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Linrui MA, Zhifeng WANG, Ershu XU, Li XU
《能源前沿(英文)》 2020年 第14卷 第2期 页码 283-297 doi: 10.1007/s11708-019-0649-4
关键词: parabolic trough solar field (PTSF) thermal hydraulic model cloud passages transients
Thermal-hydraulic performance of novel louvered fin using flat tube cross-flow heat exchanger
DONG Junqi, CHEN Jiangping, CHEN Zhijiu
《能源前沿(英文)》 2008年 第2卷 第1期 页码 99-106 doi: 10.1007/s11708-008-0010-9
关键词: obvious effect different thermal hydraulic constant tube-side Colburn
Steady-state thermal-hydraulic analysis of SCWR assembly
LIU Xiaojing, CHENG Xu
《能源前沿(英文)》 2008年 第2卷 第4期 页码 475-478 doi: 10.1007/s11708-008-0093-3
关键词: cladding temperature assembly temperature coolant resistance
Hydromechanical model for hydraulic fractures using XFEM
Bo HE
《结构与土木工程前沿(英文)》 2019年 第13卷 第1期 页码 240-249 doi: 10.1007/s11709-018-0490-6
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
《能源前沿(英文)》 2021年 第15卷 第4期 页码 930-945 doi: 10.1007/s11708-021-0728-1
关键词: pressurized water reactor (PWR) upper plenum internal structures temperature distribution computational fluid dynamics (CFD)
Jinya KATSUYAMA, Shumpei UNO, Tadashi WATANABE, Yinsheng LI
《机械工程前沿(英文)》 2018年 第13卷 第4期 页码 563-570 doi: 10.1007/s11465-018-0487-9
The thermal hydraulic (TH) behavior of coo-lant water is a key factor in the structural integrity assessments on reactor pressure vessels (RPVs) of pressurized water reactors (PWRs) under pressurized thermal shock (PTS) events, because the TH behavior may affect the loading conditions in the assessment. From the viewpoint of TH behavior, configuration of plant equipment and their dimensions, and operator action time considerably influence various parameters, such as the temperature and flow rate of coolant water and inner pressure. In this study, to investigate the influence of the operator action time on TH behavior during a PTS event, we developed an analysis model for a typical Japanese PWR plant, including the RPV and the main components of both primary and secondary systems, and performed TH analyses by using a system analysis code called RELAP5. We applied two different operator action times based on the Japanese and the United States (US) rules: Operators may act after 10 min (Japanese rules) and 30 min (the US rules) after the occurrence of PTS events. Based on the results of TH analysis with different operator action times, we also performed structural analyses for evaluating thermal-stress distributions in the RPV during PTS events as loading conditions in the structural integrity assessment. From the analysis results, it was clarified that differences in operator action times significantly affect TH behavior and loading conditions, as the Japanese rule may lead to lower stresses than that under the US rule because an earlier operator action caused lower pressure in the RPV.
关键词: structural integrity reactor pressure vessel pressurized thermal shock thermal hydraulic analysis pressurized water reactor weld residual stress
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
《能源前沿(英文)》 2007年 第1卷 第2期 页码 189-194 doi: 10.1007/s00000-007-0024-8
A modified zone model for estimating equivalent room thermal capacity
Hua CHEN, Xiaolin WANG
《能源前沿(英文)》 2013年 第7卷 第3期 页码 351-357 doi: 10.1007/s11708-013-0254-x
关键词: room model thermal network analysis transfer function heating ventilation and air conditioning (HVAC) system simulation
陈立新,赵柱民,江新标,朱磊,周永茂
《中国工程科学》 2012年 第14卷 第8期 页码 51-55
针对医院中子照射器I型堆(IHNI-1)的堆芯特点和运行工况,建立了适用于IHNI-1反应堆堆芯的热工分析模型,并对模型进行了验证。利用所建模型,计算了IHNI-1反应堆堆芯热工参数。最后分析了IHNI-1反应堆堆芯入口流量对堆芯出口温度的影响,同时给出了堆芯发生过冷沸腾时的功率计算结果。
Review of fluid and control technology of hydraulic wind turbines
Maolin CAI, Yixuan WANG, Zongxia JIAO, Yan SHI
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 312-320 doi: 10.1007/s11465-017-0433-2
This study examines the development of the fluid and control technology of hydraulic wind turbines. The current state of hydraulic wind turbines as a new technology is described, and its basic fluid model and typical control method are expounded by comparing various study results. Finally, the advantages of hydraulic wind turbines are enumerated. Hydraulic wind turbines are expected to become the main development direction of wind turbines.
关键词: wind turbine hydraulic system fluid model control technology
Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloom
《环境科学与工程前沿(英文)》 2022年 第16卷 第10期 doi: 10.1007/s11783-022-1564-1
● A new model for bloom control in open land scape water was constructed.
关键词: Reclaimed water landscape Algal bloom Nitrogen and phosphorus Hydraulic retention time Threshold Control model
Model-based nonlinear control of hydraulic servo systems: Challenges, developments and perspectives
Jianyong YAO
《机械工程前沿(英文)》 2018年 第13卷 第2期 页码 179-210 doi: 10.1007/s11465-018-0464-3
Hydraulic servo system plays a significant role in industries, and usually acts as a core point in control and power transmission. Although linear theory-based control methods have been well established, advanced controller design methods for hydraulic servo system to achieve high performance is still an unending pursuit along with the development of modern industry. Essential nonlinearity is a unique feature and makes model-based nonlinear control more attractive, due to benefit from prior knowledge of the servo valve controlled hydraulic system. In this paper, a discussion for challenges in model-based nonlinear control, latest developments and brief perspectives of hydraulic servo systems are presented: Modelling uncertainty in hydraulic system is a major challenge, which includes parametric uncertainty and time-varying disturbance; some specific requirements also arise ad hoc difficulties such as nonlinear friction during low velocity tracking, severe disturbance, periodic disturbance, etc.; to handle various challenges, nonlinear solutions including parameter adaptation, nonlinear robust control, state and disturbance observation, backstepping design and so on, are proposed and integrated, theoretical analysis and lots of applications reveal their powerful capability to solve pertinent problems; and at the end, some perspectives and associated research topics (measurement noise, constraints, inner valve dynamics, input nonlinearity, etc.) in nonlinear hydraulic servo control are briefly explored and discussed.
关键词: hydraulic servo system adaptive control robust control nonlinear friction disturbance compensation repetitive control noise alleviation constraint control
Qi WEI, Xiaohui ZHANG
《能源前沿(英文)》 2010年 第4卷 第4期 页码 507-516 doi: 10.1007/s11708-010-0017-x
关键词: thermal convection porous media viscoelastic fluid thermal nonequilibrium model
Zhifang ZHOU, Jinhao LIU, Huixiang ZENG, Mengmeng XU, Shihui LI
《工程管理前沿(英文)》 2022年 第9卷 第2期 页码 297-311 doi: 10.1007/s42524-020-0143-z
关键词: circular economy carbon performance comprehensive evaluation thermal power enterprise
Cohesive zone model-based analyses of localized leakage of segmentally lined tunnels
《结构与土木工程前沿(英文)》 2023年 第17卷 第4期 页码 503-521 doi: 10.1007/s11709-023-0927-4
关键词: segmentally lined tunnel localized leakage cohesive element hydraulic behavior numerical modeling
标题 作者 时间 类型 操作
Thermal and hydraulic characteristics of a large-scaled parabolic trough solar field (PTSF) under cloud
Linrui MA, Zhifeng WANG, Ershu XU, Li XU
期刊论文
Thermal-hydraulic performance of novel louvered fin using flat tube cross-flow heat exchanger
DONG Junqi, CHEN Jiangping, CHEN Zhijiu
期刊论文
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
期刊论文
Influence evaluation of loading conditions during pressurized thermal shock transients based on thermal-hydraulics
Jinya KATSUYAMA, Shumpei UNO, Tadashi WATANABE, Yinsheng LI
期刊论文
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
期刊论文
Review of fluid and control technology of hydraulic wind turbines
Maolin CAI, Yixuan WANG, Zongxia JIAO, Yan SHI
期刊论文
Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloom
期刊论文
Model-based nonlinear control of hydraulic servo systems: Challenges, developments and perspectives
Jianyong YAO
期刊论文
An autonomous system for thermal convection of viscoelastic fluids in a porous layer using a thermalnonequilibrium model
Qi WEI, Xiaohui ZHANG
期刊论文
Carbon performance evaluation model from the perspective of circular economy—The case of Chinese thermal
Zhifang ZHOU, Jinhao LIU, Huixiang ZENG, Mengmeng XU, Shihui LI
期刊论文