Results 11 to 20 of about 138,361,326 (265)

Thermal quadrupole method with internal heat sources [PDF]

open access: yes, 2012
A new method based on the thermal quadrupoles technique for heat transfer modelling in multilayered slabs with heat sources is proposed. Classical thermal quadrupoles use hyperbolic functions and numerical problems occur according to the argument value ...
A. Kusiak   +21 more
core   +1 more source

Thermal conductivity measurement of liquids in a microfluidic device [PDF]

open access: yes, 2010
A new microfluidic-based approach to measuring liquid thermal conductivity is developed to address the requirement in many practical applications for measurements using small (microlitre) sample size and integration into a compact device.
M. R. Bown   +36 more
core   +1 more source

The thermal behaviour of three different auger pressure grouted piles used as heat exchangers [PDF]

open access: yes, 2014
Three auger pressure grouted (APG) test piles were constructed at a site in Richmond, Texas. The piles were each equipped with two U-loops of heat transfer pipes so that they could function as pile heat exchangers.
Brettmann, T   +11 more
core   +1 more source

Stationary solutions for the Cahn-Hilliard equation [PDF]

open access: yes, 1998
We study the Cahn-Hilliard equation in a bounded domain without any symmetry assumptions. We assume that the mean curvature of the boundary has a nongenerate critical point.
Winter, M, Wei, J
core   +2 more sources

Adaptive step size controllers based on Runge-Kutta and linear-neighbor methods for solving the non-stationary heat conduction equation

open access: yesNetworks and Heterogeneous Media, 2023
<abstract><p>We systematically test families of explicit adaptive step size controllers for solving the diffusion or heat equation. After discretizing the space variables as in the conventional method of lines, we are left with a system of ordinary differential equations (ODEs).
Mahmoud Saleh   +2 more
openaire   +1 more source

Lack of controllability of the heat equation with memory [PDF]

open access: yes, 2012
We consider a model for the heat equation with memory, which has infinite propagation speed, like the standard heat equation. We prove that, in spite of this, for every T > 0 there exist square integrable initial data which cannot be steered to hit zero ...
Andrei Halanay, Pandolfi, Luciano
core   +1 more source

Heat conduction problem analytical solution at time dependent heat transfer coefficients

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2008
With the help of thermal balance integrated method and on the basis of introduction of temperature indignation front the analytical decision of a problem of non-stationary heat conductivity is obtained under boundary conditions of the third kind with ...
V. A. Kudinov, E. V. Stefanyuk
doaj   +1 more source

NON-STATIONARY THERMAL CONDUCTIVITY OF CHAIN STRUCTURES AT LOW TEMPERATURES

open access: yesТонкие химические технологии, 2017
The matter of thermal conductivity is considered in an approximation, in which the free length of phonons is limited and doesn't depend on temperature, so that the temperature behavior of thermal conductivity coefficient is only determined by thermal ...
V. V. Golodnaya, E. S. Savin
doaj   +1 more source

Shopping mall mathematical modelling as an object with distributed parameters

open access: yesТехнічна інженерія, 2023
Shopping mall is an energy-intensive object with distributed parameters. The number of people in building, high energy prices, buildings operation standards, premises types set the requirements for the microclimate creation and maintenance.
О.M.
doaj   +1 more source

Anisotropic thermal conductivity and permeability of compacted expanded natural graphite [PDF]

open access: yes, 2010
The anisotropic thermal conductivities and permeabilities are investigated for discs and plates of compacted expanded natural graphite. The measuring directions of heat conductivity and permeability are both parallel and perpendicular to the pressing ...
Tamainot-Telto, Zacharie   +4 more
core   +1 more source

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