Three dimensional void distribution measurement of salt-water pool-boiling in 5 × 5 bundle geometry with X-ray CT system
Sign Up to like & getrecommendations! Published in 2019 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2019.01.043
Abstract: Abstract Boiling of sea water may occur in a pressure vessel of light water (nuclear) reactors to flood the nuclear fuel as an accident management procedure. Another salt water is borated water, which will be… read more here.
Keywords: salt water; void fraction; water; geometry ... See more keywords
New void fraction equations for two-phase flow in helical heat exchangers using artificial neural networks
Sign Up to like & getrecommendations! Published in 2018 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2017.10.139
Abstract: Abstract In this research, two new empirical equations based on Artificial Neural Network (ANN) were developed to determine the new void fraction in two-phase flow inside helical vertical coils with water as work fluid. The… read more here.
Keywords: void fraction; two phase; phase flow; heat ... See more keywords
Evaluation analysis of correlations for predicting void fraction of condensation hydrocarbon refrigerant upward flow in a spiral pipe
Sign Up to like & getrecommendations! Published in 2018 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2018.05.089
Abstract: Abstract Accurate prediction of void fraction for condensation hydrocarbon refrigerant upward flow in a spiral pipe is very important for the tube-side design of spiral wound heat exchange (SWHE) using in liquid natural gas (LNG)… read more here.
Keywords: void fraction; fraction; spiral pipe; fraction condensation ... See more keywords
A hybrid multiphase flow model for the prediction of both low and high void fraction nucleate boiling regimes
Sign Up to like & getrecommendations! Published in 2020 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2020.115625
Abstract: Abstract The improvement of a hybrid (a combination of Volume-of-Fluid (VOF) and Eulerian model) multiphase flow solver for the numerical prediction of high- and low-void fraction flow boiling regimes is presented in this article. These… read more here.
Keywords: void fraction; model; prediction; flow ... See more keywords
Void Fraction in Vertical Intermediate and Inlet Headers of Microchannel Heat Exchangers: Experiments and Models
Sign Up to like & getrecommendations! Published in 2021 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2021.117498
Abstract: Abstract The void fraction in headers of microchannel heat exchangers (MCHEs) affects the refrigerant charge, distribution, pressure drop, and heat transfer coefficient of MCHEs. However, due to the complex geometries of headers, experimental measurements of… read more here.
Keywords: headers microchannel; void fraction; inlet headers; fraction headers ... See more keywords
Axial and radial void fraction measurements in convective boiling flows
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Engineering Science"
DOI: 10.1016/j.ces.2016.04.038
Abstract: Abstract This work is inspired by the need to have measurements and predictive capability on vertical saturated boiling flows, which are of importance in boiling water nuclear reactors. In these systems, sub-cooled water flows upwards… read more here.
Keywords: void fraction; water; flux; axial radial ... See more keywords
Void fraction measurement in cryogenic flows. Part II: Void fraction capacitive sensor performances in chilldown experiments
Sign Up to like & getrecommendations! Published in 2018 at "Cryogenics"
DOI: 10.1016/j.cryogenics.2018.10.002
Abstract: Abstract This manuscript describes the work performed on void fraction measurements a cryogenic flow by means of a customized capacitive sensor. In a preceding activity, described in Part I, the instrument was developed and validated… read more here.
Keywords: void fraction; chilldown experiments; sensor performances; fraction ... See more keywords
Void fraction and pressure drop during external upward two-phase cross flow in tube bundles – part II: Predictive methods
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2016.08.003
Abstract: Abstract The present paper is the Part II of a broad study concerning void fraction and pressure drop for air-water upward external flow across tube bundles. In the Part I, the experimental facility and the… read more here.
Keywords: part; void fraction; two phase; pressure drop ... See more keywords
Gas–liquid flow of sub-millimeter bubbles at low void fractions: Experimental study of bubble size distribution and void fraction
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2018.04.011
Abstract: Abstract This work studies gas–liquid flow of small bubbles ( −1 ) that is encountered in human bloodstream during Decompression Sickness and is also relevant to two-phase applications such as flow boiling in macro-channels. Two… read more here.
Keywords: void fraction; gas liquid; bubble size; fraction ... See more keywords
Assessment of void fraction models and correlations for subcooled boiling in vertical upflow in a circular tube
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2021.121060
Abstract: Abstract This paper provides a comprehensive review as well as assessment of accuracy of published models and correlations for net vapor generation point, vapor quality, and void fraction in subcooled vertical upflow boiling in a… read more here.
Keywords: models correlations; vertical upflow; accuracy; fraction ... See more keywords
Modeling of void fraction and relative velocity covariance for dispersed bubbly and intermittent flows in horizontal channels
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2021.121827
Abstract: Abstract The interfacial drag force governs the momentum exchange between gas and liquid phases and is a key parameter in predicting void fraction using a one-dimensional thermal-analysis code. The interfacial drag force is formulated by… read more here.
Keywords: fraction; velocity covariance; void fraction; relative velocity ... See more keywords