Results 21 to 30 of about 451 (209)

Validation of the local thermal equilibrium assumption for free convection boundary layer flow over a horizontal cylinder embedded in an infinite saturated porous medium

open access: yesResults in Physics, 2023
This study numerically investigated the validity of the local thermal equilibrium model for free convection over a horizontal cylinder embedded in an infinitely packed bed of spherical particles saturated with Newtonian fluid.
Behnam Keshavarzian   +1 more
doaj   +1 more source

Quantum algorithms from fluctuation theorems: Thermal-state preparation [PDF]

open access: yesQuantum, 2022
Fluctuation theorems provide a correspondence between properties of quantum systems in thermal equilibrium and a work distribution arising in a non-equilibrium process that connects two quantum systems with Hamiltonians $H_0$ and $H_1=H_0+V$.
Zoe Holmes   +4 more
doaj   +1 more source

An uncoupled radial thermoporoelastic model with local thermal non-equilibrium [PDF]

open access: yesIOP Conference Series: Earth and Environmental Science, 2019
Abstract A new analytic model is introduced to describe rock deformation produced by fluid injection / extraction in geothermal reservoirs. This model is fully coupled under isothermal conditions and thermally uncoupled if local thermal non-equilibrium (LTNE) is considered.
openaire   +1 more source

Numerical and Experimental Study on Convective Heat Transfer Characteristics in Foam Materials

open access: yesEnergies, 2020
Foam materials are widely used in heat exchange because of their high porosity and large specific surface area. Correctly characterizing heat transfer characteristics is the key to ensuring efficient heat transfer.
Hongyan Lu   +3 more
doaj   +1 more source

Sharp Instability Estimates for Bidisperse Convection with Local Thermal Non-equilibrium

open access: yesTransport in Porous Media, 2023
Abstract We analyse a theory for thermal convection in a Darcy porous material where the skeletal structure is one with macropores, but also cracks or fissures, giving rise to a series of micropores. This is thus thermal convection in a bidisperse, or double porosity, porous body.
Franchi F., Nibbi R., Straughan B.
openaire   +2 more sources

Non-conformal attractor in boost-invariant plasmas

open access: yesPhysics Letters B, 2022
We study the dissipative evolution of (0+1)-dimensionally expanding media with Bjorken symmetry using the Boltzmann equation for massive particles in relaxation-time approximation.
Chandrodoy Chattopadhyay   +4 more
doaj   +1 more source

Locality of temperature and correlations in the presence of non-zero-temperature phase transitions

open access: yesNew Journal of Physics, 2021
While temperature is well understood as an intensive quantity in standard thermodynamics, it is less clear whether the same holds in quantum systems displaying correlations with no classical analogue. The problem lies in the fact that, under the presence
Senaida Hernández-Santana   +4 more
doaj   +1 more source

Effects of porous medium filling on thermally developing forced convection in a parallel plate channel

open access: yesInternational Journal of Thermofluids, 2023
This study obtains the semi-analytical solutions and explores the thermal characteristics of a thermally developing flow in a parallel plate channel, partially filled with a porous medium at the core, while considering local thermal non-equilibrium ...
M. Farrukh Baig   +3 more
doaj   +1 more source

Local thermal non-equilibrium effects on radiative ternary hybrid nanofluid with thermophoresis and Stefan Blowing impacts: Yamada-Ota and Xue model

open access: yesJournal of Radiation Research and Applied Sciences
This paper examines the influence of Stefan blowing on the Darcy-Forchheimer 2D flow of a trihybrid liquid by taking into account local thermal non-equilibrium conditions and thermophoretic particle deposition in the manifestation of nanoparticles.
Ahmed M. Galal   +4 more
doaj   +1 more source

DOUBLE DIFFUSIVE FREE CONVECTION IN A PACKED BED SQUARE ENCLOSURE BY USING LOCAL THERMAL NON-EQUILIBRIUM (LTNE) MODEL

open access: yesJournal of Engineering, 2023
In the present study, free convection heat and mass transfer of fluid in a square packed bed enclosure is numerically investigated. For the considered geometrical shape, the left vertical wall of enclosure was assumed to be kept at high temperature and ...
Ahmed N. Mehdy
doaj   +1 more source

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