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| 1 | SEDIMENT TRANSPORTED BY DEBRIS FLOWTO THE LOWER JINSHA RIVER显示文摘The lower Jinsha River is an area with the highest sediment yield in the upper Yangze basin. Itcovers only 9.27% of the total area of the basin but supplies about 40% of the total sediment recordedat the Yichang Hydrological Station. The present study shows that besides strong slope erosion andwaste discharge from engineering works, debris-flow transport is an important source of the sedimentload in the river. Based on field investigation and measurement, the annual sediment transport intothe lower Jinsha River basin was estimated at 1.54×10 to 67.07×10. | CUI Peng1 WEI Fangqiang2 and LI Yong3(1 Prof. Dongchuan Debris Flow Observation and Research Station. Institute of Mountain Hazards and Environment,CAS, Chengdu 610041. China.)(2 Ph.D. student, Institute of Mountain Hazards and Environment, CAS. and Sou | 1999 | International Journal of Sediment Research1999，14，4： | 19 |
| 2 | Particle size characterization by ultrasonic attenuation spectra显示文摘This paper contributes to extracting information from signals of broadband ultrasonic attenuation spectrum for effective utilization in particle size characterization. The single particle scattering model and the coupled-phase model are formulated simultaneously, the relationship between particle size distribution and ultrasonic spectrum is established, and a convergence criterion for calculation is quantified. Demonstration inversion by the optimum regularization factor method is carried out to yield typical numerical results for discussion. With the experimental set-up developed by the Institute of Particle and Two-Phase Flow Measurement (IPTFM) at the University of Shanghai for Science and Technology, sand sediment particle size is measured by attenuation spectrum and analyzed using the above inversion algorithm and theoretical models. To validate the proposed ultrasonic spectrum particle sizing method, results are compared with those obtained by microscopy. | Mingxu Su, Minghua Xue, Xiaoshu Cai, Zhitao Shang, Feng Xu Institute of Particle and Two-Phase Flow Measurement, University of Shanghai for Science and Technology, Shanghai 200093, China | 2008 | Particuology2008，6，4： | 15 |
| 3 | NUMERICAL SIMULATION ON 2-D WATER-AIR TWO-PHASE FLOW OVER TOP OUTLET显示文摘Flood discharge over top outlet of dam is simulated by 2 dimension water air two phase mathematical model. Distribution of dynamic pressure, turbulent kinetic energy (k), turbulent dissipation rate (ε), free water surface and velocity field have been obtained. The simulated results were tested by physical model, which shows that the computed results are identical with that of the physical model. | Diao Ming jun, Yang Yong quan, Xu Wei lin, Wang Wei, Liu Shan junState Key Hydraulics Laboratory of High Speed Flows, Sichuan University, Chengdu 610065, China | 2002 | Journal of Hydrodynamics2002，14，3： | 9 |
| 4 | THREE-DIMENSIONAL TURBULENCE NUMERICAL SIMULATION OF A STEPPED SPILLWAY OVERFLOW显示文摘In this paper, the k ε turbulence model is used to simulate the three dimensional turbulence flow over the stepped spillway at the Yubeishan reservoir. In order to solve the curved free water surface and to handle the complex boundary conditions, the fractional Volume Of Fluid (VOF) model that is applicable to the solution of the stratified two phase flow is introduced along with k ε turbulence model and the unstructured grid is used for the discretization of the irregular simulation domain. By these methods, the turbulence flow field of the stepped spillway is simulated successfully. The location of the free surface along the spillway, the magnitude and distribution of the velocity, the pressure on the step surface, the turbulence kinetic energy and turbulence dissipation rate are obtained by simulation. The changes and distributions of these characteristics along the width of the spillway are also obtained. The energy dissipation ratio of the stepped spillway is calculated according to the upstream and downstream water depth and | Chen Qun College of Hydraulic and Hydroelectric, Sichuan University, Chengdu 610065, ChinaDai Guang qing State Key Hydraulics Laboratory of High Speed Flows, Sichuan University, Chengdu 610065, ChinaZhu Fen qing Geotechnic Engineering Co., Second | 2002 | Journal of Hydrodynamics2002，14，3： | 9 |
| 5 | EFFECTS OF FLOW INTENSITY, OBSTACLE ALIGNMENT AND CROSS-SECTION GEOMETRY ON SCOUR AT BRIDGE ABUTMENTS显示文摘Experiments are reported on the effects of flow intensity, obstacle alignment and cross-section geometry on the equilibrium scour depth around abutments. The effect of flow intensity was studied for clear-water flow conditions, the obstacle alignment was studied for a wide range of angles of the obstacle with the flow direction, and tests on the cross-section geometry apply only to the case where the abutment extends into the main channel of a compound cross-section (two-stage channel). The channel bank and flood plain were built up with sand. The hypothesis of zero scour for flow velocities smaller than approximately 50% of the threshold velocity for the beginning of motion in the approaching flow cannot be rejected; maximum scour occurs for obstacles protruding at right angle from the cross-section walls, the reduction being small when obstacles point upstream; compared with rigid banks, the scour depth seems to be significantly reduced when channel bank and flood plain are constituted of alluvial material. | A. H. CARDOSO1, J. S. SANTOS2 and M. ROCA3 EFFECTS OF FLOW INTENSITY, OBSTACLE ALIGNMENT AND CROSS-SECTION GEOMETRY ON SCOUR AT BRIDGE ABUTMENTS A. H. CARDOSO1, J. S. SANTOS2 and M. ROCA3 EFFECTS OF FLOW INTENSITY, OBSTACLE ALIGNMENT AND CROSS-SECTIO | 2002 | International Journal of Sediment Research2002，17，2： | 6 |
| 6 | 活性氧化铝除氟研究显示文摘针对目前活性氧化铝饮水除氟中存在的问题,进行了生产性试验研究,通过采用原水投加CO_2气体降低pH值、小颗粒活性氧化铝、大流量短历时的NaOH循环再生法等新技术,提高了活性氧化铝的吸附容量和处理水的能力,克服滤料板结和假疲劳,除氟效果稳定可靠,水质好,再生时间短,用药省,降低了基建投资和运转费用。 | North China Municipal Engineering Design Institute A full-scale plant was set up for studying the existing problems on the fluoride removal from drinking water by activated alumina. Some new methods was adopted,such as the addition of CO2to reduce water pH value,the use of small-sized activated alumina,and the employment of a cyclic regeneration at large flow rate with NaOH as regenerant,which result in the improvement of adsorption capacity of activated alumina and treatment capacity, the elimination of the hardening of filtration materials and false fatigue,stable and reliable effectiveness,good quality in water,short regeneration time,small consumption of regenerant. And then the capital and openational costs were reduced. | 1989 | 中国给水排水1989，5，3： | 5 |
| 7 | Study of Heat Transfer in Ice-storage Tank显示文摘The heat transfer process of ice formation on the outside of coil pipe in the ice storage tank with glycol solution as the second refrigerant was studied in this paper analytically and experimentally. A model was developed for the charging process and the conduction shape factor was applied. Also, the result obtained from the model was compared with the experimental data, both data were in agreement. The simple model is useful for the operation, design and optimization of the ice storage tank. | Anding HeHuanqun QianZhihua HuFangde Zhou State Key Lab of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an, 710049, China | 2001 | Journal of Thermal Science2001，10，4： | 4 |
| 8 | NUMERICAL MODELLING OF THE WATER AIR TWO PHASE JET INTO A PLUNGE POOL显示文摘The areated jet into a plunge pool is simulated by using a mathematical model of water air two phase flow. The equation of air mass fraction is employed together with the equations of the algebraic stresses model (ASM) of water air mixture to give the distributions of the air concentration and other flow parameters. The computational air concentration distribution is in agreement with the experimental data. | Xu Wei lin, Wang Wei, Yang Yong quan, Chen Jian kang State Key Hydraulic Lab. of High Speed Flows, Sichuan University, Chengdu 610065, P.R.China (Received Sep. 23, 1997) | 1999 | Journal of Hydrodynamics1999，11，3： | 3 |
| 9 | Simulation of flow across complicated domain between tube bundles by the discrete vortex method显示文摘On the basis of the analysis of numerical simulation methods for the complicated domain between tube bundles, an improved Lagragian discrete vortex method (DVM) and corresponding algorithm are put forward to solve the practical difficulties of flow across tube bundles. With this method the amount of vortices can be reduced considerably, which makes quick calculation possible. Applied to the practical configuration of horizontal tube bundles, the DVM simulation is carried out and compared with the experimental results. Both the transient flow field and the profile of mean velocity and fluctuations are in good agreement with experimental results, which indicate that the DVM is suitable for the simulation of single-phase flow across tube bundles. | CHEN Bin, GUO Liejin and YANG Xiaogang(State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China) | 2003 | Progress in Natural Science:Materials International2003，13，3： | 3 |
| 10 | IMPACT OF DEBRIS FLOW ON RIVER CHANNEL IN THE UPPERREACHES OF THE YANGTZE RIVER显示文摘A debris flow gully is a 'sediment highway'. Debris flow carries huge amount of sediment into river in extreme short time. which reduces discharge capacity of the river and even blocks up the river and also causes river bank erosion. | Peng CUI (1 This research is a part of key project supported by National Natural Scence Foundation (basic) (project No. 49831010). 2 Institute of Mountain hazards and Environment, Dongchuan Debris Flow Study Station. Chinese Academy of Sciences. Chengdu | 1999 | International Journal of Sediment Research1999，14，2： | 3 |
| 11 | Numerical Simulation of Transient 3-D Turbulent Heated Jet into Crossflow in a Thick-Wall T-Junction Pipe显示文摘The present work is to investigate the transient three-dimensional heated turbulent jet into crossflow in a thickwall T-junction pipe using CFD package. Two cases with the jet-to-crossflow velocity ratio of 0.05 and 0.5 are computed, with a finite-volume method utilizing κ-ε model. Comparison of the steady-state computations with measured data shows good qualitative agreement. Transient process of injection is simulated to examine the thermal shock on the T-junction component. Temporal temperature of the component is acquired by thermal coupling with the fluid. Via analysis of the flow and thermal characteristics, factors causing the thermal shock are studied. Optimal flow rates are discussed to reduce the thermal shock. | Wu Hailing, Chen Tingkuan, Luo Yushan, Wang Haijun (State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University, Xi’an 710049, China) | 2001 | Journal of Thermal Science2001，10，1： | 3 |
| 12 | 离心式水泵叶栅流动研究显示文摘离心式水泵叶栅流动很复杂,必须采用试验与数据分析相结合的方法,才能真正有益于工程实践.本文主要介绍应用TSI二维激光多普勒测速仪探测离心式水泵叶栅流场,清晰地看到轴向涡旋对叶栅流动的影响,发现离心式泵叶栅出口处液流周向分速沿圆周变化不大.简单介绍了对试验水泵进行数据计算的结果.激光测速、流场显示以及三维数值分析结果都表明试验水泵叶片压力侧有严重的回流现象. | The Research Group on Research on Blade Cascade Flow of the Centrifugal Pump (College of Mechanical and Electrical Engineering, College of Civil Engineering and Architecture, Northern Jiaotong University, Beijing 100044) | 1998 | 北方交通大学学报1998，22，5： | 3 |
| 13 | THE APPROXIMATE FORMULAE OF PRODUCTIVITY AND WELL TESTING FOR HORIZONTAL WELLS显示文摘THEAPPROXIMATEFORMULAEOFPRODUCTIVITYANDWELLTESTINGFORHORIZONTALWELLSLiuCi-qun(InstituteofPorousFlowandFluidMechanics,Academia... | Liu Ci-qun(Institute of Porous Flow and Fluid Mechanics, Academia Sinica, LangFang 102801, P. R.China) | 1996 | Journal of Hydrodynamics1996，8，4： | 2 |
| 14 | THE APPROXIMATE ANALYTICAL SOLUTIONS OF PARABOLIC DIFFERENTIAL EQUATIONS FOR A FINITE-CONDUCTIVITY VERTICAL FRACTURE IN A RESERVOIR WITH DOUBLE-POROSITY:NON-NEWTONIAN POWER-LAW FLUIDS显示文摘By using the concept of disturbed extent for elliptical flow and the weighted average method,this paper pre-sents the approximate analytical solutions of transient pressure of Non-Newtonian Power-Law fluids for a finite-conductivity vertical fracture in a reservoir with double-porosity.The log-log diagnosis graph of the pressures cal-culated by approximate formulae may be divided into an early hi-linear flow stage i.e.the dimensionless well pres-sure difference pWDis proportional to dimensionless time tD1/4;an interporosity-flow stage and a late pseudo-radialflow stage i.e.PWDproportional to t(1-n)/(-n).The agreements between the presented solutions for special case and the is-sued works are good.The structure and meaning of the approximate formulae for vertically fractured well test inreservoir with double-porosity is simple and obvious. | Liu Ci-qun Institute of Poroue Flow and Fluid Mechanics,Langfang Hebei 102801,P.R.China | 1991 | Journal of Hydrodynamics1991，3，4： | 2 |
| 15 | NUMERICAL SIMULATION OF FLOW FOLD OF A RIVER WITH COMPLICATED BOUNDARIES显示文摘NUMERICAL SIMULATION OF FLOW FIELD OF A RIVER WITH COMPLICATED BOUNDARYSNUMERICALSIMULATIONOFFLOWFOLDOFARIVERWITHCOMPLICATEDB... | Xu Wei-lin Liao Hua-sheng (State Key Hydraulics Lab. of High Speed Flows, Sichuan Union University, Chengdu 610065, P. R. China) | 1996 | Journal of Hydrodynamics1996，8，3： | 2 |
| 16 | Distribution of void fraction for gas-liquid slug flow in aninclined pipe显示文摘In order to investigate the effect of inclination angle on the spatial distribution of phases, experiments on gas-liquid two-phase slug flow in an inclined pipe were carried out by using the optical probe and an EKTAPRO 1000 high speed motion analyzer. It has been demonstrated that the inclination angle and the mixture velocity are important parameters to influence the distribution of void fraction for upward slug flow in the inclined pipe. At high mixture velocity, the gas phase profile is axial symmetry in the cross-section of the pipe. This is similar to that for vertical slug flow. In contrast, most of the gas phase is located near the upper pipe wall at low mixture velocity. By measuring the axial variation of void fraction along the liquid slug, it can be concluded that there is a high void fraction wake region with length of 3~4D in the front of liquid slug. In the fully developed zone of liquid slug, the peak value of the void fraction is near the upper wall. | XIA Guo-Dong1, ZHOU Fang-De2, HU Ming-Sheng2 (1 College of Environmental and Energy Engineering, Beijing Polytechnic University, Beijing 100022 2 State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, xi’an 710049) | 2001 | Nuclear Science and Techniques2001，12，2： | 2 |
| 17 | at angles to the flow direction显示文摘 | Wang L B Tao W Q Numerical analysis on heat transfer and fluid flow for arrays of non-uniform plate length aligned | 1997 | International Journal of Numerical Methods for Heat and Fluid Flow1997，7，5： | 1 |
| 18 | J显示文摘 | Kun Xu Zhi-Hui Li Microchannel flow in the slip regime:gaskinetic BGK-Burnett solutions | | 0，，： | 1 |
| 19 | Introduction to vortex theory显示文摘 | LUGT H J FLOW V | 1999 | Journal of Fluid Mechanics1999，384，1： | 1 |
| 20 | Analysis of velocity fields and dispersive cavity parameters as a function of building width to building height ratio using a 3-D computer model for squat buildings显示文摘 | Flowe A C Kumar A | 2000 | Journal of Wind Engineering and Industrial Aerodynamics2000，86，： | 1 |
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