Results 21 to 30 of about 34,329 (324)

Prediction of Critical Heat Flux for Subcooled Flow Boiling in Annulus and Transient Surface Temperature Change at CHF

open access: yesFluids, 2022
The ability to predict critical heat flux (CHF) is of considerable interest for high-heat equipment, including nuclear reactors. CHF prediction from a mechanistic model for subcooled flow boiling in rod bundles still remains unsolved.
Wei Liu
semanticscholar   +1 more source

Improvement of the subcooled boiling model using a new net vapor generation correlation inferred from artificial neural networks to predict the void fraction profiles in the vertical channel

open access: yesNuclear Engineering and Technology, 2022
In the one-dimensional thermal-hydraulic (TH) codes, a subcooled boiling model to predict the void fraction profiles in a vertical channel consists of wall heat flux partitioning, the vapor condensation rate, the bubbly-to-slug flow transition criterion,
Tae Beom Lee, Yong Hoon Jeong
doaj   +1 more source

Analysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition)

open access: yesNihon Kikai Gakkai ronbunshu, 2014
From the viewpoint of safety design of nuclear reactor and economic terms, for PWR, it is important to clear the mechanism of DNB and predict accurately the critical heat flux under vertical subcooled flow boiling condition.
Mitsuru YAMADA, Shinichi MOROOKA
doaj   +1 more source

Modeling of subcooled flow boiling for hypervapotron in divertor of fusion reactor based on RPI model

open access: yesCase Studies in Thermal Engineering, 2023
The divertor is the key in-vessel component to remove the high heat flux and impurities in magnetic confinement fusion reactor. Hypervapotron (HV) has been developed as one of the candidates for cooling structure of divertor, owing to its excellent heat ...
Zhengze Wu   +6 more
doaj   +1 more source

Experimental Study of Subcooled Flow Boiling on Heterogeneous Wetting Surface

open access: yesZhileng xuebao, 2023
With the recent increase in power density and miniaturization of various equipment, the requirements for compactness and efficiency of heat exchangers become increasingly stringent. Micro-structured surfaces have a significant impact on flow patterns and
Sun Jia, Lin Yuhao, Li Wei
doaj  

Bubble Sliding Characteristics and Dynamics of R134a during Subcooled Boiling Flow in a Narrow Gap

open access: yesMathematics, 2023
The numerical method was used to study bubble sliding characteristics and dynamics of R134a during subcooled flow boiling in a narrow gap. In the numerical method, the volume of fraction (VOF) model, level set method, Lee phase change model and the SST k
Bo Yu   +5 more
doaj   +1 more source

Experimental Study on Heat Transfer and Flow Characteristics in Subcooled Flow Boiling in a Microchannel

open access: yesJournal of Engineering, 2020
The current study presents an experimental investigation of heat transfer and flow characteristic for subcooled flow boiling of deionized water in the microchannel heat sink.
Suha A. Mohammed, Ekhlas M. Fayyadh
doaj   +1 more source

Dynamics of a two-dimensional vapor bubble confined between superheated or subcooled parallel plates [PDF]

open access: yes, 2010
The dynamics of a long, two-dimensional vapor bubble confined in the gap between two superheated or subcooled parallel plates is analyzed theoretically. The unsteady expansion and/or contraction of the bubble is driven by mass transfer between the liquid
Das, K.S., Wilson, S.K.
core   +1 more source

CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023
This paper presents the effects of minichannel geometrical configuration on flow structures, hydrodynamics, and heat transfer behavior of the subcooled flow boiling process in a cooling system with high heat flux.
Amal Igaadi   +2 more
doaj   +1 more source

Experimental investigation of non-uniform heating effect on flow boiling instabilities in a microchannel-based heat sink [PDF]

open access: yes, 2011
Copyright @ 2011 ElsevierTwo-phase flow boiling in microchannels is one of the most promising cooling technologies for coping with high heat fluxes produced by the next generation of central processor units (CPUs).
A.J. Walton   +17 more
core   +1 more source

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