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NUMERICAL SIMULATION OF ARTIFICIAL VENTILATED CAVITY

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Journal of Hydrodynamics 2006年第3期18卷 273-279页

作者： jia Li-ping wang cong wei ying-jie wang Hai-bin zhang jia-zhong yu kai-ping School of Astronautics Harbin Instituteof Technology Harbin 150001 China

In order to determine artificial ventilated cavity shape and provide design reference for engineering applications, the shape of ventilated cavity and the drag of underwater body have been numerically simulated with commercial code in this work. Empirical formulas between ventilated cavity shape and cavitation number are obtained under the conditions of zero incidence and similarity shapes of ventilated cavity and vapor cavity have been validated under the same cavitation number. In addition, the relations between change of cavitator incidence and cavity unsymmetry and the relations of between drag and cavity shape have been primarily analysed. Furthermore, the numerical results fit well with the experimental results.

关键词： ventilated cavity numerical simulation,cavity shape

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao jianshe Cao Antoine Chance xuejun Chang yue Chang Zhe Chang Xinyuan Chang wei Chao Auttakit Chatrabhuti Yimin Che yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-yuan Chen kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen ying Chen yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu kaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

基于白光中子源的^(197)Au中子辐射俘获截面测量及共振参数分析

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物理学报 2024年第7期73卷 104-113页

作者：罗淏天张奇玮栾广源王晓宇邹翀任杰阮锡超贺国珠鲍杰孙琪黄翰雄王朝辉吴鸿毅顾旻皓余滔解立坤陈永浩安琪白怀勇鲍煜曹平陈昊磊陈琪萍陈裕凯陈朕崔增琪樊瑞睿封常青高可庆韩长材韩子杰何泳成洪杨黄蔚玲黄锡汝季筱璐吉旭阳蒋伟江浩雨姜智杰敬罕涛康玲康明涛李波李超李嘉雯李论李强李晓李样刘荣刘树彬刘星言穆奇丽宁常军齐斌斌任智洲宋英鹏宋朝晖孙虹孙康孙晓阳孙志嘉谭志新唐洪庆唐靖宇唐新懿田斌斌王丽娇王鹏程王琦王涛峰文杰温中伟吴青彪吴晓光吴煊羊奕伟易晗于莉于永积张国辉张林浩张显鹏张玉亮张志永赵豫斌周路平周祖英朱丹阳朱科军朱鹏朱兴华中国原子能科学研究院核数据重点实验室北京102413 中国科学院高能物理研究所北京100049 散裂中子源科学中心东莞523803 核探测与核电子学国家重点实验室北京100049 中国科学技术大学近代物理系核探测与核电子学国家重点实验室合肥230026 北京大学物理学院核物理与核技术国家重点实验室北京100871 中国工程物理研究院核物理与化学研究所绵阳621900 西北核技术研究院西安710024 中国科学院大学北京100049 中国科学技术大学工程与应用物理系合肥230026 北京航空航天大学物理学院北京100083 华能山东石岛湾核电有限公司荣成264312

中子辐射俘获反应在反应堆运行、核装置设计及核天体物理研究中起重要的作用.4πBaF_(2)探测装置有着高时间分辨能力、低中子灵敏度、高探测效率等优点,适合开展中子辐射俘获反应截面数据的测量.中国原子能科学研究院核数据重点实验室... 详细信息

中子辐射俘获反应在反应堆运行、核装置设计及核天体物理研究中起重要的作用.4πBaF_(2)探测装置有着高时间分辨能力、低中子灵敏度、高探测效率等优点,适合开展中子辐射俘获反应截面数据的测量.中国原子能科学研究院核数据重点实验室建立了伽马全吸收装置(Gamma total absorption facility,GTAF),该装置用28块六棱BaF_(2)晶体和12块五棱BaF_(2)晶体构成了外径25 cm,内径10 cm的球壳,覆盖了95.2%的立体角.利用GTAF在中国散裂中子源Back-n束线上,测量了197Au(n,γ)的反应截面数据.测量数据通过能量筛选、PSD方法、晶体多重性筛选进行了初步本底扣除,随后结合对^(nat)C及空样品的测量数据对本底进行了分析及扣除,获得了197Au俘获反应的产额,利用SAMMY程序拟合得到了^(197)Au在1—100 e V的共振能量、中子共振宽度和伽马共振宽度参数.实验测量结果与ENDF/B-VIII.0数据库符合良好,其共振参数存在一定差异,分析原因可能与GTAF能量分辨率、Back-n的中子能谱测量精度、以及实验本底扣除方法相关,这也是下一步工作的重点.

关键词：中子辐射俘获截面共振参数白光中子源伽马全吸收装置

维普期刊数据库博看期刊

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通气超空泡形态及其稳定性实验研究

哈尔滨工程大学学报 2007年第4期28卷 381-387页

作者：张学伟张嘉钟王聪魏英杰于开平隗喜斌哈尔滨工业大学航天学院黑龙江哈尔滨150001

通过在水洞中开展的系列实验对通气超空泡形态及其稳定性进行了研究.研究表明,重力对通气过程和关气过程所形成的通气超空泡影响不同,但超空泡轴线变形量都以非线性方式增长.当重力影响较小时,在相同空泡数下,通气超空泡与自然超空泡在... 详细信息

通过在水洞中开展的系列实验对通气超空泡形态及其稳定性进行了研究.研究表明,重力对通气过程和关气过程所形成的通气超空泡影响不同,但超空泡轴线变形量都以非线性方式增长.当重力影响较小时,在相同空泡数下,通气超空泡与自然超空泡在形状和尺度上基本相似,并且两者的长细比都随着空泡数的增大而减小.通气超空泡形态不稳定主要有3种表现形式:气泡振荡、空泡界面波动以及空泡界面扭动,它们特点各异,对空泡产生的影响也不同.

关键词：通气超空泡水洞实验重力稳定性

Lijiang 2.4-meter Telescope and its instruments

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Research in Astronomy and Astrophysics 2019年第10期19卷 95-108页

作者： Chuan-Jun wang Jin-Ming Bai yu-Feng Fan Ji-Rong Mao Liang Chang yu-Xin Xin Ju-jia zhang Bao-Li Lun jian-Guo wang Xi-Liang zhang Mei ying kai-Xing Lu Xiao-Li wang kai-Fan Ji Ding-Rong Xiong Xiao-Guang yu Xu Ding kai Ye Li-Feng Xing wei-Min Yi Liang Xu Xiang-Ming Zheng yuan-jie Feng Shou-Sheng He xue-Li wang zhong Liu Dong Chen Jun Xu Song-Nian Qin Rui-Long zhang Hui-Song Tan Zhi Li Ke Lou jian Li wei-wei Liu yunnan Observatories Chinese Academy of SciencesKunming 650216China Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of Sciences Kunming 650216 China Center for Astronomical Mega-Science Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China Astrophysics Center of Guangzhou University Guangzhou 510006China

The Lijiang 2.4-meter Telescope(LJT), the largest common-purpose optical telescope in China,has been available to the worldwide astronomical community since 2008. It is located at the Gaomeigu site,Lijiang Observatory(LJO), in the southwest of China. The site has very good observational *** its 10-year operation, several instruments have been equipped on the LJT. Astronomers can perform both photometric and spectral observations. The main scientific goals of LJT include recording photometric and spectral evolution of supernovae, reverberation mapping of active galactic nuclei, investigating the physical properties of binary stars and near-earth objects(comets and asteroids), and identification of exoplanets and all kinds of transients. Until now, the masses of 41 high accretion rate black holes have been measured, and more than 168 supernovae have been identified by the LJT. More than 190 papers related to the LJT have been published. In this paper, the general observation conditions of the Gaomeigu site is introduced at first. Then, the structure of the LJT is described in detail, including the optical, mechanical, motion and control system. The specification of all the instruments and some detailed parameters of the YFOSC is also presented. Finally, some important scientific results and future expectations are summarized.

关键词： telescopes Lijiang 2.4-m Telescope-instrumentation photometers-instrumentation spectrographs

回注射流及其对通气超空泡形态影响的研究(英文)

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船舶力学 2010年第6期14卷 571-576页

作者：张嘉钟赵静魏英杰王聪于开平哈尔滨工业大学哈尔滨150001

通过水洞实验对回注射流现象及其对通气超空泡形态的影响进行了研究。实验水洞为封闭的连续通气水洞。通过高速摄像机记录回注射流及通气超空泡的动态变化过程。摄像机的拍摄速率为每秒1000帧。文中在实验的基础上分析了超空泡形态变化... 详细信息

通过水洞实验对回注射流现象及其对通气超空泡形态的影响进行了研究。实验水洞为封闭的连续通气水洞。通过高速摄像机记录回注射流及通气超空泡的动态变化过程。摄像机的拍摄速率为每秒1000帧。文中在实验的基础上分析了超空泡形态变化趋势与回注射流之间的关系并讨论了回注射流的形成机理。此外,还分析了通气系数对回注射流的影响。

关键词：回注射流超空泡水洞实验

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空化器参数对通气超空泡形态影响的实验研究

工程力学 2007年第3期24卷 159-164页

作者：贾力平王聪于开平魏英杰王海斌张嘉钟哈尔滨工业大学航天学院哈尔滨150001

为了在低速下获取形态可控有效减阻的通气超空泡,利用中速可持续通气空泡水洞开展了空化器参数对通气超空泡形态影响的研究。研究结果表明:空化器直径与通气超空泡的形态密切相关,在相同流场参数条件下,较大直径的空化器易于空化且在较... 详细信息

为了在低速下获取形态可控有效减阻的通气超空泡,利用中速可持续通气空泡水洞开展了空化器参数对通气超空泡形态影响的研究。研究结果表明:空化器直径与通气超空泡的形态密切相关,在相同流场参数条件下,较大直径的空化器易于空化且在较低的通气率下即可形成较大的通气超空泡;通气超空泡的优良率与空化器直径密切相关;不易选取空化器直径与模型后体直径比值Dn/D<0.263的空化器;空化器线形同样也是一个重要的参数,例如,在相同流场参数条件下,平头倒角形空化器比圆锥形空化器形成的超空泡尺寸大,对于圆锥形空化器,锥角越小越不易产生通气超空泡。此外,还将圆盘形空化器超空泡形态的试验结果与理论结果进行了比较,其总的规律是相一致的。

关键词：空化器直径空化器线形通气超空泡通气流量水洞实验

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轴对称航行体通气超空泡的特性实验研究

工程力学 2007年第2期24卷 166-171页

作者：王海斌王聪魏英杰于开平张嘉钟贾力平哈尔滨工业大学航天学院哈尔滨150001

为了研究超空泡的减阻效果,保证在较低流速下生成超空泡,在水洞中开展了水下航行体通气超空泡的实验研究。采用通气的方法在较低水速下(V=7m/s～15m/s)生成人工通气超空泡,通过改变通气率和弗洛德数,获得了不同条件下通气空泡的长度,给... 详细信息

为了研究超空泡的减阻效果,保证在较低流速下生成超空泡,在水洞中开展了水下航行体通气超空泡的实验研究。采用通气的方法在较低水速下(V=7m/s～15m/s)生成人工通气超空泡,通过改变通气率和弗洛德数,获得了不同条件下通气空泡的长度,给出了不同空泡长度下的模型阻力系数。研究结果表明,来流速度不变时,空泡长度随通气率的增加而增加,阻力系数随空泡长度的增加先递增后递减;重力场造成了空泡形态的严重不对称,通过比较模型上下表面的空泡长度,定量的给出了弗洛德数对通气空泡长度的影响。当Fr>43.74时,重力场对通气空泡长度的影响几乎可以忽略。

关键词：水下航行体弗洛德数通气超空泡阻力系数水洞实验

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超空泡航行体的增益自适应变结构控制设计

兵工学报 2010年第3期31卷 303-308页

作者：吕瑞于开平魏英杰曹伟张嘉钟王京华哈尔滨工业大学航天学院黑龙江哈尔滨150001

针对超空泡航行体在实际巡航时具有其独特的运动特性,同时存在流体动力系数的摄动及尾部流体未知干扰等问题,提出了增益自适应变结构的控制方法。首先改进了目前普遍采用的超空泡航行体的数学模型,借鉴Backstepping思想设计了滑动模态面... 详细信息

针对超空泡航行体在实际巡航时具有其独特的运动特性,同时存在流体动力系数的摄动及尾部流体未知干扰等问题,提出了增益自适应变结构的控制方法。首先改进了目前普遍采用的超空泡航行体的数学模型,借鉴Backstepping思想设计了滑动模态面;采用增益自适应算法对干扰未知上界进行了估计,最后设计了基于变结构理论的控制器,并进行了数学仿真。仿真结果表明:该系统响应快速,具有很好的鲁棒稳定性能。

关键词：控制理论超空泡数学模型自适应变结构控制