Results 11 to 20 of about 363 (182)
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 +7 more
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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 +5 more
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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 +3 more
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Effect of inlet subcooling on flow boiling in microchannels
Applied Thermal Engineering, 2020 Abstract The paper describes experimental work to assess the effect of inlet subcooling on the flow boiling characteristics of HFE-7200 in a multi-microchannel heat sink. The experiments were performed at a mass flux of 200 kg/m2 s and system pressure of 1 bar for inlet subcooling conditions of 5 K, 10 K and 20 K and wall heat flux between 25.9 and ...
Lee, VYS, Karayiannis, TG
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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
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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 +6 more
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CFD for Subcooled Flow Boiling: Analysis of DEBORA Tests [PDF]
The Journal of Computational Multiphase Flows, 2014 In this work we investigate the present capabilities of CFD for wall boiling. The computational model used combines the Euler/Euler two-phase flow description with heat flux partitioning. Very similar modelling was previously applied to boiling water under high pressure conditions relevant to nuclear power systems.
Krepper, E., Rzehak, R.
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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
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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
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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 +5 more
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