scholarly journals Free-fall velocities and heat transport enhancement in liquid metal magneto-convection

2021 ◽  
Vol 915 ◽  
Author(s):  
Tobias Vogt ◽  
Juan-Cheng Yang ◽  
Felix Schindler ◽  
Sven Eckert
Keyword(s):  
Liquid Metal ◽  
Heat Transport ◽  
Free Fall ◽  
Transport Enhancement

Abstract

Study on shell side heat transport enhancement of double tube heat exchangers by twisted oval tubes

2021 ◽  
Vol 124 ◽  
pp. 105273
Author(s):  
Xiuzhen Li ◽  
Lin Wang ◽  
Rong Feng ◽  
Zhanwei Wang ◽  
Shijie Liu ◽  
...  
Keyword(s):  
Heat Transport ◽  
Heat Exchangers ◽  
Shell Side ◽  
Transport Enhancement

On Some Differences of the Thermoelectrical Effects in BN-600 and Superphenix

2021 ◽  
Author(s):  
Serguei Podobed
Keyword(s):  
Magnetic Field ◽  
Liquid Metal ◽  
Heat Transport ◽  
Transport Systems ◽  
Liquid Metal Coolant ◽  
Electromagnetic Effects ◽  
Fast Breeder Reactors ◽  
Breeder Reactors ◽  
Metal Coolant ◽  
The Magnetic Field

Abstract The paper discusses specific electromagnetic effects observed in the large circulating masses of liquid metal inherent in the heat transport systems of the commercial fast breeder reactors. It was explained why the criterion Lu of the magnetic field self-excitation in the liquid metal coolant has limiting conditions, determined by the balance nature of the thermoelectric currents circulating in reactor.

Effects of different thermal modes of obstacles on the natural convective Al2O3-water nanofluidic transport inside a triangular cavity

2022 ◽  
pp. 095440622110614
Author(s):  
Nilankush Acharya
Keyword(s):  
Nusselt Number ◽  
Rayleigh Number ◽  
Heat Transport ◽  
Hartmann Number ◽  
Volume Fraction ◽  
High Heat ◽  
Flow Profile ◽  
Galerkin Finite Element ◽  
Transport Enhancement ◽  
Number Formula

This study investigates the Al2O3-water nanofluidic transport within an isosceles triangular compartment with top vertex downwards. The top wall is maintained isothermally cooled and left as well as right inclined walls are made uniformly heated. Two diamond-shaped obstacles are positioned inside the enclosure. The nanofluidic motion is supposed to be magnetically influenced. This investigation includes a fine analysis of how various thermal modes of obstacles affect the velocity and thermal profiles of the nanofluid. Appropriate similarity conversion leads to having a non-dimensional flow profile and is treated with Galerkin finite element scheme. The grid independency, experimental verification, and comparison assessments are directed to explore the model accuracy. The dynamic parameters like Rayleigh number [Formula: see text], nanoparticle volume fraction [Formula: see text], and Hartmann number [Formula: see text] are varied to perceive the noteworthy changes in isotherms, velocity, streamlines, and Nusselt number. The consequences specify average Nusselt number deteriorates for Hartmann number but escalates for nanoparticle concentration and Rayleigh number. Both heated and adiabatic obstacles exhibit high heat transport, while cold obstacles reveal the lowest magnitude in heat transmission. For Rayleigh number, cold obstacles reveal 34.51% heat transport enhancement, whereas it is 52.72% for heated obstacles compared to cold one. mathematics subject classification: 76W05

Heat transport enhancement in confined Rayleigh-Bénard convection feels the shape of the container

2021 ◽  
Author(s):  
Robert Hartmann ◽  
Kai Leong Chong ◽  
Richard J. A. M. Stevens ◽  
Roberto Verzicco ◽  
Detlef Lohse
Keyword(s):  
Heat Transport ◽  
Transport Enhancement ◽  
Bénard Convection ◽  
Benard Convection ◽  
Rayleigh Benard Convection ◽  
Rayleigh Benard

scholarly journals The influence of the cell inclination on the heat transport and large-scale circulation in liquid metal convection

2019 ◽  
Vol 884 ◽  
Author(s):  
Lukas Zwirner ◽  
Ruslan Khalilov ◽  
Ilya Kolesnichenko ◽  
Andrey Mamykin ◽  
Sergei Mandrykin ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Heat Transport ◽  
Large Scale ◽  
Large Scale Circulation ◽  
Image Position

scholarly journals Vibration-induced boundary-layer destabilization achieves massive heat-transport enhancement

2020 ◽  
Vol 6 (21) ◽  
pp. eaaz8239 ◽  
Author(s):  
Bo-Fu Wang ◽  
Quan Zhou ◽  
Chao Sun
Keyword(s):  
Boundary Layer ◽  
Heat Transport ◽  
Boundary Layers ◽  
Thermal Flux ◽  
Mechanical Vibration ◽  
Industrial Applications ◽  
The Body ◽  
Convection Cell ◽  
Thermal Plumes ◽  
Transport Enhancement

Thermal turbulence is well known as a potent means to convey heat across space by a moving fluid. The existence of the boundary layers near the plates, however, bottlenecks its heat-exchange capability. Here, we conceptualize a mechanism of thermal vibrational turbulence that breaks through the boundary-layer limitation and achieves massive heat-transport enhancement. When horizontal vibration is applied to the convection cell, a strong shear is induced to the body of fluid near the conducting plates, which destabilizes thermal boundary layers, vigorously triggers the eruptions of thermal plumes, and leads to a heat-transport enhancement by up to 600%. We further reveal that such a vibration-induced shear can very efficiently disrupt the boundary layers. The present findings open a new avenue for research into heat transport and will also bring profound changes in many industrial applications where thermal flux through a fluid is involved and the mechanical vibration is usually inevitable.

scholarly journals Liquid Metal as a Heat Transport Fluid for Thermal Solar Power Applications

2014 ◽  
Vol 49 ◽  
pp. 627-636 ◽  
Author(s):  
D. Frazer ◽  
E. Stergar ◽  
C. Cionea ◽  
P. Hosemann
Keyword(s):  
Liquid Metal ◽  
Heat Transport ◽  
Solar Power ◽  
Transport Fluid
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