase Change Material Wallboard (PCMW) [PDF]

open access: yes, 2013
Incorporating Phase Change Materials (PCMs) into traditional building structures has been considered as an effective way to reduce the mismatch between energy supply and demand and in turn to minimise energy consumption (cooling/heating energy).
Tian, Y.   +7 more
core   +1 more source

An alternative two-phase formulation and analytical solution for a Stefan problem in one-dimension accounting for volume change and sensible heat

open access: yesInternational Journal of Thermofluids
Stefan problems, or free boundary problems, in the phase change process occur in many engineering problems. This paper develops a compact formula for a two-phase melting process in a one-dimensional semi-infinite slab with a novel approach.
Minh-Thu T. Huynh   +2 more
doaj   +1 more source

Laboratory Tests and Numerical Simulation of the Thermal–Mechanical Response of a Fiber-Reinforced Phase Change Concrete Pile

open access: yesApplied Sciences, 2023
The critical problem restricting the development and application of phase change energy piles is that adding phase change materials to concrete generally reduces its thermal conductivity.
Xiaohua Bao   +5 more
doaj   +1 more source

Analytical modelling of transient phase-change problems

open access: yesInternational Journal of Energy Research, 2000
In this paper, an analytical solution for the temporal location of moving solid–liquid interface of a phase-change process, occurring in parallel plate channels, is presented. The motion of the solid–liquid interface is governed by the convection from the surface of one of the plates, while constant heat supply is assumed to occur on the surface of the
Ahmet Z. Sahin, Ibrahim Dincer
openaire   +1 more source

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