Laboratory Simulation of Flow through Rough-Walled Microfractures under High Hydraulic Gradient by Shuai Zhang, Wei-Guo Qiao, Yan-Zhi Li, Wei-Jie Song, Jun-Ling Qin, Ji-Yao Wang

“…The test results also demonstrated that the surface strain is significantly affected by hydraulic pressure.…”
Get full text

Enhancing Hydraulic Efficiency of Pelton Turbines Through Computational Fluid Dynamics and Metaheuristic Optimization by Guillermo Barragan, Sebastian Atarihuana, Edgar Cando, Victor Hidalgo

“…These parameters not only resulted in a 2.56% increase in hydraulic efficiency, but also led to a 0.1 [kPa] reduction in the maximum pressure at the bottom of the bucket. …”
Get full text

Experimental Investigation on Proppant Transport Behavior in Hydraulic Fractures of Tight Oil and Gas Reservoir by Guoliang Liu, Shuang Chen, Hongxing Xu, Fujian Zhou, Hu Sun, Hui Li, Zuwen Wang, Xianwen Li, Kaoping Song, Zhenhua Rui, Ben Li

“…Based on the proposed criterion, proppant transport experiments in hydraulic fractures of tight oil and gas reservoirs were conducted to explore the proppant placement behavior and identify the key parameters that affected the fracture propping efficiency. …”
Get full text

Optimal Control for a Parallel Hybrid Hydraulic Excavator Using Particle Swarm Optimization by Dong-yun Wang, Chen Guan

“…Optimal control using particle swarm optimization (PSO) is put forward in a parallel hybrid hydraulic excavator (PHHE). A power-train mathematical model of PHHE is illustrated along with the analysis of components’ parameters. …”
Get full text

Experimental and Numerical Investigation on Basic Law of Dense Linear Multihole Directional Hydraulic Fracturing by Xin Zhang, Yuqi Zhang

“…Using the dense linear multihole to control the directional hydraulic fracturing is a significant technical method to realize roof control in mining engineering. …”
Get full text

Influence of Uncertainty of Soil Hydraulic Parameters on Stability of Unsaturated Slopes Based on Bayesian Updating by Hsin-Fu Yeh, Tsien-Ting Huang, Ya-Sin Yang, Chien-Chung Ke

“…Additionally, SWRC parametric models with different confidence intervals were created, and a hydraulic coupled model was used to evaluate the influence of the SWRC parameters (with different confidence intervals) on slope seepage and stability under rainfall conditions. …”
Get full text

Back Analysis of Rock Hydraulic Fracturing by Coupling Numerical Model and Computational Intelligent Technology by Shaojun Li, Hongbo Zhao, Xiating Feng, Quan Jiang, Qiancheng Sun

“…Hydraulic fracturing is widely used to determine in situ stress of rock engineering. …”
Get full text

Influence of Degree of Compaction on Unsaturated Hydraulic Properties of a Compacted Completely Decomposed Granite by Rui Chen, Runqiang Tan, Zhongkui Chen, Yang Ping, Zhen Mei

“…It is crucial to understand hydraulic properties, i.e., soil-water characteristic curve (SWCC) and unsaturated permeability function (UPF), of completely decomposed granite (CDG) for relevant engineering projects in southeastern China. …”
Get full text

Development of a Small-Working-Volume Plunger Hydraulic Pump with Improved Performance Characteristics by Alexey N. Beskopylny, Denis Medvedev, Vyacheslav Grishchenko, Evgeniy Ivliev

“…This challenge stems from the fact that currently available controlled hydraulic pumps exhibit either a high cost or suboptimal life and efficiency parameters. …”
Get full text

Energy-Efficient Robust Control for Direct Drive and Energy Recuperation Hydraulic Servo System by Weiping Wang, Jiyun Zhao

“…During the vertical cyclic actuation process of heavy materials handling, the gravitational potential energy will be converted to heat in the form of throttle in the traditional hydraulic system. Therefore, large energy dissipation is inevitable is this process. …”
Get full text

Dynamic Characteristics Analysis of Vehicle Incorporating Hydraulically Interconnected Suspension System with Dual Accumulators by Shengzhao Chen, Bangji Zhang, Boyuan Li, Nong Zhang

“…A novel roll-resistant hydraulically interconnected suspension with dual accumulators on each fluid circuit (DHIS) is proposed and dynamic characteristics of vehicle incorporating DHIS subsystem are studied in this paper. …”
Get full text

INFLUENTIAL PARAMETERS DURING PRESSURE RELIEF EXPOSED IN WORKING CHAMBER OF HYDRAULIC CYLINDER PRESS by MILUTIN ŽIVKOVIĆ

“… Relieving volumes, which were under pressure, with all the controls on the distribution and management of oil supply, may lead to the occurrence of the hydraulic impact, which is especially distinct in hydraulic presses. …”
Get full text

Hydraulic and Mechanical Relationship of Individual Fracture in Rock under Compression and Shearing: Theoretical Study by Zhiqiang Zhou, Yu Zhao, Chaolin Wang

“…In this paper, a new approach has been developed for predicting the hydraulic and mechanical relationship of individual fractures subjected to normal stress and compression-shear stress. …”
Get full text

Hydraulic Fracturing Behavior in Shale with Water and Supercritical CO2 under Triaxial Compression by Jianming He, Yixiang Zhang, Chao Yin, Xiao Li

“…Comparing to the water fracturing fluid regularly used in the hydraulic fracturing operation, supercritical CO2 (SC-CO2) as a promising nonaqueous fracturing fluid has the great potential for the improvement of production and protection of shale reservoir. …”
Get full text

Nonlinear Dynamical Analysis of Hydraulic Turbine Governing Systems with Nonelastic Water Hammer Effect by Junyi Li, Qijuan Chen

“…All essential components of HTGS, that is, conduit system, turbine, generator, and hydraulic servo system, are considered in the model. …”
Get full text

The analysis of working medium flow through flow cavity elements of pneumatic-hydraulic systems by A. S. Pugachuk, O. A. Vorozheeva, A. V. Chernyshev

Subjects: Get full text

Experimental and Numerical Simulation Study of Hydraulic Fracture Propagation during Coalbed Methane Development by Qingshan Ren, Yaodong Jiang, Pengpeng Wang, Guangjie Wu, Nima Noraei Danesh

“…Therefore, it is important to improve the law of hydraulic fracture propagation in coal and rigorously study the influencing factors. …”
Get full text

A Conceptual Comparison of Hydraulic and Electric Actuation Systems for a Generic Fighter Aircraft by Alessandro Dell’Amico, Christopher Reichenwallner

“…The methodology is applied to a generic fighter by comparing hydraulic and electric actuation system architectures. …”
Get full text

Study on Hydraulic Connection and Seepage Law of Goaf Groups in Coal Mine Underground Reservoir by Wei Qin

“…A coal mine underground reservoir, composed of a large number of goaf groups, is effective in achieving the protective utilization of coal mine water. Mastering the hydraulic connection between the goaf groups and the law of seepage is the key to the design and safe operation of coal mine underground reservoirs. …”
Get full text

Study of the mechanical behaviour of hydraulic lime mortars with and without basalt fibres, at different ages by Analía Vázquez, María Isabel Prieto, María de las Nieves González, Alfonso Cobo

Subjects: “…mortars; hydraulic lime; basalt fibres; compression; bending…”
Get full text