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| 1 | Visualization Experiments of a Specific Fuel Flow Through Quartz-glass Tubes Under both Sub- and Supercritical Conditions显示文摘The present work is a visualization study of a typical kerosene (RP-3) flowing through vertical and horizontal quartz-glass tubes under both suband supercritical conditions by a high speed camera. The experiments are accomplished at temperatures of 300-730 K under pressures from 0.107-5 MPa. Six distinctive two-phase flow patterns are observed in upward flow and the critical point of RP-3 is identified as critical pressure pc=2.33 MPa and critical temperature Tc=645.04 K and it is found that when the fluid pressure exceeds 2.33 MPa the flow can be considered as a single phase flow. The critical opalescence phenomenon of RP-3 is observed when the temperature is between 643.16 K and 648.61 K and the pressure is between 2.308 MPa and 2.366 MPa. The region filled by the critical opalescence in the upward flow is clearly larger than that in the downward flow due to the interaction between the buoyancy force and fluid inertia. Morecover, obvious layered flow phenomenon is observed in horizontal flow under supercritical pressures due to the differences of gravity and density. | DENG Hongwu ZHANG Chunben XU Guoqiang TAO Zhi ZHU Kun WANG Yingjie | 2012 | Chinese Journal of Aeronautics2012，25，3： | 18 |
| 2 | Large-eddy simulation of the generation and propagation of internal solitary waves显示文摘A modified large-eddy simulation model,the dynamic coherent eddy model(DCEM)is employed to simulate the generation and propagation of internal solitary waves(ISWs)of both depression and elevation type,with wave amplitudes ranging from small,medium to large scales.The simulation results agree well with the existing experimental data.The generation process of ISWs is successfully captured by the DCEM method.Shear instabilities and diapycnal mixing in the initial wave generation phase are observed.The dissipation rate is not equal at different locations of an ISW.ISW-induced velocity field is analyzed in the present study.The structure of the bottom boundary layer(BBL)of internal wave packets is found to be different from that of a single ISW.A reverse boundary jet instead of a separation bubble exists behind the leading internal wave while separation bubbles appear in other parts of the wave-induced velocity field.The boundary jet flow resulting from the adverse pressure gradients has distinctive dynamics compared with free shear jets. | ZHU Hai WANG LingLing TANG HongWu | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，6： | 6 |
| 3 | Investigation of flow resistance characteristics of endothermic hydrocarbon fuel under supercritical pressures显示文摘The characteristics of flow resistance of a typical hydrocarbon fuel(RP-3)flowthrough adiabatic horizontal miniature tubes at supercritical pressures are experimentallyinvestigated for both laminar and turbulent flow.The experiments are conducted by using along tube measuring section and a short tube measuring section simultaneously in order toeliminate the effect of local pressure drop.In these experiments,the temperature of RP-3changes from(295 to 789)K and the reduced pressure(P/Pc,Pc=2.33 MPa)ranges from 1 to2.58,the mass flux is up to 1572.7 kg/(m^(2).s).Test results indicate that frictional pressuredrops for various supercritical pressures at the same mass flux can be considered as equalwith each other when the reduced temperature Tb/Tpc<0.95.When Tb/Tpc>0.95,differenceappears and increases with the increase of Tb/Tpc.Additionally,the friction factor(f)of thesupercritical fluid for turbulent flow has a critical value at Tb/Tpc=1,the values of f at thispoint for all pressures and mass fluxes are equal with each other.Moreover,at the same massflux,there are two comresponding friction factors for the same Re,one is in the region of Tb/Tpc<1,the other is in the region of Tb/Tpc> 1.Finally, classical conelations of frictionfactor is inapplicable when Tb/Tpc>0.95 at supercritical pressure and a new coelation hasbeen obtained based on the experimental data. | Chunben Zhang Guoqiang Xu Hongwu Deng Kun Zhu | 2013 | Propulsion and Power Research2013，2，2： | 6 |
| 4 | Research on Pick-up Feature of ESP Recording Charts Based on Bitmap Images显示文摘During the oil production, in order to monitor the working conditions of an electrical submersible pump (ESP), an electrical current recorder is used to monitor the electric motor current of an ESP. The recorder charts indicate various working conditions of the ESP. Subtle malfunctions or abnormal problems of the ESP can be detected and further analyzed from various features of these current curves on the recording charts. Presently, these current charts are manually read and analyzed in oil fields. In this paper, a diagnosis expert system is presented for automatically analyzing these current recording charts and identifying the working condition of the ESP. This expert system includes an open knowledge base, which can be updated or enriched according to the identified features of the current curves on the recording charts, and a condition monitoring and failure pattern recognition method, which is called 'pick-up method of feature of the recording chart', and can be correctly applied in most cases. It has been shown that this expert system can effectively improve the accuracy and efficiency of failure diagnosis and working condition monitoring of ESPs. | Feng Ding Tu Yiliu Zhu Hongwu Xue Dunsong | 2005 | Petroleum Science2005，2，3： | 5 |
| 5 | Numerical Simulation of Rotating Stall in a Centrifugal Compressor with Vaned Diffuser显示文摘这份报纸与 vaned 在一台离心的压缩机向旋转货摊从正常操作条件在这个过程上汇报数字研究更弥漫。目的更好在在离心的 impeller 和 vaned 之间的相互作用下面在货摊点附近理解流动特征更弥漫。数字结果证明在就先于货摊点的某些条件下面,尖端漏旋涡开始波动在粗略地过去的片的一半频率。这现象类似于在轴的压缩机的旋转不稳定性。与流动,率进一步减少了 impeller 货摊并且五个货摊房间在旋转速度被发现的 85% impeller 的频率宣传。 | Weiguang Huang Shaojuan Geng Junqiang Zhu Hongwu Zhang | 2007 | Journal of Thermal Science2007，16，2： | 4 |
| 6 | Numerical Investigation of a High-subsonic Axial-flow Compressor Rotor with Non-axisymmetric Hub Endwall显示文摘The major source of loss in modern compressors is the secondary loss.Non-axisymmetric endwall profile contouring is now a well established design methodology in axial flow turbines.However,flow development in axial compressors is differ from turbines,the effects of non-axisymmetric endwall to axial compressors requires flow analysis in detail.This paper presents both experimental and numerical data to deal with the application of a non-axisymmetric hub endwall in a high-subsonic axial-flow compressor.The aims of the experiment here were to make sure the numerically obtained flow fields is the physical mechanism responsible for the improvement in efficiency,due to the non-axisymmetric hub endwall.The computational results were first compared with available measured data of axisymmetric hub endwall.The results agreed well with the experimental data for estimation of the global performance.The coupled flow of the compressor rotor with non-axisymmetric hub endwall was simulated by a state-of-the-art multi-block flow solver.The non-axisymmetric hub endwall was designed for a subsonic compressor rotor with the help of sine and cosine functions.This type of non-axisymmetric hub endwall was found to have a significant improvement in efficiency of 0.45% approximately and a slightly increase for the total pressure ratio.The fundamental mechanisms of non-axisymmetric hub endwall and their effects on the subsonic axial-flow compressor endwall flow field were analyzed in detail.It is concluded that the non-axisymmetric endwall profiling,though not optimum,can mitigate the secondary flow in the vicinity of the hub endwall,resulting in the improvement of aerodynamic performance of the compressor rotor. | Shuzhen Hu Xingen Lu Hongwu Zhang Junqiang Zhu Qiang Xu | 2010 | Journal of Thermal Science2010，19，1： | 4 |
| 7 | Distinctive expression patterns and roles of the miRNA393/TIR1 homolog module in regulating flag leaf inclination and primary and crown root growth in rice ( Oryza sativa )显示文摘 | Hongwu Bian Yakun Xie Fu Guo Ning Han Shengyun Ma Zhanghui Zeng Junhui Wang Yinong Yang Muyuan Zhu | 2012 | New Phytologist2012，，1： | 1 |
| 8 | Liver TCRγδ + CD3 + CD4 ? CD8 ? T cells contribute to murine hepatitis virus strain 3-induced hepatic injury through a TNF-α-dependent pathway显示文摘 | Yulei Lu Xiaojing Wang Weiming Yan Hongwu Wang Ming Wang Di Wu Lin Zhu Xiaoping Luo Qin Ning | 2012 | Molecular Immunology (-)2012，，3： | 1 |
| 9 | Upregulated FoxM1 expression induced by hepatitis B virus X protein promotes tumor metastasis and indicates poor prognosis in hepatitis B virus-related hepatocellular carcinoma显示文摘 | Limin Xia Wenjie Huang Dean Tian Hongwu Zhu Yongguo Zhang Hao Hu Daiming Fan Yongzhan Nie Kaichun Wu | 2012 | Journal of Hepatology2012，，3： | 1 |
| 10 | Experimental investigation on heat transfer of a specific fuel (RP-3) flows through downward tubes at supercritical pressure显示文摘 | Chunben Zhang Guoqiang Xu Lin Gao Zhi Tao Hongwu Deng Kun Zhu | 2012 | The Journal of Supercritical Fluids2012，，： | 1 |
| 11 | The biodiversity and composition of the dominant fecal microbiota in patients with inflammatory bowel disease显示文摘 | Sumei Sha Bin Xu Xin Wang Yongguo Zhang Honghong Wang Xiangyun Kong Hongwu Zhu Kaichun Wu | 2012 | Diagnostic Microbiology & Infectious Disease2012，，： | 1 |
| 12 | Multi-objec-tive shape optimization of helico-axial multiphase pumpimpeller based on NSGA-II and ANN 显示文摘 | Zhang Jinya Zhu Hongwu Li Yan | 2011 | Energy Con-version and Management2011，52，1： | 1 |
| 13 | Multi-objective shape optimization of helico-axial multiphase pump impeller based on NSGA-II and ANN显示文摘 | Zhang Jinya Zhu Hongwu Yang Chun | 2011 | Energy Conversion and Management2011，52，1： | 1 |
| 14 | Auxin signaling module OsSK41-OsIAA10-OsARF regulates grain yield traits in rice显示文摘Auxin is an important phytohormone in plants, and auxin signaling pathways in rice play key roles in regulating its growth, development, and productivity. To investigate how rice grain yield traits are regulated by auxin signaling pathways and to facilitate their application in rice improvement, we validated the functional relationships among regulatory genes such as OsIAA10, OsSK41, and OsARF21 that are involved in one of the auxin(OsIAA10) signaling pathways. We assessed the phenotypic effects of these genes on several grain yield traits across two environments using knockout and/or overexpression transgenic lines.Based on the results, we constructed a model that showed how grain yield traits were regulated by OsIAA10 and OsTIR1, OsAFB2, and OsSK41 and OsmiR393 in the OsSK41-OsIAA10-OsARF module and by OsARF21 in the transcriptional regulation of downstream auxin response genes in the OsSK41-OsIAA10-OsARF module. The population genomic analyses revealed rich genetic diversity and the presence of major functional alleles at most of these loci in rice populations. The strong differentiation of many major alleles between Xian/indica and Geng/japonica subspecies and/or among modern varieties and landraces suggested that they contributed to improved productivity during evolution and breeding. We identified several important aspects associated with the genetic and molecular bases of rice grain and yield traits that were regulated by auxin signaling pathways.We also suggested rice auxin response factor(OsARF) activators as candidate target genes for improving specific target traits by overexpression and/or editing subspecies-specific alleles and by searching and pyramiding the ‘best' gene allelic combinations at multiple regulatory genes in auxin signaling pathways in rice breeding programs. | Fuying Ma Fan Zhang Yu Zhu Dengyong Lan Peiwen Yan Ying Wang Zejun Hu Xinwei Zhang Jian Hu Fuan Niu Mingyu Liu Shicong He Jinhao Cui Xinyu Yuan Ying Yan Shujun Wu Liming Cao Hongwu Bian Jinshui Yang Zhikang Li Xiaojin Luo | 2023 | Journal of Integrative Plant Biology2023，65，7： | 1 |
| 15 | Isobaric specific heat capacity measurement for kerosene RP-3in the near-critical and supercritical regions显示文摘 | DENG Hongwu ZHU Kun XU Guoqiang | 2012 | Journal of Chemical&Engineering Data2012，57，2： | 1 |
| 16 | cDNA cloning and expression of ghrelin in giant panda (Ailuropoda melanoleuca)显示文摘 | Qinggang Xu Hongwu Bian Ning Han Rong Hou Zhihe Zhang Muyuan Zhu | 2010 | Molecular Biology Reports2010，，6： | 1 |
| 17 | Os- cillation for nonautonomous neutral dynamic delay e- quations on time scates显示文摘 | LIU Ailian WU Hongwu ZHU Siming | 2006 | Aeta Mathematiea Seien-tia2006，26，1： | 1 |
| 18 | A Numerical Study of Flow Field and Oil Water Separation in Vertical Deadlegs显示文摘 | Kuang Ding Hongwu Zhu Jinya Zhang | 2012 | Applied Mechanics and Materials2012，，： | 1 |
| 19 | Activating transcription factor 4 mediates a multidrug resistance phenotype of esophageal squamous cell carcinoma cells through transactivation of STAT3 expression显示文摘 | Hongwu Zhu Xiong Chen Bin Chen Bei Chen Jianyong Fan Weibing Song Ziying Xie Dan Jiang Qiuqiong Li Meihua Zhou Dayong Sun Yagang Zhao | 2014 | Cancer Letters2014，，1： | 1 |
| 20 | Multi-objective shape optimization of helico-axial multiphase pump impeller based on NSGA-II and ANN显示文摘 | Jinya Zhang Hongwu Zhu Chun Yang Yan Li Huan Wei | 2010 | Energy Conversion and Management2010，，1： | 1 |
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