Experimental Investigation Monitoring the Saturated Line of Slope Based on Distributed Optical Fiber Temperature System by Feng Li, Weixing Qin, Huiren Hu

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STUDY ON THE OPERATING CHARACTERISTICS OF UNLOADER OF RECIPROCATING COMPRESSOR STEPLESS CAPACITY REGULATION SYSTEM by ZHENG ZhaoXing, JIANG ZhiNong, WANG Yao, ZHANG JinJie

“…On the basis of this, the operation of the unloader under different oil supply pressure and different ejection time is simulated, the ideal hydraulic ejection force and the ejection phase are determined. …”
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Code Development in Coupled PARCS/RELAP5 for Supercritical Water Reactor by Po Hu, Paul Wilson

“…In PARCS, modification is focused on extending the water property tables to supercritical pressure, modifying the variable mapping input file and related code module for processing thermal-hydraulic information from separated coolant/moderator channels, and modifying neutronics feedback module to deal with the separated coolant/moderator channels. …”
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Simulation and Evaluation of Sponge City Reconstruction Effect in Urban Drainage Residential Area by YU Haijun, FAN Yuyan, CAO Daling, CHEN Wei

“…Drainage effect evaluation is a necessary links in the construction of Sponge City,and urban rainfall mathematical models are important supporting tools for the evaluation work.Taking a residential area in Beijing City as an example,a refined drainage model of the study area was constructed based on a coupled 1D and 2D hydrodynamic model for urban rainstorms,and the drainage situation before and after the sponge transformation of the drainage system were simulated and analyzed.The results showed that the constructed model can well reflect the real drainage situation of the community,and the proposed drainage system upgrade plan can effectively improve the drainage capacity in the area,and the overflow and submergence were significantly reduced.The research can provide some technical reference for the simulation of the hydraulic condition of drainage community and the construction and management of Sponge City.…”
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Computational Modelling of Blood Flow Development and Its Characteristics in Magnetic Environment by Gopal Chandra Shit

“…With an aim to validate our numerical approach, the computational results are compared with those of the analytical solution available in the developed region far from the singularity. The hydraulic impedance by unit length within the developed flow region increases with the magnetic field. …”
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Water Sensitivity and Structural Properties of Loess by Longfei Zhang, Zaiqiang Hu, Hongru Li, Haicheng She, Xiaoliang Wang, Xi Yang, Xiaoning Han

“…The collapsibility sensitivity of loess is determined primarily by its structural and hydraulic state.…”
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Systematic Design of Parallel-connected Planetary Gear Mechanism of Nine-speed Automatic Transmission for Automobile by Xue Huanzhang, Peng Jianxin, Deng Jiewen

“…The scheme optimized selection method of automobile automatic transmission is presented by analyzing the planetary gear mechanical construction of hydraulic automatic transmission and adding the necessary constraints of the design objective. …”
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Study on the Composite Driving System of Dexterous Hand by Luo Tianhong, Liu Lang, Chen Cai

“…Aiming at the problems which perform in the traditional driving mode,for example,the complex structure of motor drive system,the large volume of hydraulic drive system,the difficult control of air pressure drive system,a composite driving system actuated by micro- motor and shape memory alloy（ SMA） spring is proposed,then this system is applied to a humanoid multi- finger dexterous hand,the overall structure of the dexterous hand is simplified,and the control strategy gets optimized. …”
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Design and Analysis of a New Type of Electro-mechanical Brake-by-wire based on Wedge Transmission by Yansong Yang, Yutao Luo, Xiaotong Xu

“…Compared with the national and industrial standards，and traditional hydraulic brake system by wire，the new brake has a large lead in loading and unloading speed，good follow-up performance，and is suitable for the use of the chassis system controlled by wire.…”
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Adaptive Landing Gear: Optimum Control Strategy and Potential for Improvement by Grzegorz Mikułowski, Łukasz Jankowski

“…An adaptive landing gear is a landing gear (LG) capable of active adaptation to particular landing conditions by means of controlled hydraulic force. The objective of the adaptive control is to mitigate the peak force transferred to the aircraft structure during touch-down, and thus to limit the structural fatigue factor. …”
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Design and Simulation of Shift Schedule for Modular Automatic Transmission by Wang Yanzhong, Wang Dapeng, Li Yuan, Ren Shaoying, Dou Delong

“…A dynamic shift schedule is designed for the prototype of hydraulic power shift automatic transmission. The steady-state schedule cannot adapt to dynamic condition,aiming at the problems including wrong shift caused by sudden change of throttle,a four-parameter fuzzy control method is designed to modify based on throttle opening,throttle change rate,acceleration and speed. …”
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Research on Fluid Transient and Operation Scheduling Safety of Water Supply System by YUAN Zhe, ZHOU Zixuan

“…In order to prevent the water hammer caused by the change of water demand and accidental pump stop in the actual operation of the water supply system,based on the actual water supply project and method of characteristics,this paper establishes the hydraulic transition process model of the pump water supply system,and studies the fluid transient review and the optimization of operation scheduling safety.The actual project shows that without water hammer protection measures,the excessive negative pressure will occur in the pipeline in case of accidental pump stop.By taking the water hammer protection measures on the surge tower at lower positions,the negative pressure is effectively avoided and the safe operation of water supply system is guaranteed.By reducing the water supply pressure at the access point of the water plant,while ensuring the system safety,the water supply of the pump set is increased,the energy saving benefits are improved,and the economic operation of water supply projects is realized.…”
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Numerical Prediction of Flow and Heat Transfer in a Two-pass Square Channel with 90° Ribs by Yong-Jun Jang, Hamn-Ching Chen, Je-Chin Han

“…Square sectioned ribs were employed along the one side surface. The rib height-to-hydraulic diameter ratio (e/Dh) is 0.125 and the rib pitch-to-height ratio (P/e) is 10. …”
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The Experimental Investigation of the Optimization of the Flow State of a Ladder-Shaped Spillway in a Certain Reservoir by Xin-Bao Gu, Yang Zhang, Qi-Hong Wu, Yong Wang

“…The original design scheme of ladder-shaped spillways in certain reservoirs is improved by using a hydraulic similar model experiment. The results of the original scheme demonstrate that the stilling basin cannot meet the requirement of safe discharge, and the flow state at the end of the stilling basin is violent and chaotic. …”
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Fatigue Life Analysis of Spherical Cylinder Coupling of Sand Roller by Ouyang Liange, Geng Zhengyang, Zhou Shuiting, Huang Hongwu

“…The spherical cylinder coupling is the key connection device between sand roller and hydraulic motor of beach- cleaner. To study the fatigue life of spherical cylinder coupling of sand roller,firstly,the fatigue calculation with L- P theory of point connection carried out,the numerical analysis model of coupling with finite element method is built and the multi- body contact finite element analysis with augmented Lagrange algorithm is completed. …”
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RESEARCH ON SPEED AND PRESSURE CONTROL STRATEGY OF STABLE SWITCH ABOUT FOREPOLING EQUIPMENT by LUAN LiJun, ZHAO HuiMeng, XIE Miao, LIU ZhiXiang

“…Taking into account the operational principle of forepoling equipment,and as the target to improving support efficiency and reducing the disturbance on the roof in the process of supporting,a kind of speed and pressure composition control method was presented.The control method adopts the constant pump driven directly by servo motor to replace the traditional electro-hydraulic proportional valve,and the variable structure algorithm based on the fuzzy sliding mode was used as control strategy.Theoretical analysis and experimental results show that,compared with the traditional speed and pressure control method,the control method presented in the paper can reduce concussion on the roof in the process of switching from speed control to pressure control,and can improve support efficiency.Research findings can provide a theoretical basis for the development and control strategy of forepoling equipment.…”
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The Application of Seepage Flow Prediction in Nuer Dam Based on the Grey Self-Memory Model by Ai-Feng Wang, Xiu-Tao Yang, Da-Hai Guo

“…Finally, the conclusions are drawn that relatively to GM (1,1), the grey self-memory model has higher accuracy, and it not only can predict the time sequence of seepage pressure in the Nuer reservoir accurately but also provide a new method for the development trend of seepage flow in the hydraulic engineering in the future.…”
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Analysis of the possible consequences of large-scale production of sand and gravel mixture in the downstream of large hydroelectric facilities based on hydrodynamic modeling (the V... by Anatoliy V. Lepikhin, Yuri S. Lyakhin, Alexey A. Tiunov, Anna A. Wozniak, Anton I. Luchnikov, Dmitiy V. Perepelitsa, Andrey V. Bogomolov

“…The authors have presented estimation of possible hydraulic consequences of the large-scale mining of sand/gravel mixtures in the upper part of the Lower Kama Reservoir 9the Votkinsk Reservoir downstream) based on the multi-version computation experiments with the developed hydro/dynamic model of the water body under consideration. …”

Benefits and Challenges of Over-Actuated Excitation Systems by Norman Fitz-Coy, Vivek Nagabhushan, Michael T. Hale

“…This issue is less critical for electro-dynamic exciters which tend to be more compliant than servo-hydraulic exciters. To facilitate the technical challenges discussion, generalized methods for determining the drive output commands and the actuator input transform is presented. …”
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Real-Time Trajectory Planning and Control for Constrained UAV Based on Differential Flatness by Dongli Wu, Hao Zhang, Yunping Liu, Weihua Fang, Yan Wang

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