Results 11 to 20 of about 22,182 (258)

Numerical Analysis of a Supercritical Heat Transfer of Cryogenic Methane in Regeneratively Cooled Rocket Engine [PDF]

open access: yesINCAS Bulletin
A comparative study of supercritical heat transfer in a regeneratively cooled rocket engine was conducted using three-dimensional numerical simulations for two channel geometries: rectangular and square. Various constant heat fluxes, flow velocities, and
Mohammed Amine DJEFFAL   +5 more
doaj   +1 more source

The evaluation of steam condensing process in the presence of fouling on the example of a single tube derived from the steam power plant heat exchanger

open access: yesScientific Journal of Gdynia Maritime University, 2023
Additional thermal resistance caused by fouling gathered on the heat transfer surfaces of condensers and regenerative heat exchangers within steam power plants most often results in heat transfer process deterioration. It manifests itself, among others,
Tomasz Hajduk
doaj   +1 more source

Study on Flow and Heat Transfer Characteristics of Supercritical Kerosene in a Round Tube [PDF]

open access: yesMATEC Web of Conferences, 2020
The finite volume discrete solution of the Navier-Stokes equation and the RNG model of the turbulence model are used to numerically simulate the flow and heat transfer characteristics of supercritical kerosene in a circular tube. The results show that as
Gao Feng   +4 more
doaj   +1 more source

Modeling and Simulations of Deteriorated Turbulent Heat Transfer in Wall-Heated Cylindrical Tube [PDF]

open access: yesJournal of Verification, Validation and Uncertainty Quantification, 2019
Abstract This paper discusses the modeling and simulations of deteriorated turbulent heat transfer (DTHT) for a wall-heated fluid flows, which can be observed in gas-cooled nuclear power reactors during pressurized conduction cooldown (PCC) event due to loss of force circulation flow.
Prasad Vegendla, Rui Hu
openaire   +1 more source

Numerical investigation of supercritical heat transfer of water flowing in vertical and horizontal t

open access: yesJournal of Thermal Engineering, 2021
Over a decade, coal-based thermal power plants are upgraded to operate at supercritical pressure conditions due to its high efficiency and low emissions. Water wall panels of a typical supercritical boiler are structured spirally in the lower furnace and
Anand SUNDRAVEL   +2 more
doaj   +1 more source

Heat Transfer Studies of Supercritical Water Flows in an Upward Vertical Tube [PDF]

open access: yesJournal of Heat and Mass Transfer Research, 2019
In this paper, an investigation of heat transfer characteristics at supercritical pressure fluid flowing in a uniformly heated vertical tube has been carried out.
Deenadayalan Santhosh Kumar   +2 more
doaj   +1 more source

Investigation of Heat Transfer Enhancement or Deterioration of Variable Properties Al2O3-EG-water Nanofluid in Buoyancy Driven Convection [PDF]

open access: yesTransport Phenomena in Nano and Micro Scales, 2014
In this study, the natural convection heat transfer of variable properties Al2O3-EG-water nanofluid in a differentially heated rectangular cavity has been investigated numerically.
H. Khorasanizadeh   +2 more
doaj   +1 more source

Experimental study on heat transfer characteristics of supercritical carbon dioxide natural circulation

open access: yesNuclear Engineering and Technology, 2022
An experimental study has been conducted to investigate the heat transfer characteristics of supercritical carbon dioxide (sCO2) uniformly heated in the horizontal circular smooth tube.
Pengfei Wang   +6 more
doaj   +1 more source

Numerical Investigation of Heat Transfer to Supercritical Water in Vertical Tube under Semicircular Heating Condition

open access: yesEnergies, 2019
In-depth understanding and analysis of turbulent convection heat transfer of supercritical water under semicircular heating conditions play a major role in system design and security.
Zhenchuan Wang, Guoli Qi, Meijun Li
doaj   +1 more source

Experimental Studies of Natural Convection Heat Transfer of AlO/DI Water Nanoparticle Suspensions (Nanofluids)

open access: yesAdvances in Mechanical Engineering, 2010
The natural convection heat transfer characteristics of Al 2 O 3 / water nanofluids comprised of 47 nm, Al 2 O 3 and water, with volume fractions ranging from 0.5% through 6%, has been investigated through a set of experimental measurements.
Calvin H. Li, G. P. Peterson
doaj   +1 more source

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