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Steady-state thermal-hydraulic analysis of SCWR assembly

LIU Xiaojing, CHENG Xu

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 475-478 doi: 10.1007/s11708-008-0093-3

Abstract: supercritical water-cooled reactor (SCWR), the only reactor with water as coolant, achieves a high thermalA thermal-hydraulic analysis of the SCWR assembly is performed in this paper using the modified COBRA-IVreduce the hot channel factor are investigated: decreasing the moderator mass flow and increasing the thermal

Keywords： cladding temperature     assembly     temperature     coolant     resistance    

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Development of a steady thermal-hydraulic analysis code for the China Advanced Research Reactor

TIAN Wenxi, QIU Suizheng, GUO Yun, SU Guanghui, JIA Dounan, LIU Tiancai, ZHANG Jianwei

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 189-194 doi: 10.1007/s00000-007-0024-8

Abstract: A multi-channel model steady-state thermal-hydraulic analysis code was developed for the China Advancedunsymmetrical cooling condition was also obtained, which is necessary for further study such as stress analysisand nuclear factor, calculation of the mean and hot channel was carried out and it is proved that all thermal-hydraulic

Keywords： detailed     calculation     unsymmetrical     temperature     channel    

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Influence evaluation of loading conditions during pressurized thermal shock transients based on thermal-hydraulics

Jinya KATSUYAMA, Shumpei UNO, Tadashi WATANABE, Yinsheng LI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 563-570 doi: 10.1007/s11465-018-0487-9

Abstract:

The thermal hydraulic (TH) behavior of coo-lant water is a key factor in the structural integrityassessments on reactor pressure vessels (RPVs) of pressurized water reactors (PWRs) under pressurized thermalmain components of both primary and secondary systems, and performed TH analyses by using a system analysisBased on the results of TH analysis with different operator action times, we also performed structuralanalyses for evaluating thermal-stress distributions in the RPV during PTS events as loading conditions

Keywords： structural integrity     reactor pressure vessel     pressurized thermal shock     thermal hydraulic analysis     pressurized    

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Analysis of the core thermal-hydraulic characteristics of in-hospital neutron irradiatormark 1 reactor

Chen Lixin,Zhao Zhumin,Jiang Xinbiao,Zhu Lei,Zhou Yongmao

Strategic Study of CAE 2012, Volume 14, Issue 8,   Pages 51-55

Abstract: It also has been verified that the model is reasonable and effective in IHNI-1's thermal hydraulicanalysis.Using the model, some thermal parameters of IHNI-1reactor are calculated.

Keywords： IHNI-1 reactor     thermal-hydraulic     subchannel     safety analysis    

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Thermal and hydraulic characteristics of a large-scaled parabolic trough solar field (PTSF) under cloud

Linrui MA, Zhifeng WANG, Ershu XU, Li XU

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 283-297 doi: 10.1007/s11708-019-0649-4

Abstract: parabolic trough solar field (PTSF) under cloud passages, a novel method which combines a closed-loop thermalhydraulic model (CLTHM) and cloud vector (CV) is developed.simulation, all essential parameters, such as the total flowrate, flow distribution, outlet temperature, thermalIn addition, the mechanism of thermal and hydraulic unbalance caused by cloud passages are explained

Keywords： parabolic trough solar field (PTSF)     thermal hydraulic model     cloud passages     transients    

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Thermal-hydraulic performance of novel louvered fin using flat tube cross-flow heat exchanger

DONG Junqi, CHEN Jiangping, CHEN Zhijiu

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 99-106 doi: 10.1007/s11708-008-0010-9

Abstract: The air side thermal performance data were analyzed using the effectiveness-NTU method.Finally, the area optimization factor was used to evaluate the thermal hydraulic performance of the louveredwith the decrease of the fin space and fin length, and the fin space has more obvious effect on the thermalhydraulic characteristics of the novel louvered fins.

Keywords： obvious effect     different     thermal hydraulic     constant tube-side     Colburn    

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CFD Simulation of thermal hydraulic characteristics in a typical upper plenum of RPV

Mingjun WANG, Lianfa WANG, Yingjie WANG, Wenxi TIAN, Jian DENG, Guanghui SU, Suizheng QIU

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 930-945 doi: 10.1007/s11708-021-0728-1

Abstract: A comparative computational fluid dynamics (CFD) study was conducted on the three different types of pressurized water reactor (PWR) upper plenum, named TYPE 1 (support columns (SCs) and control rod guide tubes (CRGTs) with two large windows), TYPE 2 (SCs and CRGTs without windows), and TYPE 3 (two parallel perforated barrel shells and CRGTs). First, three types of upper plenum geometry information were collected, simplified, and adopted into the BORA facility, which is a 1/5 scale system of the four-loop PWR reactor. Then, the geometry, including the upper half core, upper plenum region, and hot legs, was built using the platform. After that, an unsteady calculation to simulate the reactor balance operation at hot full power scenario was performed. Finally, the differences of flowrate distribution at the core outlet and temperature distribution and transverse velocity inside the hot legs with different upper plenum internals were compared. The results suggest that TYPE 1 upper plenum internals cause the largest flowrate difference at the core outlet while TYPE 3 leads to the most even distributed flowrate. The distribution and evolution pattern of the tangential velocity inside hot legs is highly dependent on the upper plenum internals. Two counter-rotating swirls exist inside the TYPE 1 hot leg and only one swirl revolving around the hog leg axis exist inside the TYPE 2 hot leg. For TYPE 3, two swirls like that of TYPE 1 rotating around the hot leg axis significantly increase the temperature homogenization speed. This research provides meaningful guidelines for the future optimization and design of advanced PWR upper plenum internal structures.

Keywords： pressurized water reactor (PWR)     upper plenum     internal structures     temperature distribution     computational fluid dynamics (CFD)    

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Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 377-382 doi: 10.1007/s11465-011-0226-y

Abstract:

Hydraulic thrust system is an important system in a shield tunneling machine.In this paper, a hydraulic thrust system is explained, and a corresponding simulation model is carried

Keywords： tunnel     hydraulic thrust system     pressure regulation     simulation    

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Isogeometric analysis of coupled thermo-elastodynamic problems under cyclic thermal shock

Asghar AMANI DASHLEJEH

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 397-405 doi: 10.1007/s11709-018-0473-7

Abstract: The isogeometric analysis (IGA) method was extended for the solution of the coupled thermo-elastodynamicthe proposed method was verified against a two-dimensional benchmark example subjected to constant thermalThen a two-dimensional half-space benchmark example under thermal shock was solved.Finally, cyclic thermal shock (CTS) loading was applied on the half-space problem.The results dedicated that IGA can be used as a suitable approach in the analysis of the general thermomechanical

Keywords： isogeometric analysis     coupled thermo-elastodynamic     dynamic analysis     generalized newmark     cyclic thermal    

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Flow, thermal, and vibration analysis using three dimensional finite element analysis for a flux reversal

B. VIDHYA,K. N. SRINIVAS

Frontiers in Energy 2016, Volume 10, Issue 4,   Pages 424-440 doi: 10.1007/s11708-016-0423-9

Abstract: ., computational fluid dynamic (CFD), thermal, and vibration.The results of CFD are mainly obtained to fine tune the thermal analysis.Thus, in this focus, a flow analysis assisted thermal analysis is presented to predict the steady stateThe vibration analysis is illustrated.Harmonic analysis such as sine sweep analysis to identify the range of speeds causing high vibrations

Keywords： flux reversal generator     air velocity     computation fluid dynamics     thermal analysis     vibration analysis     finiteelement analysis    

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Passive convergence-permeable reactive barrier (PC-PRB): An effective configuration to enhance hydraulic

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1591-y

Abstract:

● A novel PRB configuration based on passive convergent flow effect was proposed.

Keywords： convergence-permeable reactive barrier (PC-PRB)     Permeable reactive barrier configuration     Numerical simulation     Hydraulicperformance evaluation     Sensitivity analysis    

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Risk-based probabilistic thermal-stress analysis of concrete arch dams

Narjes SOLTANI, Mohammad ALEMBAGHERI, Mohammad Houshmand KHANEGHAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1007-1019 doi: 10.1007/s11709-019-0521-y

Abstract: The probabilistic risk of arch dam failure under thermal loading is studied.The deterministic thermal finite element analysis of the dam is combined with the structural reliabilitythe risk analysis context.The tensile overstressing failure mode is considered for the reliability analysis.The thermal loading includes ambient air and reservoir temperature variations.

Keywords： arch dams     probabilistic analysis     thermal stress     sensitivity     reliability    

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Thermal fluid-structure interaction and coupled thermal-stress analysis in a cable stayed bridge exposed

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 609-628 doi: 10.1007/s11709-018-0452-z

Abstract: In this paper, thermal fluid structure-interaction (TFSI) and coupled thermal-stress analysis are utilizedVorticity and thermal convection fields of three fire scenarios are simulated and analyzed.The results revealed that TFSI models and coupled thermal-stress models are significant in detecting

Keywords： fire scenario     transient heat transfer     TFSI model     coupled thermal-stress     XFEM    

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Thermal analysis of lubricated three-dimensional contact bodies considering interface roughness

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0672-8

Abstract: Surface roughness and thermal action are of remarkable importance in the lubrication performance of mechanicalIn this paper, a deterministic mixed thermal elastohydrodynamic lubrication model considering real 3Dsurface roughness and thermal effects is proposed.The influences of surface roughness and thermal effect on lubrication performance are revealed.The results show that the proposed model can be used as a powerful analysis tool for lubrication performance

Keywords： thermal elastohydrodynamic lubrication     surface roughness effect     thermal effect     temperature characteristics    

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Variation in humic and fulvic acids during thermal sludge treatment assessed by size fractionation, elementaryanalysis, and spectroscopic methods

Yuning YANG,Huan LI,Jinyi LI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 854-862 doi: 10.1007/s11783-014-0755-9

Abstract: Thermal pretreatment can be applied to sludge anaerobic digestion or dewatering.To analyze the variation in humic substances during thermal sludge treatment, sludge humic and fulvicacids were extracted before and after 30-min thermal treatment at 180°C, and then their contents, molecularshowed that the total contents of humic and fulvic acids in the sludge almost remained constant during thermalslight change, i.e. some oxygen functional groups disappeared and aromatic structures increased after thermal

Keywords： sludge     thermal treatment     humic acids     fulvic acids    

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Title Author Date Type Operation

Steady-state thermal-hydraulic analysis of SCWR assembly

LIU Xiaojing, CHENG Xu

Journal Article

Development of a steady thermal-hydraulic analysis code for the China Advanced Research Reactor

TIAN Wenxi, QIU Suizheng, GUO Yun, SU Guanghui, JIA Dounan, LIU Tiancai, ZHANG Jianwei

Journal Article

Influence evaluation of loading conditions during pressurized thermal shock transients based on thermal-hydraulics

Jinya KATSUYAMA, Shumpei UNO, Tadashi WATANABE, Yinsheng LI

Journal Article

Analysis of the core thermal-hydraulic characteristics of in-hospital neutron irradiatormark 1 reactor

Chen Lixin,Zhao Zhumin,Jiang Xinbiao,Zhu Lei,Zhou Yongmao

Journal Article

Thermal and hydraulic characteristics of a large-scaled parabolic trough solar field (PTSF) under cloud

Linrui MA, Zhifeng WANG, Ershu XU, Li XU

Journal Article

Thermal-hydraulic performance of novel louvered fin using flat tube cross-flow heat exchanger

DONG Junqi, CHEN Jiangping, CHEN Zhijiu

Journal Article

CFD Simulation of thermal hydraulic characteristics in a typical upper plenum of RPV

Mingjun WANG, Lianfa WANG, Yingjie WANG, Wenxi TIAN, Jian DENG, Guanghui SU, Suizheng QIU

Journal Article

Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Journal Article

Isogeometric analysis of coupled thermo-elastodynamic problems under cyclic thermal shock

Asghar AMANI DASHLEJEH

Journal Article

Flow, thermal, and vibration analysis using three dimensional finite element analysis for a flux reversal

B. VIDHYA,K. N. SRINIVAS

Journal Article

Passive convergence-permeable reactive barrier (PC-PRB): An effective configuration to enhance hydraulic

Journal Article

Risk-based probabilistic thermal-stress analysis of concrete arch dams

Narjes SOLTANI, Mohammad ALEMBAGHERI, Mohammad Houshmand KHANEGHAHI

Journal Article

Thermal fluid-structure interaction and coupled thermal-stress analysis in a cable stayed bridge exposed

Nazim Abdul NARIMAN

Journal Article

Thermal analysis of lubricated three-dimensional contact bodies considering interface roughness

Journal Article

Variation in humic and fulvic acids during thermal sludge treatment assessed by size fractionation, elementaryanalysis, and spectroscopic methods

Yuning YANG,Huan LI,Jinyi LI

Journal Article