Experimental study of gas-liquid flow patterns and void fraction in prototype 5 × 5 rod bundle channel using wire-mesh sensor

Liu, Shuai; Liu, Li; Gu, Hanyang; Wang, Ke

doi:10.1016/j.anucene.2022.109022

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…Zhang et al (2018a) studied theoretically the flow patterns of two-phase vertically upward flow across horizontal tube bundles based on the Kanizawa flow regime criteria and Hibiki flow regime criteria. Liu et al (2022) conducted experimental studies on the gas-liquid flow patterns and spatial-temporal of each phase in the PWR prototype 5 × 5 rod bundle channel based on the void fraction data, evaluated the existing drift-flux correlations and proposed a new correlation for void fraction of prototype rod bundle channel with its reliability verified. Han et al (2021) studied five flow regimes (bubbly, finely dispersed bubbly, cap-bubbly, churn and annular flows) and their transitions in upward gasliquid flows in vertical rod bundle flow channels.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical entropy analysis for flow pattern of steam-liquid two phase flow in a rod bundle

Zhang

Hou

et al. 2023

Front. Energy Res.

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Flow pattern is very key parameter in the study of flow characteristics and heat transfer characteristics of two-phase flow. In this Paper, two-phase boiling experiment in a 3×3 rod bundle was conducted within the following parameter range: 0≤G≤600kg/(m2⋅s),0.1≤p≤0.12MPa,10≤ΔTsub≤30℃. We first observed the four typical flow patterns, including bubble flow, bubble-churn flow, churn flow, annular flow, and the physical characteristics were studied and the corresponding differential pressure fluctuation signals measured for the four typical flow patterns. The dynamic characteristic of typical flow pattern was investigated by the of hierarchical entropy algorithm. Then the hierarchical entropy value of different flow patterns was calculated. The results indicate that the hierarchical entropy has a better ability to resist noise, and can reveal dynamics complexity of different flow pattern in rod bundle.

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Section: Introductionmentioning

confidence: 99%