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Chinese Journal of Aeronautics 2021年第8期34卷 1-15页

作者： Fu SONG Li ZHOU Zhanxue WANG Zhifu LIN jingwei shi Shaanxi Key Laboratory of Internal Aerodynamics in Aero-engine School of Power and EnergyNorthwestern Polytechnical UniversityXi'an 710129China

Forward Variable Area Bypass Injector(FVABI)is one of key components which contributes to modulate the cycle parameters of Variable Cycle Engine(VCE)under various operation *** modeling method of zero-dimensional FVABI was reviewed and its deficiency was analyzed based on FVABI flow *** order to improve the accuracy of VCE performance simulation,the high-fidelity modeling method of FVABI was developed based on its working *** it was coupled with the zero-dimensional VCE model and the multi-level VCE model was *** results indicate that the geometric and aerodynamic parameters can affect the interaction between the two airflows and the zero-dimensional FVABI model is too simple to predict the component performance accurately,especially when the FVABI inner bypass is *** on the performance curves for single bypass mode and the regression model of multi-scale support vector regression for double bypass mode,the high-fidelity model can predict FVABI performance accurately and *** integration of high-fidelity FVABI model into zerodimensional VCE model can be done by adjusting iterative variables and balance *** multi-level model has good convergence and it can predict VCE performance when the FVABI inner bypass is chocked.

关键词： Coupling method Forward variable area bypass injector High-fidelity model Multi-scale support vector regression Variable cycle engine

Experimental investigation and numerical analysis on high-efficiency shock vectoring control serpentine nozzles

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CHINESE JOURNAL OF AERONAUTICS 2024年第12期37卷 296-324页

作者： Hui, Zhonghao shi, jingwei Lin, Wentao Zhou, Li Wang, Zhanxue Liu, Yongquan Northwestern Polytech Univ Sch Power & Energy Xian 710072 Peoples R China Natl Key Lab Sci & Technol Adv Light Duty Gas Turb Xian 710129 Peoples R China Collaborat Innovat Ctr Adv Aeroengine Beijing 100191 Peoples R China

The high-efficiency Shock Vectoring Control Serpentine Nozzle (SVCSN) takes into account both thrust vectoring and infrared stealth, and significantly improves the comprehensive performance of the aero-engines through an additional auxiliary duct. In this paper, the schlieren photographs at the exit of the high-efficiency SVCSN and the wall static pressure distributions were obtained by experiments, and the numerical results were used to enrich the thrust vectoring characteristics. The effects of the auxiliary injection were analyzed first to reveal the advantages of the high-efficiency SVCSN compared to the conventional SVCSN. Then, the aerodynamic parameters and the structural parameters of the high-efficiency SVCSN were investigated, including the Nozzle Pressure Ratio (NPR), the Secondary flow Pressure Ratio (SPR), the secondary flow relative area and the secondary flow injection angle. Finally, the coupling performance of the high-efficiency SVCSN is studied by using the approximate modeling technology. Results show that the auxiliary injection increases the range between the two shock legs of the "k" shock wave induced by the secondary flow, then causes the separation zone and high-pressure boss of the down wall to expand upstream, and finally results in a prominent increase in the thrust vectoring performance. The thrust vectoring angle and Vectoring Efficiency (VE) of the high-efficiency SVCSN are about 61.6% and 75.7%, respectively, higher than those of the conventional SVCSN at NPR = 6. The effects of the NPR and the SPR on the thrust vectoring performance of the high-efficiency SVCSN are coupled with each other. A larger NPR matched with a smaller SPR shows better thrust vectoring performance. The maximum fluctuations in thrust vectoring angle and VE caused by the NPR and SPRare about 22% and 64%. The VE decreases monotonously with the increase of the secondary flow relative area. Smaller secondary flow injection angle shows better thrust vector performan

关键词： Shock vectoring control Serpentine nozzle Auxiliary injection Thrust vectoring performance Flow control

Surface characterization of ashtree wood meal by inverse gas chromatography

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Chinese Science Bulletin 2007年第9期52卷 1178-1181页

作者： ZHAO Shu LIN Xu SONG jingwei shi BaoLi Flame Materials Preparation and Molecule Design Key Laboratory of Heilongjiang Province Northeast Forestry University Harbin150040 China

Inverse gas chromatography(IGC) is a sensitive and convenient method to characterize surface prop-erties and thermodynamic parameters of solid materials. Surface properties of ashtree wood meal were determined by inverse gas chromatography in this work. The dispersive component of the surface free energy and acid-base parameters of the ashtree wood meal were characterized. The dispersive com-ponent of surface free energy was within 36―39 mJ/m2,the Lewis acidic number Ka was 0.53,and the basic number Kb was 0.21,respectively. The results show that ashtree is amphoteric and predominantly acidic wood.

关键词：水曲柳木粉填料表面特性反相气体色谱法

A fusion attitude determination method based on quaternion for MEMS gyro/accelerometer/magnetometer

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A fusion attitude determination method based on quaternion f...

第25届中国控制与决策会议

作者： Zhou Yongjie Zhang Haiyun ZhangTao Wang Leigang Ren Wei Luan Mengkai Liu Huifeng shi jingwei Tsinghua Space Center Tsinghua University Department of Automation School of Information Science and Technology Tsinghua University NEC Labs China

ISBN: (纸本)9781467355339

With the development of new technologies and market demand changing, MEMS gyroscope has been widely used. But low accuracy, large drift and other defects limit its application in some areas. This paper presents an attitude fusion algorithm based on the MEMS gyroscope, MEMS accelerometer and MEMS magnetometer. Firstly, the error model of the MEMS gyroscope was established, and rotation vector method to determine the gyro attitude was introduced. Then the state equation and observation equation of the designed Kalman filter was derived. Finally, experimental results illustrated the effectiveness of the fusion algorithm. That is, with the proposed fusion attitude determination algorithm, it is able to compensate gyro drift and provide a reliable and stable attitude for a long time.

关键词： MEMS gyro drift rotation vector method Kalman filter fusion attitude determination

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高校应急管理的困境、趋势与完善

江苏高教 2023年第5期 60-66页

作者：施婧葳华东政法大学经济法学院上海201620

随着风险社会的形成,高校所承担的应急职责的内容和范围不断扩张,但相应法律规范机制的不足,导致高校在应急管理体系中存在法理地位不明和权责模糊的问题。为应对此问题,高校多使用自主管理权来支撑应急管理。近年的实践中,高校在应急... 详细信息

随着风险社会的形成,高校所承担的应急职责的内容和范围不断扩张,但相应法律规范机制的不足,导致高校在应急管理体系中存在法理地位不明和权责模糊的问题。为应对此问题,高校多使用自主管理权来支撑应急管理。近年的实践中,高校在应急管理方面形成了特定趋势,即由单向职责转向二元结构,由先期处置转向合作治理,由教育管理转向社区维系。这些趋势和经验完成了对高校行政应急权的现实支撑和理论论证。在放管服改革的背景下,应进一步完善高校应急管理体系,制定高校应急相关法律规范,采用法律赋权的路径,构建和谐的外部关系和内部关系。

关键词：高校应急管理行政应急权高校应急职责

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高校应急职责的规范构造及其完善

首都师范大学学报（社会科学版） 2024年第3期 159-166页

作者：施婧葳华东政法大学经济法学院

我国应急管理体制采取授予政府以权力和课予社会主体以义务的权力义务模式,高校作为义务主体负有应急管理职责却没有应急管理职权。在实践中,高校通过用人单位管理权和教育管理权来履行应急管理职责。一方面,这种应急职责构造能够用来... 详细信息

我国应急管理体制采取授予政府以权力和课予社会主体以义务的权力义务模式,高校作为义务主体负有应急管理职责却没有应急管理职权。在实践中,高校通过用人单位管理权和教育管理权来履行应急管理职责。一方面,这种应急职责构造能够用来证成高校应急管理职权的合理性和正当性,却不能代替法律授权。这导致高校履行应急职责行为在理论和实践层面存在诸多问题。通过完善应急法律规范体系、确立分类分级授权原则和提升应急预案水平三种途径,可以有效化解高校应急职责的构造困境,提升高校应急管理的水平。

关键词：应急管理应急职责高校治理校园安全

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论过劳自杀的工伤认定

河南大学学报（社会科学版） 2022年第1期62卷 53-58,153,154页

作者：施婧葳中国人民大学法学院北京100872

过劳自杀是劳动者因职场压力过重而罹患精神疾患所导致的自杀,其作为一种特殊的“与职业相关联疾病”,在实践中频繁发生,严重威胁着劳动者的身心健康。过劳自杀是否可以纳入工伤救济是社会法的前沿问题之一。过劳自杀纳入工伤救济的核... 详细信息

过劳自杀是劳动者因职场压力过重而罹患精神疾患所导致的自杀,其作为一种特殊的“与职业相关联疾病”,在实践中频繁发生,严重威胁着劳动者的身心健康。过劳自杀是否可以纳入工伤救济是社会法的前沿问题之一。过劳自杀纳入工伤救济的核心问题是因果关系的认定,过劳自杀的工伤认定应当采用相当因果关系理论,从三个阶段予以认定,包括条件关系的判断、相当性的判断以及非工作因素的排除。

关键词：过劳自杀精神疾患工伤认定工作原因相当因果关系

Research of Water Quality Analysis,Treatment and Reuse Technology for Rainwater on the North University Campus

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Meteorological and Environmental Research 2018年第1期9卷 62-65页

作者： Chen Shufang shi jingwei Shao Yanjun Tu Chao The City College of Jilin Jianzhu University Changchun 130114 China

The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The results showed that due to some factors,such as the underlying surface material pollution,road materials,road surface pollution condition and surrounding atmospheric environment quality,the pollution of different underlying surface rainwater would be different. Main pollutants of rainwater runoff in the city campus area were such as COD,SS,NH;-N,TP,etc. Ultimately,along with the increase of accumulated rainfall,the pollutants tended to gradually decrease. The road rain pollution was more serious than roof runoff pollution and the early rain pollution was serious,but the late rain water quality was much better. According to the rainwater conditions,subsequent rainwater recycling technology and processing technology were determined as a way to alleviate the problem of water shortage and water pollution.

关键词： North Rainwater on campus Water quality analysis Variation rule Reuse technology

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三轴承矢量喷管红外辐射特性

航空动力学报 2022年第6期37卷 1195-1205页

作者：是介周莉史经纬王占学西北工业大学动力与能源学院西安710072

针对涡扇发动机用三轴承矢量喷管(3BSN),通过数值模拟的方法研究了在巡航和垂直起降(VTOL)状态即非矢量和90°矢量状态下三轴承矢量喷管的红外辐射空间分布特征,并分析了其影响机理。结果表明,在非矢量状态下由于特殊的几何型面使得喷... 详细信息

针对涡扇发动机用三轴承矢量喷管(3BSN),通过数值模拟的方法研究了在巡航和垂直起降(VTOL)状态即非矢量和90°矢量状态下三轴承矢量喷管的红外辐射空间分布特征,并分析了其影响机理。结果表明,在非矢量状态下由于特殊的几何型面使得喷管下壁面出现了局部高温区,喷流形状也变成椭圆锥形,造成垂直探测面上正探测角壁面红外辐射较负探测角最大增加44.6%,水平探测面上的燃气红外辐射大于垂直探测面;90°矢量状态下,由于偏转的喷管结构对前端高温部件的遮挡,总辐射峰值仅为非矢量状态的43.3%;喷管90°矢量偏转使得远离曲率中心一侧的气流速度降低温度升高,喷管外侧出现了大范围的局部高温区,导致垂直探测面负探测角范围的壁面辐射大于正探测角范围,最大相对差值达到71.9%。喷管偏转也遮挡了部分喷管内部的高温燃气,垂直探测面负探测角的仅能覆盖喷管出口处的高温燃气区域,明显小于正探测角,造成燃气辐射出现了20%的最大相对差值。

关键词：涡扇发动机三轴承矢量喷管垂直起降温度分布红外辐射特性

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基层行政飞地属地管理的空间治理——基于22个案例的扎根分析

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公共管理学报 2022年第3期19卷 136-146,175页

作者：高进石婧玮东北大学文法学院沈阳110169

基层行政飞地的属地管理是空间治理的难点问题,涉及飞地与飞出地、飞入地府际之间的竞争与博弈。为促使三者形成职能、权力、责任和利益的共同体,文章运用扎根理论和多案例研究方法,梳理归纳了行政飞地属地管理存在组织职能内卷化、权... 详细信息

基层行政飞地的属地管理是空间治理的难点问题,涉及飞地与飞出地、飞入地府际之间的竞争与博弈。为促使三者形成职能、权力、责任和利益的共同体,文章运用扎根理论和多案例研究方法,梳理归纳了行政飞地属地管理存在组织职能内卷化、权力归属竞争化、服务供给碎片化、利益政策差异化等空间壁垒。通过尺度政治分析工具从组织空间、府际空间、物质空间和表达空间四个空间层面,对行政飞地的属地管理进行了尺度解构。通过组织网络去边界化、府际互动去中心化、公共资源再领域化和话语表达多元化的尺度重构,完善了行政飞地属地管理的统筹规划机制、置换整合机制、沟通协商机制和利益补偿机制,再生产出行政飞地属地管理的空间治理机制,探索出基层政府飞地治理的新模式。

关键词：行政飞地属地管理空间壁垒空间尺度空间治理