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Numerical simulation research on surface radiation heat calculation of spacecraft in orbit whole course

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航空动力学报 2010年第10期25卷 2229-2237页

作者： SUN bing zhang Tao School of Astronautics Beijing University of Aeronautics and Astronautics Beijing 100191 China

The surface radiation heat simulation program based on Microsoft VC++ 6.0 for spacecraft in whole orbit course was *** to complexity of spacecraft structure,the spacecraft structures were decomposed to relatively regular *** generation of calculation grid was conducted by using structured grid and unstructured *** mainly solved automatic grid generation for arbitrary surface and data transmission between arbitrary shape interfaces,and the geometry structure,physical process,calculation accuracy and efficiency were *** factors and radiation transfer coefficients were calculated by combining finite element method and ray uniform *** to the position of surface cells,external heat flux was calculated with integral method for non-shaded surface and with ray uniform distribution method for shaded *** the spacecraft surface was wrapped with multilayer insulation material,the temperature field of multilayer insulation material was calculated with nodal network method and finite volume *** temperature of other parts without wrap was calculated with finite element *** temperature of unconnected regions available with radiation heat transfer relations was analyzed,and the calculation formulae were *** experiment shows that the simulation program is correct and effective.

关键词： spacecraft radiation heat calculation whole course numerical simulation

Novel TPN control algorithm for exoatmospheric intercept

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Journal of Systems Engineering and Electronics 2009年第6期20卷 1290-1295页

作者： Chen Lei zhang bing Coll. of Aerospace and Material Engineering National Univ. of Defense Technology Changsha 410073 P. R. China

A novel control algorithm with fixed pulse thrust, based on true proportional navigation（TPN）, is proposed for exoatmospheric *** to the TPN guidance law and pulse thrust characteristics, the principle of control command is presented, the control stability and precision are *** the help of the TPN guidance law, the algorithm can automatically modulate the turn-on time and duration of the thrust, which could effectively limit the impact of measure noise of the line-of-sight（LOS） angle and rate on the interception *** last, the number-theoretic method（NTM） is introduced to acquire the relation between control algorithm and miss-distance, even as it simulates the intercept process with initial state *** the reliability of the algorithm is demonstrated with the simulation result.

关键词： exoatmospheric intercept true proportional navigation pulse thrust control algorithm numbertheoretic method.

Motivational interviewing in postoperative rehabilitation and chronic disease management: Current findings and future research directions

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World Journal of Psychiatry 2025年第1期15卷 26-31页

作者： bing-Ren zhang Xiao Yang Affiliated Hospital(School of Clinical Medicine) Hangzhou Normal UniversityHangzhou 311121Zhejiang ProvinceChina Mental Health Education and Counseling Center Hangzhou Normal UniversityHangzhou 311121Zhejiang ProvinceChina

This editorial highlights a recently published study examining the effectiveness of music therapy combined with motivational interviewing(MI)in addressing an-xiety and depression among young and middle-aged patients following percuta-neous coronary *** further explores existing evidence and potential future research directions for MI in postoperative rehabilitation and chronic disease *** aims to facilitate behavioral change and promote healthier lifestyles by fostering a trusting relationship with patients and enhan-cing intrinsic *** has demonstrated its effectiveness in posto-perative recovery for oncological surgery,stroke,organ transplants,and gastroin-testinal procedures,as well as in managing chronic conditions such as diabetes,obesity,and periodontal *** approach is patient-centered,adaptable,cost-effective,and easily replicable,though its limitations include reliance on the therapist’s expertise,variability in individual responses,and insufficient long-term follow-up *** research could focus on developing individualized and precise intervention models,exploring applications in digital health management,and confirming long-term outcomes to provide more compre-hensive support for patient rehabilitation.

关键词： Chronic disease management Motivational interviewing Patient-centered Postoperative rehabilitation Treatment adherence

When and How Plate Tectonics Began?

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Journal of Earth Science 2023年第4期34卷 1302-1303页

作者： Shao-bing zhang School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China

Plate tectonics is the most important discovery in Earth Science in the 20th Century and is the core theory of Solid Earth Science. It describes that the Earth’ s lithosphere is divided into several plates that slide on top of the asthenosphere and move relative to each other along divergent, convergent, and transform plate boundaries. From a physical point of view.

关键词： Earth divergent tectonics

Einstein Probe discovery of EP240408a: A peculiar X-ray transient with an intermediate timescale

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 222-240页

作者： Wenda zhang Weimin Yuan Zhixing Ling Yong Chen Nanda Rea Arne Rau Zhiming Cai Huaqing Cheng Francesco Coti Zelati Lixin Dai Jingwei Hu Shumei Jia Chichuan Jin Dongyue Li Paul O’Brien Rongfeng Shen Xinwen Shu Shengli Sun Xiaojin Sun Xiaofeng Wang Lei Yang bing zhang Chen zhang Shuang-Nan zhang Yonghe zhang Jie An David Buckley Alexis Coleiro Bertrand Cordier Liming Dou Rob Eyles-Ferris Zhou Fan Hua Feng Shaoyu Fu Johan P.U.Fynbo Lluis Galbany Saurabh W.Jha Shuaiqing Jiang Albert Kong Erik Kuulkers Weihua Lei Wenxiong Li Bifang Liu Mingjun Liu Xing Liu Yuan Liu Zhu Liu Chandreyee Maitra Alessio Marino Itumeleng Monageng Kirpal Nandra Jeremy Sanders Roberto Soria Lian Tao Junfeng Wang Song Wang Tinggui Wang Zhongxiang Wang Qingwen Wu Xuefeng Wu Dong Xu Yanjun Xu Suijian Xue Yongquan Xue Zijian zhang Zipei Zhu Hu Zou Congying Bao Fansheng Chen Houlei Chen Tianxiang Chen Wei Chen Yehai Chen Yifan Chen Chenzhou Cui Weiwei Cui Yanfeng Dai Dongwei Fan Ju Guan Dawei Han Dongjie Hou Haibo Hu Maohai Huang Jia Huo Zhenqing Jia Bowen Jiang Ge Jin Chengkui Li Junfei Li Longhui Li Maoshun Li Wei Li Zhengda Li Tianying Lian Congzhan Liu Heyang Liu Huaqiu Liu Fangjun Lu Laidan Luo Jia Ma Xuan Mao Haiwu Pan Xin Pan Liming Song Hui Sun Yunyin Tan Qingjun Tang Yihan Tao Hao Wang Juan Wang Lei Wang Wenxin Wang Yilong Wang Yusa Wang Qinyu Wu Haitao Xu Jingjing Xu Xinpeng Xu Yunfei Xu Zhao Xu Changbin Xue Yulong Xue Ailiang Yan Haonan Yang Xiongtao Yang Yanji Yang Juan zhang Mo zhang Wenjie zhang Zhen zhang Zhen zhang Ziliang zhang Donghua Zhao Haisheng Zhao Xiaofan Zhao Zijian Zhao Hongyan Zhou Yilin Zhou Yuxuan Zhu Zhencai Zhu National Astronomical Observatories Chinese Academy of Sciences School of Astronomy and Space Sciences University of Chinese Academy of Sciences Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Institute of Space Sciences (ICE) CSIC Institut d’Estudis Espacials de Catalunya (IEEC) Max Planck Institute for Extraterrestrial Physics Innovation Academy for Microsatellites Chinese Academy of Sciences Department of Physics University of Hong Kong School of Physics and Astronomy University of Leicester School of Physics and Astronomy Sun Yat-sen University Department of Physics Anhui Normal University Shanghai Institute of Technical Physics Chinese Academy of Sciences Physics Department Tsinghua University Nevada Center for Astrophysics University of Nevada Las Vegas Department of Physics and Astronomy University of Nevada Las Vegas South African Astronomical Observatory Department of Astronomy University of Cape Town Department of Physics University of the Free State Université Paris Cité CNRS Astroparticule et Cosmologie Université Paris Cité CEA Paris-Saclay IRFU/DAp-AIM Department of Astronomy Guangzhou University Cosmic Dawn Center (DAWN) Niels Bohr Institute University of Copenhagen Department of Physics and Astronomy Rutgers the State University of New Jersey Institute for Cosmic Ray Research The University of Tokyo ESA/ESTEC Department of Astronomy School of Physics Huazhong University of Science and Technology INAF-Osservatorio Astrofisico di Torino Sydney Institute for Astronomy School of Physics The University of Sydney Department of Astronomy Xiamen University Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University Department of Astronomy University of Science and Technology School of Astronomy and Space Sciences University of Science and Technology of China Institute of Deep Space Sciences Deep Space Exploration Laboratory Department of Astronomy School of Physics and Astronomy Yunnan University Shanghai Astronomical Observatory Chi

We report the discovery of a peculiar X-ray transient,EP240408a,by Einstein Probe （EP） and follow-up studies made with EP,Swift,NICER,GROND,ATCA and other ground-based multiwavelength *** new transient was first detected with Wide-field X-ray Telescope （WXT） on board EP on April 8th,2024,manifested in an intense yet brief X-ray flare lasting for *** flare reached a peak flux of 3.9×10-9erg cm-2s-1in 0.5-4 ke V,～300 times brighter than the underlying X-ray emission detected throughout the *** and more precise follow-up observations by EP/FXT,Swift and NICER confirmed the finding of this new *** X-ray spectrum is non-thermal in 0.5-10 ke V,with a power-law photon index varying *** X-ray light curve shows a plateau lasting for ～4 d,followed by a steep decay till becoming undetectable ～10 d after the initial *** on its temporal property and constraints from previous EP observations,an unusual timescale in the range of 7-23 d is found for EP240408a,which is intermediate between the commonly found fast and long-term *** counterparts have been found in optical and near-infrared,with the earliest observation at 17 h after the initial X-ray detection,suggestive of intrinsically weak emission in these *** demonstrate that the remarkable properties of EP240408a are inconsistent with any of the transient types known so far,by comparison with,in particular,jetted tidal disruption events,gamma-ray bursts,X-ray binaries and fast blue optical *** nature of EP240408a thus remains an *** suggest that EP240408a may represent a new type of transients with intermediate timescales of the order of～10 *** detection and follow-ups of more of such objects are essential for revealing their origin.

关键词： X-ray transients ${\bm~{Einstein~~Probe}}$

Progress and perspective of high-voltage lithium cobalt oxide in lithium-ion batteries

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Journal of Energy Chemistry 2022年第11期31卷 283-308,I0008页

作者： Qian Wu bing zhang Yingying Lu State Key Laboratory of Chemical Engineering Institute of Pharmaceutical EngineeringCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311200ZhejiangChina

Lithium cobalt oxide(LiCoO_(2),LCO)dominates in 3C(computer,communication,and consumer)electronics-based batteries with the merits of extraordinary volumetric and gravimetric energy density,high-voltage plateau,and facile ***,the demand for lightweight and longer standby smart portable electronic products drives the development of the upper cut-off voltage of LCO-based batteries to further improve the energy ***,several challenges,including irreversible structural transformation,surface degradation,cobalt dissolution and oxygen evolution along with detrimental side reactions with the electrolyte remain with charging to a high cut-off voltage(>4.2 V ***/Li+),resulting in rapid capacity decay and safety *** on the degradation mechanisms and latest advances of the high-voltage LCO,this review summarizes modification strategies in view of the LCO structure,artificial interface design and electrolytes ***,many advanced characterization and monitoring techniques utilized to clarify the structural and interfacial evolution of LCO during charge/discharge process are critically ***,the perspectives in terms of integrating multiple modification strategies,applying gel and solid-state electrolytes,optimizing the recovery process and scalable production are presented.

关键词： LiCoO2 Electrode-electrolyte interface Lithium batteries Characterization techniques

Numerical research on adverse effect of muzzle flow formed by muzzle brake considering secondary combustion

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Defence Technology（防务技术） 2021年第4期17卷 1178-1189页

作者： Peng-fei Li Xiao-bing zhang School of Energy and Power Engineering Nanjing University of Science and TechnologyNanjing210094PR China

The simulation of the artillery interior and intermediate ballistics problem is performed to investigate the influence of a gas dynamics device,muzzle brake,on the muzzle hazard phenomena,such as flash and blast *** correlation of the chemical reactions with the characteristics of the muzzle flow field is analyzed by the simulation for a further understanding of the secondary combustion phenomenon of the muzzle *** novel structure of muzzle flow caused by the muzzle brake is presented by the simultaneous solution of the interior ballistics model and multi-species Navier-Stokes equations in order to analyze the influence of the muzzle brake structure on the chemical *** secondary combustion of the muzzle flow due to the oxygen-supplement chemical reactions is obtained by the chemical reaction kinetic *** interaction of the blast waves released from the muzzle brake is illustrated in detail and the mechanism of the formation of muzzle flash is *** research provides a reference for the studies on the suppression of the muzzle flash.

关键词： Muzzle flow Muzzle brake Secondary combustion Chemical reaction

Comprehensive compensation method for the influence of disturbing gravity field on long-range rocket guidance computing

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Chinese Journal of Aeronautics 2022年第3期35卷 408-418页

作者： Yansheng WU Zongqiang WANG bing zhang China Aerospace Science and Technology Corporation Beijing 100048China Beijing Institute of Astronautical Systems Engineering Beijing 100076China

With the improvement of the accuracy of the inertial system,the influence of the disturbing gravity field on the accuracy of long-range rocket has become increasingly ***,in actual engineering,there are problems of low accuracy and being time-consuming for disturbing gravity field *** view of this,this paper proposes a set of online comprehensive solutions combining disturbing gravity reconstruction and stellar *** to the pre-launch binding parameters,the net function assignment method is used in the navigation system to calculate disturbing gravity in the boost phase *** the guidance system,a closed-loop guidance online compensation method is proposed based on the state-space perturbation method for the disturbing gravity in the coast *** the same time,the vertical deflection can also be corrected by stellar *** calculation results are simulated and verified under different *** results show that the proposed online compensation algorithm has an accuracy improvement compared with the element compensation algorithm on *** the stellar guidance algorithm can further correct the impact *** impact deviation after comprehensive compensation does not exceed 50 m,and the compensation percentage is greater than 65%.

关键词： Disturbing gravity field Long-range rocket Online compensation Stellar guidance Vertical deflection

Effect of resonant neutrino oscillation on TeV neutrino flavor ratio from choked GRBs

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Research in Astronomy and Astrophysics 2010年第10期10卷 943-949页

作者： Sarira Sahu bing zhang Instituto de Ciencias Nucleares Universidad Nacional Autonoma de Mexico Circuito Exterior C.U. A. Postal 70-54304510 Mexico DF Mexico Department of Physics and Astronomy University of Nevada Las Vegas NV 89154 USA

In the collapsar scenario of the long duration Gamma-Ray Bursts （GRBs）, multi-TeV neutrino emission is predicted as the jet makes its way through the stellar envelope. Such a neutrino signal is also expected for more general ＂failed＂ GRBs in which a putative jet is ＂choked＂ by a heavy envelope. If the Ve → Vu neutrino oscillation parameters are in the atmospheric neutrino oscillation range, we show that the resonant oscillation of Ve←→Vu,τ can take place within the inner high density region of the choked jet progenitor with a heavy envelope, altering the u flavor ratio on its surface to Фs Ve：Фsvu：Фsvt=5：11：2. Considering vacuum oscillations of these neutrinos on their way to Earth, the final flavor ratio detected on Earth is further modified to either 1：1.095：1.095 for the large mixing angle solution to the solar neutrino data, or 1：1.3：1.3 for maximal mixing among the muon and tau neutrinos in the vacuum.

关键词： gamma rays: bursts