HYDRAULIC

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Study of hydraulic transport characteristics and erosion wear of twisted four-lobed pipe based on CFD-DEM
《Particuology》2024年第12期356-369,共14页Chunya Sun Zhifang Xu Yanqiu Xiao Guangzhen Cui Zhengdong Xiao Wanbin Cui Pengpeng Wang Lianhui Jia 
supported by National Natural Science Foundation of China,Key Scientific Research Project of Colleges and Universities in Henan Province (grant Nos.52375034,23ZX013);Department of Science and Technology of Henan Province (grant No.242102221013)。
Pipeline hydraulic transportation is extensively utilized across diverse sectors,with enhancing the performance of pipeline hydrodynamic transport and minimizing erosion wear on the pipeline walls being essential for ...
关键词：Hydraulic transport CFD-DEM Twisted four-lobed pipe Erosion wear 
Empirical prediction of hydraulic aperture of 2D rough fractures:a systematic numerical study
《Frontiers of Earth Science》2024年第3期579-597,共19页Xiaolin WANG Shuchen LI Richeng LIU Xinjie ZHU Minghui HU 
funded by National Key R&D Program of China(No.2022YFE0128300);National Natural Science Foundation of China(Grant Nos.52379114 and 52379113);Natural Science Foundation of Jiangsu Province,China(No.BK20211584);the Assistance Program for Future Outstanding Talents of the China University of Mining and Technology(No.2023WLKXJ187);the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX23_2746).
This study aims to propose an empirical prediction model of hydraulic aperture of 2D rough fractures through numerical simulations by considering the influences of fracture length,average mechanical aperture,minimum m...
关键词：fluid flow rough fracture surface mechanical aperture hydraulic aperture predictive model 
Method of non-stationary random vibration reliability of hydro-turbine generator unit
《Acta Mechanica Sinica》2024年第9期98-115,共18页Zhaojun Li Fuxiu Liu Ganwei Cai Jiang Ding Jiaquan Chen 
supported by the National Natural Science Foundation of China(Grant Nos.51465001 and 51905113);the Natural Science Foundation of Changsha City(Grant No.kq2208085)。
The hydraulic excitation acting on a hydro-turbine generator unit exhibits obvious non-stationary characteristics.In order to account for these characteristics,this study focuses on the non-stationary random vibration...
关键词：Hydro-turbine generator unit Hydraulic excitation Non-stationarity Vibration reliability Active learning 
An Efficient Reliability-Based Optimization Method Utilizing High-Dimensional Model Representation and Weight-Point Estimation Method
《Computer Modeling in Engineering & Sciences》2024年第5期1775-1796,共22页Xiaoyi Wang Xinyue Chang Wenxuan Wang Zijie Qiao Feng Zhang 
supported by the Innovation Fund Project of the Gansu Education Department(Grant No.2021B-099).
The objective of reliability-based design optimization(RBDO)is to minimize the optimization objective while satisfying the corresponding reliability requirements.However,the nested loop characteristic reduces the effi...
关键词：Reliability-based design optimization high-dimensional model decomposition point estimation method Lagrange interpolation aviation hydraulic piping system 
Flow Field Simulation and Parameter Analysis of Hydraulic Unbalanced Bionic Self-recovery Actuator for Rotary Equipment
《Journal of Bionic Engineering》2024年第1期325-343,共19页Wei Li Xin Pan Dehong Ge Jinji Gao 
the financial support through Beijing Natural Science Foundation(Grant No.3212010);National Natural Science Foundation of China(Grant No.51875031).
The rotor is the most important component of rotating machinery,and the vibration produced by its mass unbalance has a serious influence on the secure and steady operation of the machine,so an effective online suppres...
关键词：Engineering self-recovery-Bionics Simulation analysis Self-recovery regulation 
Adjacent mode resonance of a hydraulic pipe system consisting of parallel pipes coupled at middle points被引量：2
《Applied Mathematics and Mechanics(English Edition)》2023年第3期363-380,共18页Xin FAN Changan ZHU Xiaoye MAO Hu DING 
Project supported by the National Natural Science Foundation of China(No.12002195);the Pujiang Project of Shanghai Science and Technology Commission of China(No.20PJ1404000)。
The coupling vibration of a hydraulic pipe system consisting of two pipes is studied.The pipes are installed in parallel and fixed at their ends,and are restrained by clips to one bracket at their middle points.The pi...
关键词：hydraulic pipe system coupling vibration adjacent mode coupling parallel pipe conveying fluid harmonic balance method(HBM) 
A Method of Evaluating the Effectiveness of a Hydraulic Oscillator in Horizontal Wells
《Sound & Vibration》2023年第1期15-27,共13页Zhen Zhong Yadong Li Yuxuan Zhao Pengfei Ju 
Bent-housing motor is the most widely used directional drilling tool,but it often encounters the problem of high friction when sliding drilling in horizontal wells.In this paper,a mathematical model is proposed to sim...
关键词：Hydraulic oscillator axial vibration friction reduction dynamic effective tractoring force placement optimization 
Influence of permeability anisotropy of seepage flow on the tunnel face stability被引量：2
《Underground Space》2023年第1期1-14,共14页Qiguang Di Pengfei Li Mingju Zhang Jie Wu 
the financial support provided by National Natural Science Foundation of China(Grant No.51978019);Beijing Natural Science Foundation(Grant No.8222004).
This paper focuses on the influence of permeability anisotropy of seepage flow on the face stability for a shied tunnel.An analytical model has been proposed to present the hydraulic head distribution around the tunne...
关键词：Seepage flow Hydraulic head distribution Permeability anisotropy Shield tunnel Water pressure 
Stable expression and control parameters in the numerical simulation of unsaturated flow被引量：1
《Frontiers of Structural and Civil Engineering》2022年第12期1501-1514,共14页Zhiyuan ZHANG Xu LI Yongkang WU Xiaokang LI 
supported by the National Natural Science Foundation of China(Grant Nos.51979002 and 52025094).
The Richards’equation describes the flow phenomenon in unsaturated porous media and is essential to hydrology and environmental science.This study evaluated the numerical stability of two different forms of the Richa...
关键词：Richards’equation sensitivity analysis unsaturated soil hydraulic diffusivity seepage simulation 
Simulation of the Hydraulic Behavior of a Bionic-Structure Drip Irrigation Emitter被引量：1
《Fluid Dynamics & Materials Processing》2022年第4期1169-1182,共14页Tianyu Xu Yanru Su Zhouming Su Shuteng Zhi Ennan Zheng Chengcheng Yan 
This work was supported by the Basic Scientific Research Fund of Heilongjiang Provincial Universities(2020-KYYWF-1042).
The bionic structure drip irrigation emitter(BSDE)is a new-type emitter,by which better hydraulic performances can be obtained.In the present work,twenty-five sets of orthogonal test schemes were implemented to analyz...
关键词：BSDE flow index energy dissipation numerical simulation verification test 
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