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Experimental study of critical flow of water at supercritical pressure

Yuzhou CHEN, Chunsheng YANG, Shuming ZHANG, Minfu ZHAO, Kaiwen DU, Xu CHENG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 175-180 doi: 10.1007/s11708-009-0029-6

Abstract: Experimental studies of the critical flow of water were conducted under steady-state conditions with a nozzle 1.41 mm in diameter and 4.35 mm in length, covering the inlet pressure range of 22.1-26.8 MPa and inlet temperature range of 38-474°C. The parametric trend of the flow rate was investigated, and the experimental data were compared with the predictions of the homogeneous equilibrium model, the Bernoulli correlation, and the models used in the reactor safety analysis code RELAP5/MOD3.3. It is concluded that in the near or beyond pseudo-critical region, thermal-dynamic equilibrium is dominant, and at a lower temperature, choking does not occur. The onset of the choking condition is not predicted reasonably by the RELAP5 code.

Keywords： critical flow     supercritical water-cooled reactor(SCWR)     reactor safety     loss of coolant accident(LOCA)    

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An old issue and a new challenge for nuclear reactor safety

F. D’AURIA

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 854-859 doi: 10.1007/s11708-021-0729-0

Abstract: Nuclear reactor safety (NRS) and the branch accident analysis (AA) constitute proven technologies: theseLarge break loss of coolant accident (LBLOCA) has been, so far, the orienting scenario within AA andElectronic and informatics systems were in extensive use and their impact in case of accident becomes

Keywords： large break loss of coolant accident (LBLOCA)     nuclear reactor safety (NRS)     licensing perspectives     basis    

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Oxidation performance of graphite material in reactors

LUO Xiaowei, YU Xinli, YU Suyuan

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 471-474 doi: 10.1007/s11708-008-0074-6

Abstract: graphite oxidation influences the safety and operation of the reactor because of the impurities in the coolantand/or the accident conditions, such as water ingress and air ingress.

Keywords： ingress     accident     oxidation     coolant     moderator    

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Latest research progress for LBE coolant reactor of China initiative accelerator driven system project

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 810-831 doi: 10.1007/s11708-021-0760-1

Abstract: and the comprehensive thermal-hydraulic and material test facilities for LBE (lead bismuth eutectic) coolantPhysical and thermal experiments and software development for LBE coolant were conducted simultaneously

Keywords： LBE (lead bismuth eutectic) coolant reactor     China initiative Accelerator Driven System (CiADS) project    

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Liquid metal as energy transportation medium or coolant under harsh environment with temperature below

Yunxia GAO, Lei WANG, Haiyan LI, Jing LIU

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 49-61 doi: 10.1007/s11708-013-0285-3

Abstract: or its alloys could significantly reduce the electronics temperature compared with the conventional coolantFinally, some main factors for optimization of low temperature coolant were summarized.

Keywords： liquid metal     cryogenics     low melting point     thermal management     aircraft     liquid cooling     space exploration    

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Analysis of a 1 kW organic Rankine cycle using a scroll expander for engine coolant and exhaust heat

Yiji LU, Anthony Paul ROSKILLY, Long JIANG, Longfei CHEN, Xiaoli YU

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 527-534 doi: 10.1007/s11708-017-0516-0

Abstract: This paper presented the study of engine coolant and exhaust heat recovery using organic Rankine cyclesystem mainly focusing on the utilization of exhaust energy, this work proposed to fully use the engine coolantevaluation results suggest that under the engine rated condition, the solution to fully recover the engine coolant

Keywords： organic Rankine cycle     scroll expander     coolant and exhaust recovery     internal combustion engine    

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Panoramic variation analysis of a family with neurodevelopmental disorders caused by biallelic loss-of-function

Frontiers of Medicine doi: 10.1007/s11684-023-1006-x

Abstract: Notably, the biallelic loss-of-function variants of TMEM141 were responsible for syndromic ID.

Keywords： neurodevelopmental disorder     autosomal recessive intellectual disability     consanguinity     spastic paraplegia     hearing loss    

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Genetic Study Identifies CBLN4 as a Novel Susceptibility Gene for Accident Proneness

Shu-lin Zhang,Hui-qing Jin,Yang Song,Wan-sheng Yu,Liang-dan Sun

Frontiers of Engineering Management 2016, Volume 3, Issue 1,   Pages 30-38 doi: 10.15302/J-FEM-2016008

Abstract: The accident-prone driver who has the stable physiological, psychological, and behavioral characteristicsThe internal link between the individual characteristics and the accident proneness has been a difficultpoint in the accident prevention research.The authors selected accident-prone drivers as cases and safe drivers as controls (case-control groupIt is suggested that the accident-prone drivers may have the idiosyncrasy of susceptibility.

Keywords： accident proneness     genome-wide association study (GWAS)     dopamine (DA)     ACTH     susceptibility gene     trafficaccident epidemiology     accident prevention     traffic safety     three-dimensional model    

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Power fluctuation and power loss of wind turbines due to wind shear and tower shadow

Binrong WEN, Sha WEI, Kexiang WEI, Wenxian YANG, Zhike PENG, Fulei CHU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 321-332 doi: 10.1007/s11465-017-0434-1

Abstract: the effects of wind shear and tower shadow on power output in terms of power fluctuation and power lossPower fluctuation and power loss due to wind shear and tower shadow are analyzed by performing theoreticalUnder steady wind conditions, power loss can be divided into wind farm loss and rotor loss.Wind farm loss is constant at 3α(3α−1)R2/(8By contrast, rotor loss is strongly influenced by the wind turbine control strategies and wind speed.

Keywords： wind turbine     wind shear     tower shadow     power fluctuation     power loss    

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Turnover and loss of nitrogenous compounds during composting of food wastes

YANG Yanmei, ZHANG Xiangfeng, YANG Zhifeng, XI Beidou, LIU Hongliang

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 251-256 doi: 10.1007/s11783-008-0042-8

Abstract: This study aimed to investigate the solid-phase nitrogen, water-soluble nitrogen, nitrogen loss togethercontent of the water-soluble nitrogen compounds in the compost greatly increased, the total nitrogen losssuggested that the control at the middle and late composting of thermophilic stage is the key to nitrogen loss
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Winner determination problem with loss-averse buyers in reverse auctions

Xiaohu QIAN, Min HUANG, Yangyang YU, Xingwei WANG

Frontiers of Engineering Management 2017, Volume 4, Issue 2,   Pages 212-220 doi: 10.15302/J-FEM-2017019

Abstract: novel winner determination problem in a multiple-object reverse auction in which the buyer involves loss-averseIn addition, the proposed model can effectively characterize the buyer’s loss-averse behavior.

Keywords： reverse auction     loss aversion     winner determination     improved ant colony algorithm    

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Study on Inherent Safety-based Industrial Accident Risk Management Method

Wu Zongzhi

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 46-49

Abstract:  procedural safeguard, layers of protection and the standards of function safety to reduce the accident

Keywords： inherent safety     risk management     accident prevention     safety design    

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A novel energy loss model and optimization design of the coin chute flection curve

Qinghua LIANG, Jinqiu MO, Weizhong GUO

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 38-46 doi: 10.1007/s11465-012-0311-x

Abstract:

In this paper, we propose a novel design model based on the energy loss of the coin (ELM model) toTwo different kinds of energy loss models are analyzed according to dynamic characteristics of the coinpoints and end points derivatives as inputs, and the curve model is governed and affected by energy lossequations, allowing to minimize the total energy loss before the coin arrives at the detecting position, thus to reduce the energy loss and collisions between the coin and the flection, thus to improve the

Keywords： flection curve     B-spline     energy loss model (ELM model)     optimization design    

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Total phosphorus accident pollution and emergency response study based on geographic information system

Aifeng Zhai, Xiaowen Ding, Lin Liu, Quan Zhu, Guohe Huang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1223-3

Abstract: A new algorithm of two-dimensional water quantity and the quality model was built. The migration and diffusion of TP was simulated. The emergency measures for sudden water pollution accidents was proposed. In recent years, sudden water pollution accidents in China’s rivers have become more frequent, resulting in considerable effects on environmental safety. Therefore, it is necessary to simulate and predict pollution accidents. Simulation and prediction provide strong support for emergency disposal and disaster reduction. This paper describes a new two-dimensional water quantity and the quality model that incorporates a digital elevation model into the geographic information system. The model is used to simulate sudden water pollution accidents in the main stream of the Yangtze River and Jialing River in the Chongqing section of the Three Gorges Reservoir area. The sectional velocity distribution and concentration change of total phosphorus are then analyzed under four hydrological situations. The results show that the proposed model accurately simulates and predicts the concentration change and migration process of total phosphorus under sudden water pollution accidents. The speed of migration and diffusion of pollutants is found to be greatest in the flood season, followed by the water storage period, drawdown season, and dry season, in that order. The selection of an appropriate water scheduling scheme can reduce the peak concentration of river pollutants. This study enables the impact of pollutants on the ecological environment of river water to be alleviated, and provides a scientific basis for the emergency response to sudden water pollution accidents in the Three Gorges Reservoir area.

Keywords： Sudden water pollution accident     Total phosphorus     Predictive model     Contaminant simulation     Water scheduling    

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The Hypothesis of Safety Theory

Yu Haiyong,Li Fang

Strategic Study of CAE 2006, Volume 8, Issue 10,   Pages 85-88

Abstract: Three basic types of accidents are proposed in this paper, that is, inevitable, random and man-fault accident

Keywords： safety theory     accident type     mathematical equation     accident prevention    

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Title Author Date Type Operation

Experimental study of critical flow of water at supercritical pressure

Yuzhou CHEN, Chunsheng YANG, Shuming ZHANG, Minfu ZHAO, Kaiwen DU, Xu CHENG

Journal Article

An old issue and a new challenge for nuclear reactor safety

F. D’AURIA

Journal Article

Oxidation performance of graphite material in reactors

LUO Xiaowei, YU Xinli, YU Suyuan

Journal Article

Latest research progress for LBE coolant reactor of China initiative accelerator driven system project

Journal Article

Liquid metal as energy transportation medium or coolant under harsh environment with temperature below

Yunxia GAO, Lei WANG, Haiyan LI, Jing LIU

Journal Article

Analysis of a 1 kW organic Rankine cycle using a scroll expander for engine coolant and exhaust heat

Yiji LU, Anthony Paul ROSKILLY, Long JIANG, Longfei CHEN, Xiaoli YU

Journal Article

Panoramic variation analysis of a family with neurodevelopmental disorders caused by biallelic loss-of-function

Journal Article

Genetic Study Identifies CBLN4 as a Novel Susceptibility Gene for Accident Proneness

Shu-lin Zhang,Hui-qing Jin,Yang Song,Wan-sheng Yu,Liang-dan Sun

Journal Article

Power fluctuation and power loss of wind turbines due to wind shear and tower shadow

Binrong WEN, Sha WEI, Kexiang WEI, Wenxian YANG, Zhike PENG, Fulei CHU

Journal Article

Turnover and loss of nitrogenous compounds during composting of food wastes

YANG Yanmei, ZHANG Xiangfeng, YANG Zhifeng, XI Beidou, LIU Hongliang

Journal Article

Winner determination problem with loss-averse buyers in reverse auctions

Xiaohu QIAN, Min HUANG, Yangyang YU, Xingwei WANG

Journal Article

Study on Inherent Safety-based Industrial Accident Risk Management Method

Wu Zongzhi

Journal Article

A novel energy loss model and optimization design of the coin chute flection curve

Qinghua LIANG, Jinqiu MO, Weizhong GUO

Journal Article

Total phosphorus accident pollution and emergency response study based on geographic information system

Aifeng Zhai, Xiaowen Ding, Lin Liu, Quan Zhu, Guohe Huang

Journal Article

The Hypothesis of Safety Theory

Yu Haiyong,Li Fang

Journal Article