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Algebraically explicit analytical solu-tions for the unsteady non-Newtonian swirling flow in an annular pipe

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Science China(Physics,Mechanics & Astronomy) 2006年第4期49卷 396-400页

作者： cai ruixian1 &{1.,2.1. {4. of engineering {4., chinese academy of sciences, Beijing 100080, China 2. Graduate School, chinese academy of sciences, Beijing 100080, China institute of {1. {2. Chinese Academy of Sciences Beijing China Graduate School Chinese Academy of Sciences Beijing China

This paper presents two algebraically explicit analytical solutions for the incompressible unsteady rotational flow of Oldroyd-B type in an annular pipe. The first solution is derived with the common method of separation of variables. The second one is deduced with the method of separation of variables with addition developed in recent years. The first analytical solution is of clear physical meaning and both of them are fairly simple and valuable for the newly developing computational fluid dynamics. They can be used as the benchmark solutions to verify the applicability of the existing numerical computational methods and to inspire new differencing schemes, grid generation ways, etc. Moreover, a steady solution for the generalized second grade rheologic fluid flow is also presented. The correctness of these solutions can be easily proven by substituting them into the original governing equation.

关键词： analytical solution, Oldroyd-B type fluid, swirling flow, non-Newtonian.

Fundamental study of CO_2.control technologies and policies in China

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Science China(Technological {1.) 2008年第7期51卷 857-870页

作者： JIN HongGuang1. zhang XiLiang2. GAO Lin1. YUE Li2. HE JianKun{1. cai ruixian1 1.institute of engineering {4., chinese academy of sciences, Beijing 100080, China 2.institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 1.0084. China institute of {1. {2. Chinese Academy of Sciences Beijing China institute of Nuclear and New Energy Technology Tsinghua University Beijing China

The technical roadmap and policies for CO2.mitigation suitable for China are a common center of attention in the fields of energy, environment, and management science in the country. Emphasizing interaction between technical research and policy research, this work discovers the potential breakthrough in the integrated field. The technical difficulties of recovering CO2.are pointed out, the mechanism of combining CO2.recovery with energy conversion is investigated, and the basic principle for integrating an environmental-friendly energy system is discussed. Moreover, the formulation of a new energy system that can recover CO2.with very low or even zero energy penalty is proposed, while the assessment methodology and model system for the technical roadmap of CO2.emission control are developed. Finally, a new technical roadmap constructing an energy network suitable for China is proposed, which may provide a new way for the development of sustainable energy and environment technologies.

关键词： CO2 capture and storage technical roadmap energy policy

Explicit analytical solutions fof transport equations considering non-Fourier and non-Fick effects in porous media

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Progress in natural Science:Materials International 2005年第6期 545-549页

作者： gou chenhua 1,2., {2.* and {4. na1(1. institute of {4. thermophysics, chinese academy of sciences, Beijing 100080, China 2. Graduate School, chinese academy of sciences, Beijing 100080, China)

Based on the method of separation variables with addition developed in recent years, new methods of separation variables are proposed, and two algebraically explicit analytical solutions to the general partial differential equation set of non-Fourier and non-Fick heat and mass transfer in porous media drying are derived. The physical meaning of these solutions is simple and clear, and they are valuable for computational heat and mass transfer as benchmark solutions.

关键词： non-Fourier effects non-Fick effects porous media heat and mass transfer analytical solution.

Algebraically explicit analytical solutions of unsteady conduction with variable thermal properties in cylindrical coordinate

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Progress in natural Science:Materials International 2004年第4期 28-35页

作者： cai {1. and {2. na({4. of engineering {4., chinese academy of sciences, Beijing 100080, China) institute of {1. {2. Chinese Academy of SciencesBeijing 100080China

The analytical solutions of unsteady heat conduction with variable thermal properties (thermal conductivity, density and specific heat are functions of temperature or coordinates) are meaningful in theory. In addition, they are very useful to the computational heat conduction to check the numerical solutions and to develop numerical schemes, grid generation methods and so forth. Such solutions in rectangular coordinates have been derived by the authors. Some other solutions for {4.D and 2.D axisymmetrical heat conduction in cylindrical coordinates are given in this paper to promote the heat conduction theory and to develop the relative computational heat conduction.

关键词： analytical solution heat conduction nonlinear variable thermal property cylindrical coordinates.

Explicit analytical solutions of axisymmetric laminar natural convection along vertical tubes

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Progress in natural Science:Materials International 2005年第3期 66-69页

作者： cai ruixian ˇˇ ,{2. na and {4. chenhua (institute of {4. thermophysics,chinese academy of sciences,Beijing{12.,China) institute of {1. {2. Chinese Academy of Sciences Beijing 100080 China

There are many natural convection processes in various fields,and it is still valuable to investigate the fluid dynamics and heat transfer of natural *** analytical solutions are meaningful in both theoretical investigation and practical ***-cially,they can be used as the benchmark solutions to check the numerical solutions and to develop numerical differencing schemes,grid generation methods and so *** explicit analytical solutions of axisymmetric steady laminar natural convection along a vertical tube with porous wall and between two vertical concentric tubes are derived for better understanding of the flow and heat transfer as well as promot-ing the computational fluid dynamics and computational heat transfer.

关键词： analytical solution natural convection laminar flow boundary layer vertical cylindrical tube.

Electronic and Optical Properties of Rock-Salt A1. under High Pressure via First-Principles Analysis

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Communications in Theoretical Physics 2008年第10期50卷 990-994页

作者： zhang Wei CHEN Xiang-Rong {1. Ling-Cang {2. Qing-Quan institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China International Centre for Materials Physics Chinese Academy of Sciences Shenyang 110016 China Laboratory for Shock Wave and Detonation Physics Research Institute of Fluid Physics Chinese Academy of Engineering Physics Mianyang 621900 China

Electronic and optical properties of rock-salt AIN under high pressure are investigated by first-principlesmethod based on the plane-wave basis *** of band structures suggests that the rock-salt AIN has an indirectgap of 4.53 eV,which is in good agreement with other *** investigating the effects of pressure on the energygap,the different movement of conduction band at X point below and above 2..5 GPa is *** opticalproperties including dielectric function,absorption,reflectivity,and refractive index are also calculated and *** found that the rock-salt AIN is transparent from the partially ultra-violet to the visible light area and hardly does thetransparence affected by the ***,the curve of optical spectrum will shift to high energy area (blueshift) with increasing pressure.

关键词： semiconductors electronic band structure optical properties density functional theory

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 {2. Wenyong {2. Wujun {2. Yijian {2. Yizhou {2. Yuchen {2. Haiying {2. Huacheng {2. 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 {1. of {2. physics MianyangSichuan China building materials {1. Beijing China Center of Advanced Science and Technology Beijing China {1. of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geo{1. Beijing China University of Geo{1. 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 {4.{4.GeV Damping Ring,a Booster capable of achieving energies up to {4.0 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 {4.0 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×{4.^(34.cm^(-2.s^(-{4.per interaction point(IP),resulting in an integrated luminosity of {4. ab^(-{4.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,2.{4.)and the Conceptual Design Report(CDR,2.{4.),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 2.2.-2.2.,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2.30s.

关键词： initiated exceeding precise

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薏苡压缩力学特性试验及响应面优化

安徽农业大学学报 2021年第4期48卷 680-687页

作者：秦代林蒋小霞蔡金雄苟康林周树峰张黎骅四川农业大学机电学院雅安625014 四川农业大学玉米研究所成都611130

为研究薏苡力学特性,提高机械脱壳方式下的薏苡脱壳质量。以破壳力和破仁力为试验指标进行了薏苡的压缩力学特性试验。采用单因素试验分析施压方向、施压速度和干基含水率对薏苡破壳力和破仁力的影响,通过Box-Behnken中心组合试验设计... 详细信息

为研究薏苡力学特性,提高机械脱壳方式下的薏苡脱壳质量。以破壳力和破仁力为试验指标进行了薏苡的压缩力学特性试验。采用单因素试验分析施压方向、施压速度和干基含水率对薏苡破壳力和破仁力的影响,通过Box-Behnken中心组合试验设计建立了破壳力、破仁力与试验因素的数学回归模型,并利用响应面法以薏苡可承受的破壳力最小、破仁力最大为优化目标得到薏苡脱壳的最佳组合参数为:施压方向为正向施压,施压速度7.598mm·min^(-1.,干基含水率7.04.%,此时的薏苡可承受的破壳力为2..067 N,破仁力为86.01. N。经平行试验验证得到的破壳力为2.0}1.N,破仁力为82.6 N。验证结果与优化结果误差均小于5.0%,优化结果具有较高的可信度。研究结论可为薏苡脱壳加工装备的研究与优化提供理论依据与技术参考。

关键词：薏苡力学特性响应面优化脱壳条件

纳米银对猪链球菌体外抗菌活性及其生物膜形成的影响

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中国畜牧兽医 2022年第3期49卷 1172-1180页

作者：刘宝玲李春玲蒋智勇杨冬霞张昆丽楚品品勾红潮蔡汝健广东省农业科学院动物卫生研究所广东省畜禽疫病防治研究重点实验室农业农村部兽用药物与诊断技术广东科学观测实验站广州510640 仲恺农业工程学院动物科技学院广州510225

【目的】研究纳米银(silver nanoparticles,AgNPs)对多重耐药猪链球菌(Streptococcus suis,***)的体外抗菌活性及其生物膜形成的影响,为解决猪链球菌的耐药问题提供参考。【方法】以5株临床分离的多重耐药猪链球菌(S1.1.、S894.S786、S... 详细信息

【目的】研究纳米银(silver nanoparticles,AgNPs)对多重耐药猪链球菌(Streptococcus suis,***)的体外抗菌活性及其生物膜形成的影响,为解决猪链球菌的耐药问题提供参考。【方法】以5株临床分离的多重耐药猪链球菌(S1.1.、S894.S786、S81.和S84.)为研究对象,采用微量肉汤稀释法测定AgNPs对5株猪链球菌的最小抑菌浓度(minimum inhibitory concentration,MIC)和最小杀菌浓度(minimum bactericidal concentration,MBC),通过测定AgNPs作用下细菌的生长速率以及不同浓度AgNPs对猪链球菌的抑制率来评价AgNPs的抗菌活性;通过结晶紫染色法测定各菌株生物膜的形成能力和6.{4.、1..5、{4.、50μg/mL AgNPs对5株多重耐药猪链球菌菌株生物膜形成的影响。【结果】AgNPs对S1.1.株的MIC和MBC均为1..5μg/mL,对其余4.多重耐药猪链球菌的MIC和MBC均为{4..0μg/mL;AgNPs对多重耐药猪链球菌的抗菌活性好,{4.~1.0μg/mL AgNPs对5株菌的抑制率可以达到96.60%~99.70%,在1.{4.IC、1.IC和{4.IC AgNPs作用下细菌生长速率明显受到抑制。5株多重耐药猪链球菌均能形成生物膜,6.{4.、1..5、{4.、50μg/mL AgNPs对5株多重耐药猪链球菌菌株生物膜形成的抑制率为1..98%~4..58%。【结论】AgNPs对多重耐药猪链球菌的活性和生物膜形成均具有抑制作用。

关键词：纳米银多重耐药猪链球菌生物膜