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Journal of Thermal Science 1995年第3期4卷 193-199页

作者： jinliang Xu Tingkuan Chen Luwei Yang Institue of Nuclear Energy Technology Tsinghua University Beijing China National Lab. on Multiphase Flow Xi’an Jiaotong University China

The transient critical flow experiment with sharp-edged tubes as the break geometries is conducted in high pressure convective circulation test loop of Xi'an Jiaotong University. The initial steady operation pressure is up to ***. An empirical correlation was made to obtain the critical mass flow rates, the critical pressure ratio and the thermal nonequilibrium number were correlated as the functions of the tube length to tube diameter ratio L/D. The predicted critical mass now rate gets a higher accuracy for short tubes with L/D 12.

关键词： critical flow thermal nonequilibrium sharp-edged tubes.

Paleosalinity and lake level fluctuations of the 3rd Member of Paleogene Shahejie Formation,Chezhen Sag,Bohai Bay Basin

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Frontiers of Earth Science 2022年第4期16卷 949-962页

作者： Long SUN jinliang ZHANG Yang LI Xue YAN Xuecai ZHANG Faculty of Geographical Science Beijing Normal UniversityBeijing 100875China Hubei Key Laboratory of Petroleum Geochemistry and Environment Yangtze UniversityWuhan 430100China Oil and Gas Exploration Management Center Sinopec Shengli OilfieldDongying 257000China

The Chezhen Sag,located in the north-western Jiyang Depression,is one of the most important oil-bearing sags in the Bohai Bay *** to the low degree of exploration in the sag,paleosalinity and sedimentary environment of the sag in the 3rd Member of Paleogene Shahejie Formation(Es3)is not *** the paleosalinity and lake level fluctuations is helpful for understanding organic matter rich rocks ***,a detailed geochemical,mineralogical and paleontological analysis of the Es3 in the Chezhen Sag was *** like Sr/Ba ratios,B/Ga ratios,equivalent boron content and methods concluding Adams'formula and Couch's method were adopted to reveal the paleo-salinity and lake level *** results indicate that the lower submember(Lower Es3)was deposited in a salt water with high salinity,accompanied by dry climate and transgression *** middle submember(Middle Es3)and upper submember(Upper Es3)record a freshwater to brackish *** paleosalinity and paleoclimate changes are consistent with the global sea level *** type and content of sporopollen indicate a dry climate in Lower Es3,which further confirms the reliability of the reconstruction results of *** with the paleoclimate and previous marine paleontological evidence,we proposed that the high salinity period is associated with a high lake level and a large-scale transgression event in Lower *** to salinities and corresponding Lake depths,we established a sedimentary environment variation model of the Es3 Member in Chezhen Sag.

关键词： Chezhen Sag paleosalinity paleoclimate boron lake level

Braid-Delta Deposits from a Broad Shallow-Marine Setting: the Middle Member of the Kalpingtag Formation in the Central Tarim Basin

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Journal of Ocean University of China 2008年第2期7卷 145-153页

作者： JIANG Yiming ZHANG jinliang College of Marine Geology Ocean University of China Qingdao 266100 P. R. China

During the early Silurian, a transgressive and vast shallow sea with flat sea-floor covered the central Tarim Basin (the Tazhong area). The depositional environment of the middle member of the Kalpingtag Formation is controversial. In order to provide a basis for the prediction of reservoir sand, the sedimentary facies are recognized according to abundant core observations and de- scriptions combined with well-log analysis, isograms, seismic interpretations and regional sedimentary background. The middle member of the Kalpingtag Formation, which shows a retrograding sequence, is interpreted as braid-delta deposits influenced by mi- nor tidal reworking. The sources of clasts are from the southern uplift. The subaqueous braid-delta deposits in the study area have some characteristics quite different from the common deltas that generally deposit in marginal seas. Four facies grouped to a delta front association are recognized, ranging from distributary-channel (Facies A), front bar (Facies B), sand sheet (Facies C) and inter- distributary bay (Facies D). The distributary channels construct the sandbody framework of the delta front. Front bar deposits, which are fine-grained with low depositional dips, display a near-continuous sand strip around the entire periphery of the delta. Sand sheet deposits are mainly found in front of Facies B, gradationally contacting with the prodelta. The interdistributary bay is essentially the uppermost unit capping the channel sequence and generally made up of laminated and massive mudstones. The delta front deposits display extensive sheet-like bodies contrasting with the characteristic wedge shapes of common subaqueous delta bodies. The bi- modal cross-stratification and mud drapes in the fine- to medium-grained sandstone in the distal area are inferred to reflect high-energy tidal processes.

关键词： Tazhong area Silurian Kalpingtag Formation shallow sea braid delta

Modeling and analyzing dynamics of malaria transmission with host immunity

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International Journal of Biomathematics 2019年第6期12卷 247-270页

作者： Li-Ming Cai Zhaoqing Li jinliang Liu School of Mathematics and Statistics Xinyang Normal University Xinyang 464000 P.R.China

In this paper,we investigate a compart mental model for malaria transmission,where the host individuals are distributed according to their immune *** acquired immu nity of malaria is usually booted upon each exposure and gradually declines between the consecutive bouts of the *** is assumed that the recovered host individuals may be reinfected due to the immunity waning over *** existence and stability of equilibria in the system,and the effect of the immunity status on dynamics of the system,are investigated,*** phenomena of multiple endemic equilibria in our model are also *** obtained results show that malaria may keep recurring under the first lower prevalence,however,when malaria is spreading in a population,it may remain at a different endemic level under suitable control strategies.

关键词： Malaria host immunity subthreshold endemic equilibria stability

USE THE EQUATIONS OF TOTAL PRESSURE AND VELOCITY TO SOLVE THE VISCOUS INCOMPRESSIBLE FLOW IN THE CHANNEL

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Journal of Hydrodynamics 1993年第1期5卷 63-69页

作者： Jiang, jinliang Shanghai Inst of Electric Power Shanghai China

This paper presents a new method to numerically solve the viscous incompress- ible steady flow in a channel with non-uniform section by use of the equations of total pressure and *** method is to solve the equations o... 详细信息

关键词： viscous flow incompressible flow channel with non-uniform section

LoS sensing-based superimposed CSI feedback for UAV-assisted mmWave systems

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Chinese Journal of Aeronautics 2023年第12期36卷 349-360页

作者： Chaojin QING Qing YE Wenhui LIU Zilong WANG Jiafan WANG jinliang CHEN School of Electrical Engineering and Electronic Information Xihua UniversityChengdu 610039China School of Aeronautics and Astronautics Xihua UniversityChengdu 610039China

In Unmanned Aerial Vehicle(UAV)-assisted millimeter Wave(mmWave)systems,Channel State Information(CSI)feedback is critical for the selection of modulation schemes,resource management,beamforming,***,traditional CSI feedback methods lead to significant feedback overhead and energy consumption of the UAV transmitter,therefore shortening the system operation *** tackle these issues,inspired by superimposed feedback and Integrated Sensing and Communications(ISAC),a Line of Sight(LoS)sensing-based superimposed CSI feedback scheme is ***,on the UAV transmitter side,the Ground-to-UAV(G2U)CSI is superimposed on the UAV-to-Ground(U2G)data to feed back to the ground Base Station(gBS).At the gBS,the dedicated LoS Sensing Network(LoS-SenNet)is designed to sense the U2G CSI in LoS and NLoS *** the sensed result of LoS-SenNet,the determined G2U CSI from the initial feature extraction will work as the priori information to guide the subsequent ***,for the G2U CSI in NLoS,a CSI Recovery Network(CSI-RecNet)and superimposed interference cancellation are developed to recover the G2U CSI and U2G *** for the LoS scenario,a dedicated LoS Aid Network(LoS-Aid Net)is embedded before the CSI-RecNet and the block of superimposed interference cancellation to highlight the feature of the G2U *** with other methods of superimposed CSI feedback,simulation results demonstrate that the proposed feedback scheme effectively improves the recovery accuracy of the G2U CSI and U2G ***,against parameter variations,the proposed feedback scheme presents its robustness.

关键词： Channel State Information(CSI) Integrated Sensing and Communications(ISAC) Line of Sight(LoS)sensing Superimposed CSI feedback Unmanned Aerial Vehicle(UAV)-assisted millimeter Wave(mmWave)systems

Cu segregation and its effects on the electrical properties of calcium copper titanate

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Science China(Technological Sciences) 2011年第9期54卷 2506-2510页

作者： HE jinliang LUO FengChao HU Jun LIN YuanHua State Key Laboratory of Power Systems and Department of Electrical Engineering Tsinghua University Beijing 100084 China State Key Laboratory of New Ceramics and Fine Processing and Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

By sintering CaCu3Ti4O12ceramics at different temperatures and testing the samples＇ properties, the segregation behavior of Cu and its effects were carefully studied. As the temperature rises, CuO segregates to the grain boundaries and gradually volatilize. Complete decomposition and volatilization occur at 1150℃. The behavior of CuO is found to be closely related to the formation of the grain boundary barrier, as well as the acquirement and evolution of the electrical properties, which are revealed in the research.

关键词： CaCll3Ti4012 Cu segregation electrical properties

A review of the thermal stability of metastable austenite in steels:Martensite formation

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Journal of Materials Science & Technology 2021年第32期91卷 200-214页

作者： Yong Li David San Martín jinliang Wang Chenchong Wang Wei Xu State key laboratory of rolling and automation Northeastern UniversityShenyang 110819China Materalia Research Group Centro Nacional de Investigaciones Metalúrgicas(CENIM-CSIC)Avda Gregorio del Amo 8Madrid E-28040Spain School of Mechanical and Power Engineering Guangdong Ocean UniversityZhanjiang 524088China

Metastable austenite plays a critical role in achieving improved combinations of high strength and high ductility/toughness in the design of advanced high-strength steels(AHSS). The thermal stability of metastable austenite determines the transformation characteristics of AHSS and thus primarily determines the microstructure evolution during complex processes, e.g., the quenching and partitioning process, to achieve the desirable microstructure. This study provides a review of the thermal stability of austenite and its influence on martensitic transformation from both experimental and theoretical modeling perspectives. From the experimental perspective, factors affecting the thermal stability are analyzed,the relative sensitivities are compared, and their corresponding mechanisms are discussed. From the theoretical modeling perspective, the most representative kinetic models that describe athermal and isothermal martensitic transformation are reviewed. The advantages, shortcomings, and applicability of each model are discussed. The systematic review of both experimental and theoretical aspects reveals critical factors in tailoring the stability of metastable austenite and, therefore, provides guidance for the design of advanced steels.

关键词： Austenite Thermal stability Martensitic transformation Kinetic models

A New Structure of Cooling Wall Tube for Supercritical CO_(2)Coal-Fired Power Plants

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Journal of Thermal Science 2023年第3期32卷 1239-1250页

作者： WANG Yanjuan GAO Shuo JIANG Qiongqiong LI Yi LIU Qibin XU jinliang The Beijing Key Laboratory of Multiphase Flow and Heat Transfer North China Electric Power UniversityBeijing 102206China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

In terms of developing supercritical CO_(2)(sCO_(2))coal-fired power plants,enhancing cooling wall performance is one of significant factors to improve system *** this paper,a new cooling wall tube structure is proposed to match the non-uniform heat flux(NUH)with the thermal resistance by changing the cooling wall tube eccentricity.A three-dimensional multi-physical coupling model of cooling wall is constructed to compare the novel structure to the conventional *** properties of fluid dynamics,thermal stress,coupled heat transfer and cooling wall deformation are *** contrast to the traditional structure,the maximum temperature and circumferential temperature difference(CTD)of the proposed structure can be reduced by 2%and 27.4%,*** essential working parameters related to the performances of the cooling wall tube are *** maximum temperature of the new structure is reduced by 8-13 K and the maximum thermal stress is reduced by about 10%-15%under all the simulated working conditions when the eccentricity changes from 0 to *** proposed structure can effectively reduce the maximum temperature and circumferential temperature gradient under ***,a novel insight is put out for the design and optimization of the cooling wall tube in coal-fired power plants.

关键词： supercritical carbon dioxide cooling wall tube thermal-hydraulic structural coupling supereritical heat transfer

Energy dissipation caused by boundary resistance in a typical reach of the lower Yellow River and the implications for riverbed stability

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Journal of Geographical Sciences 2022年第11期32卷 2311-2327页

作者： XU Haijue LI Yan HUANG Zhe BAI Yuchuan ZHANG jinliang State Key Lab.of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China Institute for Sediment River and Coast EngineeringTianjin UniversityTianjin 300072China Yellow River Engineering Consulting Co. Ltd.Zhengzhou 450003China

The energy dissipation of boundary resistance is presented in this paper based on the flow ***,the river morphology responses to the resistance energy dissipation are explored using the Gaocun-Taochengpu reach in the lower Yellow River as a *** analysis,measured data analysis and a one-dimensional hydrodynamic model are synthetically used to calculate the energy dissipation rate and riverbed morphological *** results show that the energy dissipation rate along the channel will increase in both the mean value and the fluctuation intensity with increasing ***,the energy dissipation rate will first decrease and then increase as the flow section or width-depth ratio *** addition,the energy dissipation rate has a significant positive correlation with the riverbed stability *** results imply that the water and sediment transport efficiency of the river channel can be improved by optimizing the cross-sectional configuration to fulfil the minimum energy dissipation rate of the boundary resistance under stable riverbed conditions.

关键词： energy dissipation rate boundary resistance riverbed stability numerical simulation lower Yellow River