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| 1 | Application of Tandem Cascade to Design of Fan Stator with Supersonic Inflow显示文摘This article proposes a tandem cascade constructed to tackle the thorny problem of designing the high-loaded stator with a supersonic inflow and a large turning angle.The front cascade adopts a supersonic profile to reduce the shock wave intensity turning the flow into subsonic,while the rear cascade adopts a subsonic profile with a large camber offering the flow a large turning angle.It is disclosed that the losses would be minimized if the leading edge of the rear cascade lies close to the pressure side of the front cascade at a distance of 20% pitch in pitch-wise direction without either axial spacing or overlapping in axial direction.The 2D numerical test results show that,with the inflow Mach number of 1.25 and the turning angle of 52°,the total pressure loss coefficient of the tandem cascade reaches 0.106,and the diffusion factor 0.745.Finally,this article has designed and simulated a high-loaded fan stage with the proposed tandem stator,which has the pressure ratio of 3.15 and the efficiency of 86.32% at the rotor tip speed of 495.32m/s. | Li Qiushi,Wu Hong,Zhou Sheng School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing 100191,China | 2010 | Chinese Journal of Aeronautics2010，23，1： | 9 |
| 2 | Application and Comparison of SST Model in Numerical Simulation of the Axial Compressors显示文摘The shear-stress transport(SST)turbulence model is incorporated into Navier-Stokes equations to simulate a turbomachinery flowfield.A staggered finite volume method is used to make the mean flow equations and turbulence model equations strongly coupled and enhance the stability of the numerical computation.The implicit treatment of the source terms is applied to the SST model.A steady state solution is obtained using five-stage Runge-Kutta time-stepping scheme with local time stepping and residual smoothing to accelerate convergence. The wall distance d,a key parameter in the SST model,is solved by a partial differential equation.The validations of the code are conducted on rotor 37,wp11 at design and off-design conditions by comparison with measurements and the Spalart-Allmaras(SA)turbulence model.The flow within the tip is calculated with a multi-block grid. | YIN Song~1,JIN Donghai~2,GUI Xingmin~3 and ZHU Fang Aero-Engines Simulation Research Center,School of Jet Propulsion,Beijing University of Aeronautics and Astronautics, Beijing,100191,China | 2010 | Journal of Thermal Science2010，19，4： | 7 |
| 3 | 儿童NTRK重排间叶源性肿瘤临床病理学观察显示文摘目的:探讨儿童NTRK重排间叶源性肿瘤临床和病理学特征,以提高对该类疾病的认识。方法:收集上海交通大学医学院附属上海儿童医学中心及新加坡KK Women′s and Children′s Hospital从2017年1月至2019年9月5例手术切除标本,采用EnVision法检测免疫组织化学表型,荧光原位杂交(FISH)检测相关基因并对NTRK基因重排进行克隆性分析。结果:该组5例患儿,3例男性,2例女性。年龄从3个月到13岁,部位包括软组织(膝、胸腔、腹壁)和肾,肿瘤大小为4.5~12.5 cm。组织学检查主要呈梭形细胞肿瘤,浸润性生长,可伴有炎性细胞。免疫表型上,肿瘤细胞阳性表达Pan-TRK,分子检测均存在NTRK基因重排,包括DCTN1-NTRK1的发现。除2例目前接受靶向药物治疗,其余均为无疾病进展病例,随访时间9~29个月。结论:NTRK重排间叶源性肿瘤,其肿瘤发生部位广泛,组织学图像多变。免疫组织化学Pan-TRK可以帮助诊断,NTRK基因检测确认其存在重排是诊断的金标准,对不能完整切除或有复发、转移病例建议靶向药物治疗。 | 殷敏智 马靖 何巧 沈萍 陈洁枫 金晓婷 张忠德 Chik Hong Kuick Chen Huiyi Eileen Hui Qi Ng Sze Jet Aw Kenneth Tou En Chang | 2020 | 中华病理学杂志2020，49，7： | 6 |
| 4 | A numerical simulation on the infrared radiation of hot exhausting nozzles with a coupled flow and heat transfer model显示文摘A coupled model among flow field,solid temperature,species concentration and gas radiation,which was based on statistical narrow-band correlated-k model,was employed to predict the infrared radiations from hot exhausting nozzles. The parameters of narrow-band model were deduced from HITEMP line-by-line database. Several methods to increase computational efficiency and to save computational resources were employed,thus all the complicated computations could be operated on a personal computer. The predictions for three cases have been conducted to validate the accuracy of the methods mentioned above,including the temperature distribution of a water-cooling nozzle in rocket engines,the carbon dioxide absorptivity at the wavelength of 4.3 micron and the infrared radiation of a cylindrical furnace. Finally,the aerothermodynamic and infrared characteristics of two nozzles were predicted. It was shown that the infrared radiation intensity of chevron ejecting nozzle were obviously smaller than that of common axisymmetric convergent-divergent nozzle. | HU HaiYang1 & WANG Qiang2 1 China Academy of Aerospace Aerodynamics, Beijing 100074, China 2 School of Jet Propulsion, Beihang University, Beijing 100191, China | 2010 | Science China(Technological Sciences)2010，53，10： | 6 |
| 5 | Frequency control ancillary service provided by a wind farm:dual-BESS scheme显示文摘Network frequency control function is incorporated into a grid-connected wind farm-dual battery energy storage system(BESS)scheme.The design of the scheme takes advantage of the rapid response characteristics of the BESS and the in-built short-term overloading capability of the associated power conversion devices.A control strategy to regulate the BESS output power is then proposed.It is shown that the frequency control action offered by the BESS complements amicably with that of conventional generators in enhancing the frequency regulation attribute of the grid system. | Dailin YAO San Shing CHOI King Jet TSENG Tek Tjing LIE | 2014 | Journal of Modern Power Systems and Clean Energy2014，2，2： | 4 |
| 6 | Blockage effect on the flow around a cylinder probe in calibration显示文摘Flow around a 2-D cylinder pressure probe placed in uniform flow,free jet flow,and wind tunnel flow was analyzed with potential flow theory and simulated with numerical method.Blockage effect was investigated under several typical flow Mach numbers.The result from numerical simulation shows a similar trend to the one from potential flow method while varies in quantity.Wind tunnel walls accelerate the flow near the probe and thus produce a blockage effect;Boundary of free jet flow,however,decelerates the flow and thus produces a 'negative' blockage effect.A maximum incoming Mach number exists when the probe is calibrated in wind tunnel in high subsonic condition due to choking caused by shocks and shock induced separation.The critical Mach number varies with blockage ratio,which makes high Mach number impossible to achieve in large blockage ratio condition.The blockage effect itself is unavoidable for calibration or measurement although a sufficiently small blockage ratio brings minor effect.Correction can be implemented based on the numerical simulation result presented in this paper and further works. | WANG Hong-wei,WEI Jun (National Key Laboratory on Aero-Engines,School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing 100083) | 2007 | 航空动力学报2007，22，7： | 3 |
| 7 | 铁路化工罐车的高压水射流清洗显示文摘介绍了铁路化工罐车的高压水射流清洗系统构成和工作原理.确定了影响高压水射流清洗铁路化工罐车质量的基本参数.对高压水射流清洗工艺与传统的蒸洗工艺作了对比,说明了高压水射流清洗工艺效率高、清洗质量好。 | High Pressure Water Jet Cleaning Research Group, Engineering Institute of Chemical Defence (Engineering Institute of Chemical Defence, Beijing 102205) | 1998 | 化学清洗1998，14，6： | 3 |
| 8 | Local heat transfer measurements on a rotating flat blade model with a single film hole显示文摘An experimental study was performed to measure the heat transfer coeffcient distributions on a flat blade model under rotating oper-ating conditions. A steady-state thermochromic liquid crystal technique was employed to measure the surface temperature, and all the signals from the rotating reference frame were collected by the telemetering instrument via a wireless connection. Both air and CO2 were used as coolant. Results show that the rotational effect has a significant influence on the heat transfer coeffcient distributions. The pro-files of hg/h0, which is the ratio of heat transfer coeffcient with film cooling to that without film cooling, deffect towards the high-radius locations on both the pressure surface and suction surface as the rotation number (Rt) increases, and the deffective tendency is more evident on the suction surface. The variations in mainstream Reynolds number (ReD) and blowing ratio (M) present different distribu-tions of hg/h0 on the pressure and suction surfaces, respectively. Furthermore, the coolant used for CO2 injection is prone to result in lower heat transfer coeffcients. | Guoqiang Xu, Bin Yang*, Zhi Tao, Zhenming Zhao, Hongwei Wu National Key Laboratory on Aero-Engines, School of Jet Propulsion, Beihang University, Beijing 100083, China | 2009 | Progress in Natural Science:Materials International2009，19，3： | 3 |
| 9 | Microstructure Transition and Grain Refinement Mechanism of Undercooled Alloys显示文摘The solidification microstructures of undercooled Ni90Cu10 alloys under different undercoolings were studied systematically by means of melt coating and cyclic superheating.In the obtained undercooling range,the solidification structures of the two undercooled alloys have similar transformation processes,and there are two kinds of grain refinement structures under the conditions of low undercooling and high undercooling,respectively.The microstructures of the two grain refinement processes were analyzed in more detail by electronic backscattering diffraction technique.Under the condition of small undercooling,dendrite remelting is considered to be the main reason of grain refinement.However,under the condition of high undercooling,the existence of annealing twins and obvious migration of grain boundary are important evidences for the occurrence of recrystallization process. | 李洪涛 Nancy Julius Siambun Bih-Lii Chuab Melvin Gan Jet Hong 安红恩 | 2021 | Journal of Wuhan University of Technology(Materials Science)2021，36，6： | 3 |
| 10 | 敬业要从领导开始显示文摘作为个体的领导对员工敬业度的影响比作为一个整体的企业还要大,而敬业的员工能够带来忠诚的客户。 | Jet Magsaysay 麦捷思 | 2007 | 中国电力企业管理2007，，2： | 2 |
| 11 | Selective antagonism of the hepatic glucocorticoid receptor reduces hepatic glucose production显示文摘 | Edgerton D S Jacobson P B Opgenorth T Jet cd | 2006 | Metabolism2006，55，9： | 1 |
| 12 | Does curve veering occur in the eigenvalue problem of rotors显示文摘 | Jet Y G Lee C W | 1992 | ASME J Vib Acous1992，114，： | 1 |
| 13 | Distributed Localization in Wireless Sensor Networks : a Quantitative Comparison 显示文摘 | Koen Langendoen Niels Rei jets | 2003 | Computer Networks2003，43，： | 1 |
| 14 | hnpaet of microbial transformation of food on health-from fermented foods to fermentation in the gastro-intestinal tract 显示文摘 | Van Hylckama Vlieg JET Veiga P Zhang C | 2011 | Current Opinion in Bioteehnology2011，22，： | 1 |
| 15 | All-Silica Single-Mode Optical Fiber with Photonic Crystal Cladding显示文摘 | Knight J C Birks T A Russell P St Jet ol | 1996 | Optics Letters1996，21，19： | 1 |
| 16 | Correlation between Re- flux and multiehannel intraluminal impedance pH monitoring in un- treated volunteers显示文摘 | Jet~ ME Gaumnitz EA Birehall MA | 2014 | The Laryngoscope2014，，： | 1 |
| 17 | Palate cleft显示文摘 | Loffredo LC Souza JM Freitas Jet | 2002 | Craniofac J2002，43，1： | 1 |
| 18 | Incidence and risk factors for severe hepatotoxicity associated with antiretroviral combination therapy显示文摘 | Wit FWNM Weverling GJ Weel Jet al | 2002 | J Infect Dis2002，186，： | 1 |
| 19 | Fractionation of squid vis- ceral oil ethyl esters by short -path distillation显示文摘 | Liang Jet - hour H wang Jucy - Sun | 2000 | Journal of the American Oil Chemists and Society2000，77，7： | 1 |
| 20 | Tackling matrix effects during development of a liquid chromatographic–electrospray ionisation tandem mass spectrometric analysis of nine basic pharmaceuticals in aqueous environmental samples显示文摘 | Jet C. Van De Steene Kjell A. Mortier Willy E. Lambert | 2006 | Journal of Chromatography A2006，，1： | 1 |
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