Results 1 to 10 of about 8,820,269 (182)

New Nusselt Number Correlation and Turbulent Prandtl Number Model for Turbulent Convection with Liquid Metal Based on Quasi-DNS Results

open access: yesEnergies
Liquid metal is widely used as the primary coolant in many advanced nuclear energy systems. Prandtl number of liquid metal is much lower than that of the conventional coolant of water or gas. Based on the Reynolds analogy, the turbulent Prandtl number is
Fang Liu, Sifan Peng, Xuefeng Lyu
exaly   +4 more sources

The SquAd derivation: A Square Additive approach to the turbulent Prandtl number [version 3; peer review: 1 approved, 3 approved with reservations, 1 not approved] [PDF]

open access: yesOpen Research Europe, 2023
Liquid metals have been chosen as primary coolant of innovative nuclear systems under current development. They present a very high thermal conductivity and hence a very low molecular Prandtl number.
Vincent Moreau
doaj   +2 more sources

Proposal of a turbulent Prandtl number model for Reynolds-averaged Navier–Stokes approach on the modeling of turbulent heat transfer of low-Prandtl number liquid metal

open access: yesFrontiers in Energy Research, 2022
Because of their high molecular heat conductivity, low-Prandtl number liquid metal is a promising candidate coolant for various designs of advanced nuclear systems such as liquid metal–cooled fast reactors and accelerator-driven sub-critical system (ADS).
Xiang Chai, Xi Huang
exaly   +3 more sources

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

A New Anisotropic Four-Parameter Turbulence Model for Low Prandtl Number Fluids

open access: yesFluids, 2021
Due to their interesting thermal properties, liquid metals are widely studied for heat transfer applications where large heat fluxes occur. In the framework of the Reynolds-Averaged Navier–Stokes (RANS) approach, the Simple Gradient Diffusion Hypothesis (
Giacomo Barbi   +2 more
doaj   +1 more source

Hot-wire experimental investigation on turbulent Prandtl number in a rotating non-isothermal turbulent boundary layer

open access: yesPropulsion and Power Research, 2020
This experiment used a parallel array of hot wire probes to simultaneously measure the temperature and velocity fields in the non-isothermal turbulent boundary layer of a rotating straight channel. The Reynolds numbers are 15,000 and 25,000, respectively.
Ran Gao   +4 more
doaj   +1 more source

Turbulent Transport in a Stratified Shear Flow

open access: yesJournal of Marine Science and Engineering, 2023
Within the framework of the theory of unsteady turbulent flows in a stratified fluid, a new parameterization of the turbulent Prandtl number is proposed.
Daria Gladskikh   +4 more
doaj   +1 more source

Numerical Investigation of Turbulent Heat Transfer Properties at Low Prandtl Number

open access: yesFrontiers in Energy Research, 2020
The sodium-cooled fast reactor (SFR), which is one of the most promising candidates for meeting the goal declared by the Generation IV International Forum (GIF), has drawn a lot of attention.
Xiang Chai   +3 more
doaj   +1 more source

On the turbulent prandtl number in stably stratified turbulence by second order models

open access: yesJournal of Thermal Engineering, 2020
The aim of this work is to investigate the behavior of the Turbulent Prandtl number by second order modeling of a stably stratified homogeneous sheared turbulence.
Saida NAİFER, M. BOUZAİANE
doaj   +1 more source

Development and Assessment of an Isotropic Four-Equation Model for Heat Transfer of Low Prandtl Number Fluids

open access: yesFrontiers in Energy Research, 2022
In the simple gradient diffusion hypothesis, the turbulent Prandtl number (Prt) with a constant of 0.85 is difficult to accurately predict for liquid metals having low Prandtl numbers (Pr), while a four-equation model can improve this solution by ...
Xingkang Su   +12 more
doaj   +1 more source

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