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Meeting Our New Associate Editor

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Chinese Journal of Chemistry 2019年第1期37卷 88-88页

作者： hai-bo yang Key Laboratory of Green Chemistry and Chemical Processes School of Chemistryand Molecular Engineering East China Normal University

Education 1994.09-1998.07 *** of Chemistry,Beijing Normal University 1998.09-2001.07 *** of Chemistry,Beijing Normal University (Supervisor:*** Cheng) 2001.09-2004.07 *** of Chemistry,CAS (Supervisor:Prof,Mei-Xiang Wang)

关键词： Meeting Editor

Numerical Prediction and Experimental Verification of Flow Field in Hypersonic Wind Tunnel

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Numerical Prediction and Experimental Verification of Flow F...

Numerical Prediction of Flow Field and Aerodynamic Heating in the Gap of Hypersonic Vehicle

作者： Xue-wen SUN hai-bo yang Tao MI School of Mechanical Engineering University of Science and Technology Beijing Key Laboratory of Fluid Interaction with Material Ministry of Education Centre of Excellence for Advanced Materials School of Materials Engineering North China Institute of Aerospace Engineering

The knowledge of the flow field inside the wind tunnel is an essential element for the identification of test *** the sake of obtaining more insight of the flow propagation throughout a newly built wind tunnel,numerical simulation of the flow field is performed,and the Navier–Stokes equations are solved using the computational fluid dynamics（CFD） code *** surveys of the wind tunnel flow with pressure sensors and thermocouple sensors are also performed,providing valuable data for the flow *** Mach number,temperature and pressure in the core area of the wind tunnel are obtained,and the behavior of flow propagation is quantitatively *** simulation results of the CFD model have a good agreement with the experimental *** this study,the flow field characteristics of the wind tunnel are obtained,which can provide some reference for future experiments.

关键词： Hypersonic Wind tunnel Flow field Numerical simulation

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Numerical Prediction of Flow Field and Aerodynamic Heating i...

Improvement of carbothermic reduction of nickel slag by addition of CaCO3

Prediction of flow field and thermal environment in the gap is crucial to the design of hypersonic vehicle thermal protection system. The compressible Navier-Stokes equation is solved to study the flow field and aerodynamic heating in the gap. The effect of inflow parameter on the aerodynamic heating is analyzed. The results show that there are vortex motions in the gap. The heat transfer in the gap mainly depends on the convection in the top region. The heat flux along the gap wall distributes in U-shape, and at the outlet of the gap is highest, which is the key point in the thermal protection design. As the angle of attack increases, the number of vortices will decrease gradually, and wall heat flux will increase, especially at the gap exit. The research results provide references for the design and optimization of thermal protection system.

关键词： Hypersonic Gap flow Aerodynamic heating Numerical simulation

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Transactions of Nonferrous Metals Society of China 2019年第12期29卷 2658-2666页

作者： Xiao-ming LI Zhen-yu WEN Yi LI hai-bo yang Xiang-dong XING School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Shaanxi Engineering Research Center of Metallurgy Xi’an University of Architecture and TechnologyXi’an 710055China

The effect of CaCO3 addition on the carbothermic reduction of nickel slag was studied,and the mechanism of CaCO3 in improving the reduction was *** results showed that when the CaCO3 content added to the slag was increased from 0 to 8 wt.%,initiation temperature of the carbothermic reaction decreased from 1100 to 1000℃,the temperature reaching the maximum reduction rate decreased from 1150 to 1100℃,and the reduction degree of the nickel slag increased from 58%to 88%.The iron particles in the reduced nickel slag were coarsened and the X-ray diffraction intensity of metallic iron peaks increased,confirming that the addition of CaCO3 was beneficial to the reduction of nickel slag and recovery of iron.

关键词： nickel slag fayalite carbothermic reduction CaCO3

Design and tests of the prototype a beam monitor of the CSR external target experiment

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Nuclear Science and Techniques 2022年第3期33卷 137-151页

作者： Hu-Lin Wang Zhen Wang Chao-Song Gao Jian-Wei Liao Xiang-Ming Sun hai-bo yang Cheng-Xin Zhao Jun Liu Peng Ma Zi-Li Li Bi-Hui You Ping yang Di Guo Le Xiao Dong-Liang Zhang Yue-Zhao Zhang Sheng Dong Wan-Han Feng Yu-Xin Qiao Zheng-Yu Hu Qing-Wen Ye Zeng-Tao Guo Guang-Ming Huang Feng Liu PLAC Key Laboratory of Quark and Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China Hubei Provincial Engineering Research Center of Silicon Pixel Chip&Detection Technology Wuhan 430079China School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550001China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

A prototype beam monitor was designed to provide tracking information for heavy-ion projectiles for the cool storage ring(CSR)external target experiment(CEE)at the Heavy Ion Research Facility in Lanzhou(HIRFL).High granularity and direct charge sensing are the main features of this *** measures the beam position in a two-dimensional(2D)plane transverse to the beam direction on an event-by-event *** current design consists of two field cages inside a single vessel that operates independently and has electrical drift fields in orthogonal *** tests of the prototype were performed using a^(241)Am a *** results show that a spatial resolution of less than 40μm and a time resolution of less than 600 ns can be achieved.

关键词： CEE Beam monitor Heavy ion Topmetal sensor Tracking Field cage

基于chirp信号的宽频带相控阵雷达数字补偿技术

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北京理工大学学报 2016年第9期36卷 966-970页

作者：刘海波牛阳任晓远王珣北京理工大学信息与电子学院北京100081

针对宽频带大口径相控阵雷达孔径渡越时间问题,提出了一种直接宽带数字中频的宽频带相控阵雷达实现框架,并基于chirp信号提出了使用数字去斜技术补偿孔径渡越时间,使用数字本振相位调整补偿射频通道一致性的信号处理方法.结合实际硬件... 详细信息

针对宽频带大口径相控阵雷达孔径渡越时间问题,提出了一种直接宽带数字中频的宽频带相控阵雷达实现框架,并基于chirp信号提出了使用数字去斜技术补偿孔径渡越时间,使用数字本振相位调整补偿射频通道一致性的信号处理方法.结合实际硬件系统验证了方法的有效性和工程可实现性,结果表明本文方法可有效补偿孔径渡越时间和射频通道的不一致性.

关键词：宽频带相控阵雷达孔径渡越时间射频通道不一致性数字补偿

供应提前期和需求不确定下库存系统的随机比较

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运筹与管理 2018年第7期27卷 76-83页

作者：禹海波杨帆李媛北京工业大学经济与管理学院北京100124

本文研究供应提前期和需求不确定下包含最小化成本和最大化利润的一致化报童问题中随机比较实现的充分条件,并通过随机比较定量刻画提前期和需求不确定性对库存系统决策和利润的影响。首先引入报童收益函数,给出其优化前后满足随机占优... 详细信息

本文研究供应提前期和需求不确定下包含最小化成本和最大化利润的一致化报童问题中随机比较实现的充分条件,并通过随机比较定量刻画提前期和需求不确定性对库存系统决策和利润的影响。首先引入报童收益函数,给出其优化前后满足随机占优及拉普拉斯变换序的充分条件。进一步,在周期需求服从指数分布的情形下,定量刻画固定提前期与提前期服从几何分布两种情况的随机单调性。最后,将上述结论应用到报童模型中,得到提前期需求对一致化报童问题的随机单调性。

关键词：提前期不确定性提前期需求随机占优报童模型

Effects of aggregate size distribution and carbon nanotubes on the mechanical properties of cemented gangue backfill samples under true triaxial compression

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 311-324页

作者： Qian Yin Fan Wen Zhigang Tao hai Pu Tianci Deng Yaoyao Meng Qingbin Meng Hongwen Jing bo Meng Jiangyu Wu State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering China University of Mining and TechnologyXuzhou 221116China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China State Key Laboratory for Geomechanics&Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 100083China Key Laboratory of Xinjiang Coal Resources Green Mining Ministry of EducationXinjiang Institute of EngineeringUrumqi 830023China

The mechanical behavior of cemented gangue backfill materials(CGBMs)is closely related to particle size distribution(PSD)of aggregates and properties of cementitious ***,the true triaxial compression tests,CT scanning,SEM,and EDS tests were conducted on cemented gangue backfill samples(CGBSs)with various carbon nanotube concentrations(P_(CNT))that satisfied fractal theory for the PSD of *** mechanical properties,energy dissipations,and failure mechanisms of the CGBSs under true triaxial compression were systematically *** results indicate that appropriate carbon nanotubes(CNTs)effectively enhance the mechanical properties and energy dissipations of CGBSs through micropore filling and microcrack bridging,and the optimal effect appears at P_(CNT)of 0.08wt%.Taking PSD fractal dimension(D)of 2.500 as an example,compared to that of CGBS without CNT,the peak strength(σ_(p)),axial peak strain(ε_(1,p)),elastic strain energy(Ue),and dissipated energy(U_(d))increased by 12.76%,29.60%,19.05%,and90.39%,***,excessive CNTs can reduce the mechanical properties of CGBSs due to CNT agglomeration,manifesting a decrease inρ_(p),ε_(1,p),and the volumetric strain increment(Δε_(v))when P_(CNT)increases from 0.08wt%to 0.12wt%.Moreover,the addition of CNTs improved the integrity of CGBS after macroscopic failure,and crack extension in CGBSs appeared in two modes:detour and pass through the ***σ_(p)and U_(d)firstly increase and then decrease with increasing D,and porosity shows the opposite ***ε_(1,p)andΔε_(v)are negatively correlated with D,and CGBS with D=2.150 has the maximum deformation parameters(ε_(1,p)=0.05079,Δε_(v)=0.01990)due to the frictional slip effect caused by coarse *** increasing D,the failure modes of CGBSs are sequentially manifested as oblique shear failure,"Y-shaped"shear failure,and conjugate shear failure.

关键词： cemented gangue backfill materials particle size distribution true triaxial compression test carbon nanotubes mechanical properties failure modes

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以萘为共代谢的芘的好氧生物降解

环境工程学报 2016年第11期10卷 6332-6336页

作者：王文静陈海李博杨琦中国地质大学(北京)水资源与环境学院水资源与环境工程重点实验室北京100083

为更好有效去除地下水中的常见污染物芘,以萘为降解基质,利用苍白杆菌降解芘,并对反应影响因素进行了研究,模拟了反应动力学。结果表明:浓度为100 mg·L^(-1)、pH=7、25℃、萘的初始反应24 h后萘的去除率达到99.84%,芘的去除率达到37.5... 详细信息

为更好有效去除地下水中的常见污染物芘,以萘为降解基质,利用苍白杆菌降解芘,并对反应影响因素进行了研究,模拟了反应动力学。结果表明:浓度为100 mg·L^(-1)、pH=7、25℃、萘的初始反应24 h后萘的去除率达到99.84%,芘的去除率达到37.5%。另外,菌株在萘初始浓度不同的条件下对萘的降解符合一级动力学,对芘的降解符合二级动力学。结果表明苍白杆菌在去除地下水中的萘和芘方面具有很大前景。

关键词：萘芘生物降解共代谢动力学