Showing 1,341 - 1,360 results of 2,027 for search '"hydraulic"', query time: 0.05s Refine Results
  1. 1341

    Conformance Control for Tight Oil Cyclic Gas Injection Using Foam by Falin Wei, Song Zhang, Yilin Xi, Zhouyuan Zhu, Chunming Xiong, Chuanzhen Zang, Junjian Li

    Published 2022-01-01
    “…We focus on improving two categories of conformance control problems using foam, making the injection profile for single well more evenly distributed and mitigating the gas breakthrough to adjacent wells through the connected hydraulic fractures in a multiwell setting. The simulation results show that foam has shown major impact in improving the gas conformance control in both cases. …”
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  2. 1342
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  4. 1344

    Investigating the Effect of Lignosulfonate on Erosion Rate of the Embankments Constructed with Clayey Sand by Hamid Reza Koohpeyma, Amir Hossein Vakili, Hossein Moayedi, Alireza Panjsetooni, Ramli Nazir

    Published 2013-01-01
    “…The clayey sand was tested in various hydraulic heads in terms of internal erosion in its natural state as well as when it is mixed with the different percentages of lignosulfonate. …”
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  5. 1345

    Design and Experimental Research of Lubrication System of High Power Transfer Case by Zhang Lei, Ge Kai, Shan Hongbo, Li Hongbiao, Zhao Yanming, Zhang Bin, Mu Lianhao, Gao Lili, Zhao Juan, Jiang Zhong

    Published 2018-01-01
    “…Therefore,the power thermal energy model of the hotspots of the transmission parts is built first,through the heat balance conditions,the flow demand of the lubrication point and the overall are estimated,and then a hydraulic simulation analysis model is established,the matching lubrication system piping is designed. …”
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  6. 1346

    Optimization of ocean thermal energy conversion based on pressure energy recovery of ammonia water working medium by Mingqian Tian, Yanni Yu, Yunxing Hou, Yun Chen, Li Zhang, Yanjun Liu, Yanjun Liu

    Published 2025-01-01
    “…Based on pressure energy utilization devices such as pressure exchangers, hydraulic turbines, and ejectors, three methods are proposed to recover and utilize the pressure energy of the lean ammonia solution, in order to improve the thermal efficiency and systematic performance. …”
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  7. 1347

    Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion Units by Marco Altosole, Giovanni Benvenuto, Massimo Figari, Ugo Campora

    Published 2012-01-01
    “…The first procedure is based on a generalized performance map for mixed flow pumps, derived from the analysis of several waterjet pumps by applying similitude principles of the hydraulic machines. The second approach, validated by some comparisons with current waterjet installations, is based on a complete physical approach, from which a set of non-dimensional waterjet characteristics has been drawn by the authors. …”
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  8. 1348

    An Experimental Study Examining the Size Effect on the Compressive Dynamic Performance of Nuclear Power Containment Concrete by Furong Li, Guoxing Chen, Hui Long

    Published 2020-01-01
    “…To study the size effect of nuclear power containment concrete (NPCC) under compressive dynamic performance, the cube concrete specimens with 3 different cube sizes were measured at 10 different loading strain rates using a hydraulic servo, and the failure mode and compressive strength of NPCC were compared and analyzed under different loading conditions. …”
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  9. 1349

    Comparative Hydrological and Geoelectrical Study on the Quaternary Aquifer in the Deltas of Wadi Badaa and Ghweiba, El Ain El Sukhna Area, Northwest Suez Gulf, Egypt by M. M. El Osta, A. El. El Sheikh, M. S. Barseem

    Published 2010-01-01
    “…The results indicated that, the transmissivity is found to be closely related with transverse resistance and the hydraulic conductivity with average transverse resistivity, while the salinity is inversely related with resistivity. …”
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  10. 1350

    Analysis on Force Transmission Characteristics of Two-Legged Shield Support under Impact Loading by Qing-liang Zeng, Zhao-sheng Meng, Li-rong Wan, Cheng-long Wang

    Published 2018-01-01
    “…The model took full account of the hydraulic-elastic deformation characteristics of the support, as a series spring-damper system was used to replace the leg and the equilibrium jack. …”
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  11. 1351
  12. 1352

    Hydrodynamic performance assessment of emerged and sub-merged semicircular breakwaters under random waves: An experimental and empirical study. by Faris Ali Hamood Al-Towayti, Hee Min Teh, Zhe Ma, Idris Ahmed Jae, Agusril Syamsir

    Published 2025-01-01
    “…The main objectives encompass understanding the behavior of the SBW model, developing empirical equations to estimate hydraulic characteristics, and enhancing coastal protection structures to facilitate the preservation and expansion of mangrove ecosystems. …”
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  13. 1353

    Numerical Simulation of the Nonlinear Flow Properties in Self-Affine Aperture-Based Fractures by Xin Zhou, Jianlong Sheng, Ruili Lu, Zuyang Ye, Wang Luo

    Published 2021-01-01
    “…For lower flow rate, the influence of the fractal dimension almost can be ignored, but the linear coefficient increases and the hydraulic aperture decreases with increasing standard deviation of the aperture, respectively. …”
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  14. 1354

    RESEARCH ON RIGIDITY & STRENGTH ANALYSIS OF FRANCIS RUNNER AND IMPROVEMENT MEASURES by ZHAO DaoLi, WANG HuaYou, WU ZiJuan, LIANG WuKe, NAN HaiPeng, GUO PengCheng, SUN WeiPeng

    Published 2015-01-01
    “…For the problem of excessive stresses in the runner after hydraulic turbine reformation,two solutions are put forward in this paper,which are the extension of the outlet edge of the blade near the crown and applying reinforcing triangular piece. …”
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  15. 1355
  16. 1356

    Analysis of Thermal Stimulation to Enhance Shale Gas Recovery through a Novel Conceptual Model by Liang Xue, Cheng Dai, Lei Wang, Xiaoxia Chen

    Published 2019-01-01
    “…The complex geometry of fracture network due to hydraulic fracturing can also be considered. A series of synthetic tests are designed to demonstrate the model performance. …”
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  17. 1357
  18. 1358

    Characterization of Transport-Enhanced Phase Separation in Porous Media Using a Lattice-Boltzmann Method by Andrea Parmigiani, Paolo Roberto Di Palma, Sébastien Leclaire, Faraz Habib, Xiang-Zhao Kong

    Published 2019-01-01
    “…Here, we present pore-scale lattice-Boltzmann simulations to investigate the hydrodynamical response of a porous system to the emergence of non-wetting droplets under background hydraulic gradients. A wide parameter space of capillary number and fluid saturation is explored to characterize the droplet evolution, the droplet size and shape distribution, and the capillary-clogging patterns. …”
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  19. 1359
  20. 1360

    Study on Ecological Security Assessment of Dongjiang River Basin in Jiangxi Province Based on PSFR Model by LIU Huili, ZHA Dongping, FENG Minglei, WAN Ying

    Published 2021-01-01
    “…In order to find out the ecological security situation of Dongjiang River Basin in Jiangxi Province,and formulate targeted ecological protection measures for protecting the clear water of the Dongjiang River,this paper determines the weight of indexes through the “Pressure-State-Function-Risk”(PSFR) model and analytic hierarchy process (AHP),establishes and optimizes the ecological security assessment system of Dongjiang River Basin in Jiangxi Province,and combines with “3S” technology and expert support system to evaluate the ecological security of Dongjiang River Basin in Jiangxi Province.The results show that:The ecological security index (ESI) of Dongjiang River Basin is 74.80,and the ecological security state of the Dongjiang River Basin is relatively safe.The main environmental problems in the river basin are the disconnection of the river system,the failure of the water environment quality to reach the standard,the reduction of the aquatic biological resources and diversity,etc.The severe human activities,the high density of hydraulic structures,the potential pollution of mining and orchard development,the degradation of important habitat area,the degradation of wetland area and the weakening of watershed ecological service function are the causes.On the basis of the assessment,the main factors affecting the ecological security of the river basin are put forward in this paper,which provides technical basis for the formulation of the next protection plan,and the index system has a strong reference significance to the fine management of ecological risk control in other basins.…”
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