Results 21 to 30 of about 354 (185)

Investigation on the Subcooled Boiling in Vertical Pipe With Uncertainties From Boundary Conditions by Using FLUENT

open access: yesFrontiers in Energy Research, 2018
Subcooled boiling flow taking place in the reactor system plays a critical role in the safety of nuclear power plants. It has been studied by experiments and system codes in the past decades.
Xiang Zhang   +3 more
doaj   +1 more source

Derivation and Uncertainty Quantification of a Data-Driven Subcooled Boiling Model

open access: yesEnergies, 2020
Subcooled flow boiling occurs in many industrial applications where enormous heat transfer is needed. Boiling is a complex physical process that involves phase change, two-phase flow, and interactions between heated surfaces and fluids.
Jerol Soibam   +4 more
doaj   +1 more source

Flow Heat Transfer Characteristic in Rod Bundle Channel in Natural Circulation System for Rolling Condition

open access: yesYuanzineng kexue jishu, 2022
There is mixing and second flow in sub-channels of the rod bundle. The flow and heat transfer characteristics in rod bundle are more complex than those in rectangular channel and round pipes.
BI Jingliang;XIE Feng;HUANG Yanping;XU Jianjun;YUAN Dewen;ZAN Yuanfeng
doaj  

CFD Investigations of Subcooled Flow Boiling in a Random Pebble Bed

open access: yesChemical Engineering Transactions, 2017
A new concept of nuclear reactors, Pebble Bed Water Reactor (PBWR), has attracted wide attention due to the advantages in the inherent safety performance, high conversion efficiency and low power density design.
S. Bu   +5 more
doaj   +1 more source

Comparison of Intergroup Mass Transfer Coefficient Correlations in Two-Group IATE for Subcooled Boiling Flow

open access: yesFrontiers in Energy Research, 2022
The interfacial area concentration (IAC) is of vital importance in determining the interfacial transfer terms of mass, momentum, and energy between phases in the two-fluid model.
Longxiang Zhu   +4 more
doaj   +1 more source

Flow boiling heat transfer characteristics of two-phase flow in microchannels

open access: yesAIP Advances, 2022
A set of experimental platforms with widths of 0.5, 1.0, 1.5, and 2.0 mm was established to explore the mechanism of flow boiling bubble dynamics in microchannels, focusing on heat transfer characteristics, pressure loss, and two-phase flow pattern ...
Lei Guo, Shusheng Zhang, Jing Hu
doaj   +1 more source

Numerical Simulation Research of Bubble Characteristics and Bubble Departure Diameter in Subcooled Flow Boiling

open access: yesMathematics, 2022
Three-dimensional subcooled flow boiling of R134a in a horizontal tube was simulated by a VOF (volume of fluid) model combined with the level set method.
Jinfeng Wang   +5 more
doaj   +1 more source

Simulación de un micro-evaporador para un micro-tubo horizontal circular de 1-mm

open access: yesRevista de Ciencias Tecnológicas, 2023
Flow boiling into micro-channels is a good option of cooling solutions for electronic devices. Numerical simulations allow designing correctly before manufacturing.
César Manuel Valencia Castillo   +4 more
doaj   +1 more source

Gravity independent subcooled flow boiling heat transfer regime

open access: yesExperimental Thermal and Fluid Science, 2004
Abstract Using an existing model for vapor bubble detachment, a subcooled flow boiling regime was identified where vapor bubble dynamics are independent of the gravitational field. The Jakob number and a dimensionless flow parameter were used to identify the boundaries of this regime.
Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL 32611-0510, USA ( host institution )   +2 more
openaire   +2 more sources

Accuracy Analysis of Bubble-layer-based Model Applied on Rectangular Channel

open access: yesYuanzineng kexue jishu
Subcooled flow boiling contains complex bubble behaviors and interactions. Accurate prediction and analysis of the subcooled flow boiling are of great significance for the safe operation and economy of the nuclear reactors.
HE Wen, ZHAO Chenru, HAN Jinyu, BO Hanliang
doaj   +1 more source

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