Air-water two-phase flow regime and transition criteria in vertical upward narrow rectangular channels

P Yuan, J Deng, L Pan, G Jiang, S Ding, D Wu… - Progress in Nuclear …, 2021 - Elsevier
Upward two-phase flow in two different vertical narrow gaps was investigated
experimentally. For better understanding the characteristics of air-water flow in rectangular …

Phase distribution characteristics of bubbly flow in 5× 5 vertical rod bundles with mixing vane spacer grids

Q Ren, L Pan, W Zhou, S Du, Z Li - Experimental Thermal and Fluid …, 2018 - Elsevier
In order to predict the thermal–hydraulic parameters in nuclear reactor accurately, it is
essential to reveal the phase distribution characteristics, the mechanisms of phase …

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

S Liu, L Liu, H Gu, K Wang - Annals of Nuclear Energy, 2022 - Elsevier
In this paper, the wire-mesh sensor (WMS) has been successfully introduced into a typical
pressurized water reactor (PWR) prototype 5× 5 rod bundle channel. Combined with the …

Two-group phase distribution characteristics for air-water flow in 5× 5 vertical rod bundle channel with mixing vane spacer grids

QY Ren, LM Pan, Z Pu, F Zhu, H He - … Journal of Heat and Mass Transfer, 2021 - Elsevier
The phase distribution in rod bundle channel was associated with the heat transfer
coefficient, flow resistance and critical heat flux, which was of great significance for the …

Numerical simulation of two-phase flow in 4x4 simulated bundle

A Ono, S Yamashita, T Suzuki… - Mechanical Engineering …, 2020 - jstage.jst.go.jp
An evaluation methodology of a thermal-hydraulics based on a mechanism in light water
reactors (LWRs) is needed from a viewpoint of the safety analysis during normal operation …

Drift-flux model of sub-channel in vertical rod bundles with spacer grids

Q Ren, L Pan, W Zhou, H Liu, T Ye - International Journal of Heat and Mass …, 2018 - Elsevier
Drift-flux model has been one of the most popular models predicting two phase flow
parameters in nuclear reactor and other industrial equipment since proposed. Most of …

Comparison of drift-flux models for void fraction prediction in sub-channel of vertical rod bundles

Q Ren, L Pan, W Zhou, T Ye… - International …, 2018 - asmedigitalcollection.asme.org
In order to simulate the transfer of mass, momentum and energy in the gas-liquid two-phase
flow system, tremendous work focused on the phenomenon, mechanisms and models for …

Experimental Study on the Transition Characteristics and Criterion From Wall-Peak to Core-Peak Phase Distribution in Vertical Rod Bundles

Q Ren, Z Pu, P Chen, L Pan, F Zhu, M Zheng… - Frontiers in Energy …, 2021 - frontiersin.org
Aiming at understanding the phase distribution characteristics and developing the transition
criterion from wall-peak to core-peak phase distribution in a rod bundle channel, air–water …

Experiment Study on the Liquid Film Behaviors of Annular Flow in the Rectangular Channel

Q Ren, Z Pu, Q He, H Liu, H He… - International …, 2024 - asmedigitalcollection.asme.org
Critical heat flux (CHF) is the most important parameter related to the safety performance of
heat exchanging equipment, whose triggering mechanisms are very complex and …

Phase distribution characteristics of cap bubbly flow in 5× 5 rod bundles with mixing vane spacer grids

Q Ren, L Pan, W Zhou, Z Pu, M Zheng… - The Proceedings of …, 2019 - jstage.jst.go.jp
To improve the understanding on the mechanisms of phase distribution and bubble
interaction for cap bubbly flow in rod bundles, the adiabatic upward cap bubbly flow has …