Results 31 to 40 of about 56,783 (308)

Investigation of moving trapezoidal and exponential fins with multiple nonlinearities

open access: yesAin Shams Engineering Journal, 2023
In this article, we study moving longitudinal and exponential fins with variable thermal conductivity, thermal emissivity, and heat transfer coefficient. The problem is solved numerically using shooting technique.
Zia Ud Din   +3 more
doaj   +1 more source

Convection of Moist Saturated Air: Analytical Study

open access: yesAtmosphere, 2016
In the present work, the steady-state stationary thermal convection of moist saturated air in a lower atmosphere has been studied theoretically. Thermal convection was considered without accounting for the Coriolis force, and with only the vertical ...
Robert Zakinyan   +3 more
doaj   +1 more source

Thermal properties of vesicular rhyolite [PDF]

open access: yes, 1994
Thermal diffusivity of rhyolite melt and rhyolite foam (70–80% porosity) has been measured using the radial heat transfer method. Cylindrical samples (length 50–55 mm, diameter 22 mm) of rhyolite melt and foam have been derived by heating samples of ...
Bagdassarov, Nikolai   +1 more
core   +1 more source

Heat conduction and thermal convection on thermal front movement during natural gas hydrate thermal stimulation exploitation

open access: yesOil & Gas Science and Technology, 2018
Natural Gas Hydrate (NGH) has attracted increasing attention for its great potential as clean energy in the future. The main heat transfer mode that controls the thermal front movement in the process of NGH exploitation by heat injection was discussed ...
Hao Yongmao   +5 more
doaj   +1 more source

Reynolds stresses and mean fields generated by pure waves: applications to shear flows and convection in a rotating shell [PDF]

open access: yes, 2008
A general reformulation of the Reynolds stresses created by two-dimensional waves breaking a translational or a rotational invariance is described. This reformulation emphasizes the importance of a geometrical factor: the slope of the separatrices of the
Simitev, R.   +6 more
core   +1 more source

Sheared Thermal Convection

open access: yes, 2023
In many natural phenomena and industrial processes, thermal convection is often driven by the combination of buoyancy and shear. Therefore, in this dissertation, thermal convection with imposed shear forcing has been studied using direct numerical simulations of Rayleigh–Bénard convection and vertical convection with imposed Couette or Poiseuille type ...
openaire   +2 more sources

Air Convection in the Active Layer of Rock Glaciers

open access: yesFrontiers in Earth Science, 2020
Coarse blocks are an abundant surface cover in mountainous permafrost landscapes. In this coarse blocky layer, air convection occurs and has a significant influence on the ground thermal regime of the underlying permafrost.
Jonas Wicky, Christian Hauck
doaj   +1 more source

Inverse cascades of kinetic energy and thermal variance in three-dimensional horizontally extended turbulent convection

open access: yesPhysical Review Research, 2022
Inverse cascades of kinetic energy and thermal variance in the subset of vertically homogeneous modes in spectral space are found to cause a slow aggregation to a pair of convective supergranules that eventually fill the whole horizontally extended ...
Philipp P. Vieweg   +3 more
doaj   +1 more source

The Cheng-Minkowycz problem for quadratic convective and radiative heat transfer in a nanofluid saturated porous medium: A revised model

open access: yesCase Studies in Thermal Engineering, 2023
The characteristics of heat transport in a porous medium saturated by a nanoliquid subject to non-linear variations of density-temperature relation and a novel quadratic thermal radiation are studied.
Puneet Rana, Akash Kumar, Sarita Pippal
doaj   +1 more source

Onset of convection in a hybrid nanofluid porous layer

open access: yesZaštita Materijala
Thermal instability in nanofluid–porous systems is of significant interest due to its direct relevance in advanced thermal management, energy storage, and heat transfer enhancement technologies.
Sushma Patil   +3 more
doaj   +1 more source

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