Results 11 to 20 of about 3,335,564 (232)

Convective heat transfer within mechanically-ventilated building spaces [PDF]

open access: yes, 1984
A hierarchy of interacting and interdependent approaches have been developed for calculating internal surface convective heat transfer coefficients within mechanically-ventilated rooms.
Alamdari, F.
core   +7 more sources

Experimental heat/mass transfer studies of turbulent wall-bounded jets associated with mechanicallly ventilated enclosures [PDF]

open access: yes, 1986
The development and use of a'n experimental test rig is reported which is capable of modelling two- and three-dimensional wall-bounded air jets. This test rig was primarily produced in order to facilitate the experimental verification of computer ...
Montazerin, N.
core   +7 more sources

Mathematical Modeling of Pseudoplastic Nanofluid Natural Convection in a Cavity with a Heat-Generating Unit and Solid Finned Heat Sink

open access: yesMathematics, 2023
The power-law nanofluid natural convection in a chamber with a thermally generating unit and a solid ribbed structure has been studied in this work. A mixture of carboxymethylcellulose with water and copper nanoparticles is a working fluid illustrating ...
Daria S. Loenko, Mikhail A. Sheremet
doaj   +1 more source

A Numerical Study of Heat Performance of Multi-PCM Brick in a Heat Storage Building

open access: yesMathematics, 2023
Modern technologies of thermal power engineering make it possible to design and build systems using renewable energy sources. Often, energy accumulation and storage require the development and adaptation of appropriate systems, the simplest of which are ...
Nadezhda S. Bondareva   +1 more
doaj   +1 more source

Natural Convection Melting Influence on the Thermal Resistance of a Brick Partially Filled with Phase Change Material

open access: yesFluids, 2021
The constant growth of urban agglomerations with the development of transport networks requires the optimal use of energy and new ways of storing it. Energy efficiency is becoming one of the main challenges of modern engineering.
Nadezhda S. Bondareva   +1 more
doaj   +1 more source

Numerical study of natural convection of fluid with temperature-dependent viscosity inside a porous cube under non-uniform heating using local thermal non-equilibrium approach

open access: yesInternational Journal of Thermofluids, 2023
A numerical investigation of thermogravitational convection within porous cubical region under the non-uniform heating of vertical wall has been performed. The working liquid has a temperature-dependent viscosity according to exponential relation.
Marina S. Astanina, Mikhail A. Sheremet
doaj   +1 more source

Influence of metal foam and nanoparticles on convective melting in a rectangular cavity under heating of bottom wall

open access: yesInternational Journal of Thermofluids, 2023
Highly thermally conductive elements such as metal foams and nanoparticles are often used as heat transfer enhancers for phase change materials. The influence of each factor separately has been well studied, but very few works have been devoted to the ...
Nadezhda S. Bondareva   +1 more
doaj   +1 more source

Computational Study of Heat Transfer inside Different PCMs Enhanced by Al2O3 Nanoparticles in a Copper Heat Sink at High Heat Loads

open access: yesNanomaterials, 2020
The cooling of electronic elements is one of the most important problems in the development of architecture in electronic technology. One promising developing cooling method is heat sinks based on the phase change materials (PCMs) enhanced by nano-sized ...
Nadezhda S. Bondareva   +2 more
doaj   +1 more source

Effect of Thermal Conductivity and Emissivity of Solid Walls on Time-Dependent Turbulent Conjugate Convective-Radiative Heat Transfer [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2019
In the present study, the conjugate turbulent free convection with the thermal surface radiation in a rectangular enclosure bounded by walls with different thermophysical characteristics in the presence of a local heater is numerically studied.
Igor V. Miroshnichenko   +1 more
doaj   +1 more source

Numerical Analysis of Heat Transfer through Hollow Brick Using Finite-Difference Method

open access: yesAxioms, 2022
The goal of the present work is to develop and test in detail a numerical algorithm for solving the problem of complex heat transfer in hollow bricks. The finite-difference method is used to solve the governing equations.
Igor V. Miroshnichenko   +2 more
doaj   +1 more source

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