Results 11 to 20 of about 501,635 (311)

The Riemann problem for thermoelastic materials with phase change

open access: yesJournal of Differential Equations, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Harumi Hattori, Hattori, Harumi
openaire   +3 more sources

An enhanced numerical approach for convection phase change problems: A solution of tin melting problem

open access: yesCase Studies in Thermal Engineering, 2020
A comprehensive and efficient numerical phase change model compatible with the stream function-vorticity formulation is developed. The model is based on the source term of the enthalpy-porosity method derived from Darcy's law.
Salaheddine Kaba   +2 more
doaj   +1 more source

On the solutions of a phase change problem with temperature-dependent thermal conductivity and specific heat

open access: yesResults in Physics, 2020
Explicit solutions of similarity-type are obtained for a model conduction heat transfer with phase change into a semi-infinite slab, where the thermal conductivities and specific heats of both phases are a linear function of the temperature.
Lazhar Bougoffa, Ammar Khanfer
doaj   +1 more source

Numerical Simulation of Solidification Around Staggered Tube Arrangement With Convection – Dominated [PDF]

open access: yesEngineering and Technology Journal, 2008
This work describes and analyses thermal storage system as a phase change problem whichinvolves a fluid flowing inside cooled tubes in a staggered arrangement installed in a rectangularduct surrounded by a phase - change material (water).The temperature ...
Waheed S . Mohammed, Zainab H. Hassan
doaj   +1 more source

Modeling of Multi-Layer Phase Change Material in a Triplex Tube under Various Thermal Boundary Conditions

open access: yes, 2022
Nowadays, limited energy resources face ever-growing demands of the modern world. One engineering approach to mitigate this problem which has received considerable attention in recent years is using latent heat thermal storage (LHTS) systems, a ...
Ali M. Sefidan   +4 more
core   +1 more source

One-Dimensional Nonlinear Stefan Problems in Storm’s Materials

open access: yesMathematics, 2013
We consider two one-phase nonlinear one-dimensional Stefan problems for a semi-infinite material x > 0; with phase change temperature Tf : We assume that the heat capacity and the thermal conductivity satisfy a Storm’s condition. In the first case, we
Adriana C. Briozzo, María F. Natale
doaj   +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

A New Method for 3-Satisfiability Problem Phase Transition on Structural Entropy

open access: yesIEEE Access, 2021
The phenomenon of phase transition is an important property of the satisfiability (SAT) problem. It not only determines the difficulty of solving the problem, but also plays an important role in designing fast solving algorithms.
Qingwen Lin, Xiaofeng Wang, Jin Niu
doaj   +1 more source

A Steady State Phase Change Problem [PDF]

open access: yesMathematics of Computation, 1967
In a previous paper [4] the solution to the Stefan problem for a one-dimensional semi-infinite slab with constant boundary and initial conditions was shown to be given by the limit of solutions to a nonlinear parabolic equation for the "specific internal energy." In this paper we obtain the same result for the Stefan problem in a bounded two- or three ...
openaire   +2 more sources

Optimization of Material Properties of Phase Change Materials for Latent Heat Thermal Energy Storage

open access: yesMendel, 2018
Nowadays, people are increasingly interested in renewable energy sources and accumulation of energy for its efficient use. The use of non-renewable resources is progressively decreasing due to their adverse changes in climate conditions and high ...
Michal Brezina   +2 more
doaj   +1 more source

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