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Featured researches published by Songbai Cheng.


Journal of Nuclear Engineering and Radiation Science | 2018

Experimental and Empirical-Model Studies on Flow-Regime Characteristics in Debris Bed Formation Behavior

Songbai Cheng; Ting Zhang; Jinjiang Cui; Pengfeng Gong; Yujia Qian

Studies on debris bed formation behavior are important for improved evaluation of core relocation and debris bed coolability that might be encountered in a Core Disruptive Accident (CDA) of Sodium-cooled Fast Reactors (SFR). Motivated to clarify the flow-regime characteristics underlying this behavior, both experimental investigations and empirical-model development are being performed at the Sun Yat-sen University in China. As for the experimental study, several series of simulated experiments are being conducted by discharging various solid particles into water pools. To obtain a comprehensive understanding, a variety of parameters, including particle size (0.125~8mm), particle density (glass, aluminum, alumina, zirconia, steel, copper and lead), particle shape (spherical and non-spherical), water depth (0~80cm) along with the particle release pipe diameter (10~40mm) were varied. It is found that due to the different interaction mechanisms between solid particles and water pool, four kinds of flow regimes, termed respectively as the particle-suspension regime, the pool-convection dominant regime, the transitional regime and the particle-inertia dominant regime, were identifiable. As for empirical-model development, aside from a base model which is restricted to predictions of spherical particles, in this paper considerations on how to cover more realistic conditions (esp. debris of non-spherical shapes) are also discussed. It is shown that by coupling the base model with an extension scheme, respectable agreement between experiments and model predictions for regime transition can be achieved for both spherical and non-spherical particles given our current range of conditions.


Annals of Nuclear Energy | 2017

CFD analysis of flow field in a 5×5 rod bundle with multi-grid

Songbai Cheng; Huandong Chen; Xiaoying Zhang


Annals of Nuclear Energy | 2018

A two-dimensional experimental investigation on the sloshing behavior in a water pool

Songbai Cheng; Shuo Li; Kejia Li; Nan Zhang; Ting Zhang


Nuclear Engineering and Technology | 2017

Investigation of flow regime in debris bed formation behavior with nonspherical particles

Songbai Cheng; Pengfeng Gong; Shixian Wang; Jinjiang Cui; Yujia Qian; Ting Zhang; Guangyu Jiang


Annals of Nuclear Energy | 2017

Development and analysis of a regime map for predicting debris bed formation behavior

Songbai Cheng; Shixian Wang; Guangyu Jiang; Jiahuan Yu; Yujia Qian; Pengfeng Gong; Jinjiang Cui


2017 25th International Conference on Nuclear Engineering | 2017

Knowledge From Recent Investigation on Flow Regime Characteristics in Debris Bed Formation Behavior Related to SFR Severe Accident Analyses

Songbai Cheng; Ting Zhang; Shixian Wang; Guangyu Jiang; Shaopeng Lin; Jiahuan Yu; Li Wang


Nuclear Engineering and Technology | 2018

An experimental study on pool sloshing behavior with solid particles

Songbai Cheng; Shuo Li; Kejia Li; Ting Zhang


Annals of Nuclear Energy | 2018

Prediction of flow-regime characteristics in pool sloshing behavior with solid particles

Songbai Cheng; Shuo Li; Kejia Li; Ting Zhang; Nan Zhang; Xu'an Li; Feng Liang


Annals of Nuclear Energy | 2018

A new experimental investigation on local fuel-coolant interaction in a molten pool

Ting Zhang; Songbai Cheng; Ting Zhu; Chuiyi Meng; Xu'an Li


Annals of Nuclear Energy | 2018

An experimental investigation on flow-regime characteristics in debris bed formation behavior using gas-injection

Songbai Cheng; Jinjiang Cui; Yujia Qian; Pengfeng Gong; Ting Zhang; Shixian Wang; Guangyu Jiang

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Ting Zhang

Sun Yat-sen University

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Yujia Qian

Sun Yat-sen University

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Kejia Li

Sun Yat-sen University

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Shuo Li

Sun Yat-sen University

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Jiahuan Yu

Sun Yat-sen University

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Nan Zhang

Sun Yat-sen University

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