Results 11 to 20 of about 7,640 (226)

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

International Journal of Heat and Mass Transfer, 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, Auton, Bartel, Chen, Chen, Collier, Davis, Ishii, Kandlikar, Klausner, Kocamustafaogullari, Kocamustafaogullari, Levy, Mamoru Ishii, Mei, Mei, Michitsugu Mori, Rogers, Rong Situ, Saffman, Sateesh, Situ, Situ, Situ, Staub, Takashi Hibiki, Zeng, Zuber, Zuber   +28 more
core   +4 more sources

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

Exploration (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, Wang H, Salmean C, Cui B, Zhong ML, Mao Y, Li JX, Yao S.   +7 more
europepmc   +2 more sources

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

Frontiers 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, T. C. Duan, Quan-Yao Ren, Xiao-Yu Zheng, Meiyin Zheng, Rui He   +5 more
doaj   +1 more source

Experimental investigation on the evolution of bubble behavior in subcooled flow boiling in narrow rectangular channel based on bubble tracking algorithm

Frontiers in Energy Research, 2023
The nucleate subcooled boiling is an efficient heat transfer form and plays an important role in many cooling applications. The size and distribution of bubbles in subcooled boiling have considerable influence on boiling heat transfer.
Kezhong Lv, Linglan Zhou, Yong Chen, Hong Gao   +3 more
doaj   +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

Nuclear 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

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

Case 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, Xinyuan Qian, Xuebin Peng, Yuntao Song, Wei Song, Fangzhou Song, Ping Liu   +6 more
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)

Nihon 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

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

Mathematics, 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, Jinfeng Wang, Jing Xie, Bingjun Wang, Fei Wang, Meng Deng   +5 more
doaj   +1 more source

Experimental Study of Subcooled Flow Boiling on Heterogeneous Wetting Surface

Zhileng 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  

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

Journal 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