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Dynamical Modeling and Numerical Simulation of the Environmentally Friendly Water Hydraulic PercussiveDrill

Yue Wenhui,Liu Deshun,Wu xianming,Zhu Pingyu,Li Xibing

Strategic Study of CAE 2007, Volume 9, Issue 8,   Pages 57-61

Abstract:

In this paper,  an environmentally friendly hydraulic percussivedrill is introduced,  in which water is used to perform all function of the drill,  such asnbsp;and microcomputer simulation of YST-25 environmentally friendly water hydraulic percussive drill The performances of YST-25 environmentally friendly water hydraulic percussive drill are evaluated The suggestions can improve the design of environmentally friendly hydraulic percussive drill.

Keywords： impact     wave mechanics     simulation     water hydraulic percussive drill    

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Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloomcontrol in reclaimed water landscape

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1564-1

Abstract:

● A new model for bloom control in open land scape water was constructed

Keywords： Reclaimed water landscape     Algal bloom     Nitrogen and phosphorus     Hydraulic retention time     Threshold    

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Design of hydraulic resonance of pulsed water - jet

Pu Jianing,Chen Ming

Strategic Study of CAE 2009, Volume 11, Issue 2,   Pages 36-42

Abstract: air chamber at the head and midst of conduit respectively , and elaborately structuring conditions of waterjet system , a strong hydraulic resonance can be induced and pressure amplitude at nozzle can be greatlymathematical- physical model of the system is illuminated with characteristics finite difference equations of hydraulic

Keywords： pulsed water- jet     hydraulic resonance     method of characteristics     variable time step method     Matlab    

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Effects of alfalfa coverage on runoff, erosion and hydraulic characteristics of overland flow on loess

Shufang WU, Pute WU, Hao FENG, G. P. Merkley

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 76-83 doi: 10.1007/s11783-011-0282-x

Abstract: vegetation, overland and soil erosion can provide valuable insight for the conservation of soil and waterAn experiment was conducted to study water infiltration, runoff generation process, rate of sedimentFurthermore, the down-slope water infiltration rate for the bare soil plots was higher than in the up-slope

Keywords： alfalfa     soil erosion     runoff and sedimentation     soil water infiltration     overland flow     hydrodynamic characteristics    

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CFD Simulation of thermal hydraulic characteristics in a typical upper plenum of RPV

Mingjun WANG, Lianfa WANG, Yingjie WANG, Wenxi TIAN, Jian DENG, Guanghui SU, Suizheng QIU

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 930-945 doi: 10.1007/s11708-021-0728-1

Abstract: computational fluid dynamics (CFD) study was conducted on the three different types of pressurized water

Keywords： pressurized water reactor (PWR)     upper plenum     internal structures     temperature distribution     computational    

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Decision Support System for emergency scheduling of raw water supply systems with multiple sources

Qi WANG, Shuming LIU, Wenjun LIU, Zoran KAPELAN, Dragan SAVIC

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 5,   Pages 777-786 doi: 10.1007/s11783-013-0537-9

Abstract: A hydraulic model-based emergency scheduling Decision Support System (DSS) is designed to eliminate theimpact of sudden contamination incidents occurring upstream in raw water supply systems with multipleThe DSS consists of four functional modules, including water quality prediction, system safety assessmentFirst, the water quality variations on specific cross-sections are calculated given the pollution informationscenario analysis, it is demonstrated that this DSS tool is instrumental in emergency scheduling for the water

Keywords： decision support system     raw water supply system     contamination incident     emergency scheduling     hydraulic    

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Hydraulic model for multi-sources reclaimed water pipe network based on EPANET and its applications in

JIA Haifeng, WEI Wei, XIN Kunlun

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 57-62 doi: 10.1007/s11783-008-0013-0

Abstract: Water shortage is one of the major water related problems for many cities in the world.For using the reclaimed water soundly, Beijing planned to build a large scale reclaimed water pipe networksIn order to support the plan, the integrated hydraulic model of planning pipe network was developed basedAt last the pipe network planning scheme of reclaimed water was proposed.water supplies, and provided a scientific basis for the reclaimed water utilization in Beijing.

Keywords： diameter     Beijing municipal     reclaimed     planning     elevation    

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Numerical study of droplet dynamics impinging onto steel plate covered with scale layer

Jan BOHá?EK, Ale? HORáK

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 389-398 doi: 10.1007/s11465-010-0108-8

Abstract: Hydraulic descaling of rolled material is a part of all rolling trains.This paper describes the dynamics of high-speed impact between the compressible water droplet and theThe phenomenon is known as water hammer effect.

Keywords： hydraulic descaling     scale     rolling     water-hammer     descaling theory    

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Multiobjective trajectory optimization of intelligent electro-hydraulic shovel

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0706-2

Abstract: consumption, execution time, and excavation volume as the objective functions is presented for the electro-hydraulic

Keywords： trajectory planning     electro-hydraulic shovel     cubic polynomial S-curve     multiobjective optimization    

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Effects of slip length and hydraulic diameter on hydraulic entrance length of microchannels with superhydrophobic

Wenchi GONG, Jun SHEN, Wei DAI, Zeng DENG, Xueqiang DONG, Maoqiong GONG

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 127-138 doi: 10.1007/s11708-020-0661-8

Abstract: This paper investigated effects of slip length and hydraulic diameter on the hydraulic entrance lengthIt is found that superhydrophobic microchannels have a longer hydraulic entrance length than that ofThe dimensionless hydraulic entrance length slightly increases with the increasing slip length at approximatelyRe<10, and does not vary with the hydraulic diameter.

Keywords： laminar flow     hydraulic entrance length     super hydrophobic surface     slip length     hydraulic diameter    

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Hydromechanical model for hydraulic fractures using XFEM

Bo HE

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 240-249 doi: 10.1007/s11709-018-0490-6

Abstract: In this study, a hydromechanical model for fluid flow in fractured porous media is presented. We assume viscous fluids and the coupling equations are derived from the mass and momentum balance equations for saturated porous media. The fluid flow through discrete cracks will be modelled by the extended finite element method and an implicit time integration scheme. We also present a consistent linearization of the underlying non-linear discrete equations. They are solved by the Newton-Raphson iteration procedure in combination with a line search. Furthermore, the model is extended to includes crack propagation. Finally, examples are presented to demonstrate the versatility and efficiency of this two-scale hydromechanical model. The results suggest that the presence of the fracture in a deforming, porous media has great impact on the fluid flow and deformation patterns.

Keywords： multi-phase medium     porous     fracture     multi-scale method    

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Review of fluid and control technology of hydraulic wind turbines

Maolin CAI, Yixuan WANG, Zongxia JIAO, Yan SHI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 312-320 doi: 10.1007/s11465-017-0433-2

Abstract:

This study examines the development of the fluid and control technology of hydraulic wind turbinesThe current state of hydraulic wind turbines as a new technology is described, and its basic fluid modelFinally, the advantages of hydraulic wind turbines are enumerated.Hydraulic wind turbines are expected to become the main development direction of wind turbines.

Keywords： wind turbine     hydraulic system     fluid model     control technology    

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Numerical study on the process of water inrush in Karst caves with hydraulic pressure caused by tunnel

Huang Mingli,Wang Fei,Lu Wei,Tan Zhongsheng

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 93-96

Abstract:

Water inrush is often encountered during tunnel excavation in karst regionSo it is of important significance to study the mechanism of water inrush for the prevention of Karstcharacters of stress distribution、displacement field and acoustic emission(AE) during the process of waterThe results deepen the understanding of the mechanism of water flush and surrounding rock failure causedby gradually increasing hydraulic stress in Karst caves, and it can provide reliable reference for prevention

Keywords： water flush in Karst caves     tunnel excavation     mechanical mechanism     numerical simulation    

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Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 377-382 doi: 10.1007/s11465-011-0226-y

Abstract:

Hydraulic thrust system is an important system in a shield tunneling machine.In this paper, a hydraulic thrust system is explained, and a corresponding simulation model is carried

Keywords： tunnel     hydraulic thrust system     pressure regulation     simulation    

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A novel high-temperature and high-pressure hydraulic pump based on mononeuron control

Linhui ZHAO, Xin FANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 219-223 doi: 10.1007/s11465-009-0024-y

Abstract: Based on structures and characteristics of traditional hydraulic pumps, this paper proposes a novel high-temperatureand high-pressure hydraulic pump (HHHP) that can work under 150°C and 28 MPa to overcome problems of

Keywords： mononeuron PID control     hydraulic pump     pressure fluctuation    

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Title Author Date Type Operation

Dynamical Modeling and Numerical Simulation of the Environmentally Friendly Water Hydraulic PercussiveDrill

Yue Wenhui,Liu Deshun,Wu xianming,Zhu Pingyu,Li Xibing

Journal Article

Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloomcontrol in reclaimed water landscape

Journal Article

Design of hydraulic resonance of pulsed water - jet

Pu Jianing,Chen Ming

Journal Article

Effects of alfalfa coverage on runoff, erosion and hydraulic characteristics of overland flow on loess

Shufang WU, Pute WU, Hao FENG, G. P. Merkley

Journal Article

CFD Simulation of thermal hydraulic characteristics in a typical upper plenum of RPV

Mingjun WANG, Lianfa WANG, Yingjie WANG, Wenxi TIAN, Jian DENG, Guanghui SU, Suizheng QIU

Journal Article

Decision Support System for emergency scheduling of raw water supply systems with multiple sources

Qi WANG, Shuming LIU, Wenjun LIU, Zoran KAPELAN, Dragan SAVIC

Journal Article

Hydraulic model for multi-sources reclaimed water pipe network based on EPANET and its applications in

JIA Haifeng, WEI Wei, XIN Kunlun

Journal Article

Numerical study of droplet dynamics impinging onto steel plate covered with scale layer

Jan BOHá?EK, Ale? HORáK

Journal Article

Multiobjective trajectory optimization of intelligent electro-hydraulic shovel

Journal Article

Effects of slip length and hydraulic diameter on hydraulic entrance length of microchannels with superhydrophobic

Wenchi GONG, Jun SHEN, Wei DAI, Zeng DENG, Xueqiang DONG, Maoqiong GONG

Journal Article

Hydromechanical model for hydraulic fractures using XFEM

Bo HE

Journal Article

Review of fluid and control technology of hydraulic wind turbines

Maolin CAI, Yixuan WANG, Zongxia JIAO, Yan SHI

Journal Article

Numerical study on the process of water inrush in Karst caves with hydraulic pressure caused by tunnel

Huang Mingli,Wang Fei,Lu Wei,Tan Zhongsheng

Journal Article

Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Journal Article

A novel high-temperature and high-pressure hydraulic pump based on mononeuron control

Linhui ZHAO, Xin FANG

Journal Article