Results 1 to 10 of about 21,181 (318)

Compressibility Effects on Turbulent Heat Transfer of Natural Convection in a Square Cavity

open access: yesIndonesian Journal of Applied Physics, 2023
Heat transfer in turbulent flows is one of the essential topics in power plants and thermal-based engineering. This study aims to analyze the effects of density changes due to heat transfer in a turbulent environment—which is usually neglected because it
Rida Siti Nur'aini Mahmudah   +2 more
doaj   +1 more source

Spectral Analysis on Transport Budgets of Turbulent Heat Fluxes in Plane Couette Turbulence

open access: yesEnergies, 2022
In recent years, scale-by-scale energy transport in wall turbulence has been intensively studied, and the complex spatial and interscale transfer of turbulent energy has been investigated.
Takuya Kawata, Takahiro Tsukahara
doaj   +1 more source

Turbulent-Prandtl-number models for liquid lead-bismuth in triangular rod bundles

open access: yesHe jishu, 2022
BackgroundIn order to accurately predict the heat transfer characteristics in the sub-channel of fuel assembly for the low Prandtl number fluid, it is necessary to select a suitable turbulent-Prandtl-number model.PurposeThis study aims at the ...
LIU Shuyong   +5 more
doaj   +1 more source

Numerical Analysis of Forced Convection of Nanofluid under Turbulent Flow between Two Parallel Plates

open access: yesJournal of Applied Mathematics, 2022
As research shows, in new and renewable energy systems, including solar energy, the study of turbulent flow is of great importance due to its high efficiency in heat transfer.
Iman Pishkar, S. Mohammad Hoseini
doaj   +1 more source

Topology Optimization of Turbulent Flow Cooling Structures Based on the k-ε Model

open access: yesEntropy, 2023
Topology optimization (TO) is an effective approach to designing novel and efficient heat transfer devices. However, the TO of conjugate heat transfer has been essentially limited to laminar flow conditions only.
Yiwei Sun, Menglong Hao, Zexu Wang
doaj   +1 more source

Radiative Heat Transfer Analysis in a Turbulent Natural Convection Obtained from Direct Numerical Simulation

open access: yesJournal of Thermal Science and Technology, 2011
Thermal radiation in a turbulent natural convection plays an important role in a wide area of engineering and nature. The purposes of this study are to investigate the effects of turbulent fluctuation on radiative heat transfer, and to evaluate radiative
Atsushi SAKURAI   +3 more
doaj   +1 more source

Enhancement of Turbulent Convective Heat Transfer using a Microparticle Multiphase Flow

open access: yesEnergies, 2020
The turbulent heat transfer enhancement of microfluid as a heat transfer medium in a tube was investigated. Within the Reynolds number ranging from 7000 to 23,000, heat transfer, friction loss and thermal performance characteristics of graphite, Al2O3 ...
Tao Wang, Zengliang Gao, Weiya Jin
doaj   +1 more source

EXPERIMENTAL INVESTIGATION OF CONVECTIVE HEAT TRANSFER IN A NARROW RECTANGULAR CHANNEL FOR UPWARD AND DOWNWARD FLOWS

open access: yesNuclear Engineering and Technology, 2014
Heat transfer characteristics in a narrow rectangular channel are experimentally investigated for upward and downward flows. The experimental data obtained are compared with existing data and predictions by many correlations.
DAESEONG JO   +4 more
doaj   +1 more source

The rate of information transfer as a measure of ocean–atmosphere interactions [PDF]

open access: yesEarth System Dynamics, 2023
Exchanges of mass, momentum and energy between the ocean and atmosphere are of large importance in regulating the climate system. Here, we apply for the first time a relatively novel approach, the rate of information transfer, to quantify interactions ...
D. Docquier, S. Vannitsem, A. Bellucci
doaj   +1 more source

Heat Transfer Enhancement of TiO2/Water Nanofluid at Laminar and Turbulent Flows: A Numerical Approach for Evaluating the Effect of Nanoparticle Loadings

open access: yesEnergies, 2018
Titania-based nanofluid flowing inside a circular tube under the boundary condition of a horizontal uniformly heated wall was investigated numerically for both laminar and turbulent flows.
Budi Kristiawan   +4 more
doaj   +1 more source

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