Results 11 to 20 of about 8,843 (212)

Sustained and Enhanced Nucleate Boiling Using Hierarchical Architectures at Large Superheats. [PDF]

open access: yesExploration (Beijing)
Sustained nucleate boiling and Leidenfrost delay are critical for thermal and energy industries. Leveraging vapor buffer and reducing water‐hammer pressure, this study realizes the enhancement of nucleate boiling and postponement of Leidenfrost by rationally designing and developing hierarchical nano–micro structured surfaces. Besides, AI technology is
Wang JX   +7 more
europepmc   +2 more sources

Experimental Analysis of Flow Boiling in Horizontal Annulus—The Effect of Heat Flux on Bubble Size Distributions

open access: yesEnergies, 2022
Subcooled flow boiling was experimentally investigated in a horizontal annulus with a temperature-controlled boiling surface and transparent outer pipe facilitating visualization.
Boštjan Zajec   +2 more
doaj   +1 more source

A study on transition process to MEB by limiting boiling space

open access: yesJournal of Thermal Science and Technology, 2021
The study of microbubble emission boiling (MEB) is gaining popularity because it violently emits several microbubbles during subcooled pool boiling, for which the heat flux is greater than the critical heat flux (CHF).
Kendai KAWAKAMI   +3 more
doaj   +1 more source

Bubble Lift-off Size in Forced Convective Subcooled Boiling Flow [PDF]

open access: yes, 2005
Forced convective subcooled boiling flow experiments were conducted in a BWR-scaled vertical upward annular channel. Water was used as the testing fluid, and the tests were performed at atmospheric pressure.
Al-Hayes   +28 more
core   +2 more sources

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

Improvement of the MARS subcooled boiling model for a vertical upward flow

open access: yesNuclear Engineering and Technology, 2019
In the thermal-hydraulic system codes, such as MARS and RELAP5/MOD3, the Savannah River Laboratory (SRL) model has been adopted as a subcooled boiling model.
Tae-Wook Ha, Jae Jun Jeong, Byong-Jo Yun
doaj   +1 more source

Direct Numerical Simulation and Visualization of Subcooled Pool Boiling

open access: yesScience and Technology of Nuclear Installations, 2014
A direct numerical simulation of the boiling phenomena is one of the promising approaches in order to clarify their heat transfer characteristics and discuss the mechanism.
Tomoaki Kunugi, Yasuo Ose
doaj   +1 more source

Interface Tracking Simulation for Subcooled Flow Boiling Using VOSET Method

open access: yesFrontiers in Energy Research, 2021
This article presents a numerical simulation on subcooled flow boiling at a high-pressure condition. An interface tracking method, VOSET, was used to handle the moving interface, and conjugate heat transfer between the wall and the fluid was included in ...
Kong Ling   +6 more
doaj   +1 more source

Modeling and Simulation Analysis on Mixing Characteristics of Two-Phase Flow Around Spacer Grid

open access: yesFrontiers in Energy Research, 2022
The spacer grid has a significant impact on the thermal-hydraulic characteristics of the rod bundle channel, which directly determines the possibility of a boiling crisis.
Y. Xiao   +5 more
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

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