INVESTIGATION OF THE HYDRAULIC EFFICIENCY OF SAND - NATURAL EXPANSIVE CLAY MIXTURES. Abdullah A. Shaker. 1. and Tamer Y. Elkady. 1 2. 1 . Abdullah Bugshan Research Chair in Expansive Soils Civil Engineering Department, College of
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The addition of a friction modifier to an ashless hydraulic fluid increased the efficiency of the motors at low speed. Energy-dispersive X-ray spectroscopy (EDX) analysis of motor
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2014.4.15 PDF Hydraulic motor efficiency does not depend upon viscosity alone. Under low-speed, high-torque conditions, hydraulic
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2021.6.28 This article investigates the suction flow characteristics in a passive inertance hydraulic converter featured by the check valve and
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2023.12.1 Thereafter, hydraulic experiments are conducted to investigate the impact of HPS geometry on hydraulic performance (efficiency, hump margin, S margin and
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2018.8.29 In this paper, we theoretically analyze and describe our investigation of the efficiency of the hydraulic system by simulation and model testing of the combined
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2021.6.22 Empirical equations are presented to relate the hydraulic efficiency and influencing factors. This research is useful for understanding continuous transverse
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2023.6.1 Results indicate that with the improvement of the rotating speed, the curves of the head and the efficiency rise and shift to the right, the pressure difference on both
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2013.10.11 Zhang Z. Flow interactions in Pelton turbines and the hydraulic efficiency of the turbine. Proc Inst Mech Eng 2007; 221: 343–357. Crossref. Google ...
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2015.11.1 Knowing the efficiency of a hydraulic turbine has important operational and financial benefits to those who operate a plant. Historical efficiency and other data
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2020.9.15 The efficiency curves of the lower and upper turbines curve showed the same trend for the output power curve (Figure 12). The highest efficiency of the current turbines tended to increase with the increase in the flow rate and TSR until it reached 61.2% and 47.3% for the lower and upper turbines, respectively; thereafter, the efficiency
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2012.12.9 In this paper, quantitative measures for the assessment of the hydraulic excavator digging efficiency are proposed and developed. The following factors are considered: (a) boundary digging forces allowed for by the stability of an excavator, (b) boundary digging forces enabled by the driving mechanisms of the excavator, (c) factors
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2021.6.28 Investigation of suction flow characteristic in the inertance hydraulic converters for efficiency improvement Xiaoming Chen, Yuchuan Zhu, Travis Wiens, Doug Bitner, Minghao Tai, and Yulei Jiang Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 2021 236 : 1 , 3-25
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2017.1.5 In this paper, the hydraulic and heat-transfer properties of two sets of artificially fractured granite samples are investigated. First, the morphological information is determined using 3D ...
Read Morehydraulic efficiency of sedimentation tanks. In that paper, they aim to investigate the effects of the depth and wind on the water's surface on the hydraulic efficiency of the sedimentation tanks in water and wastewater treatment plants. A verified two-dimensional numerical study was performed to evaluate the hydraulic performance of series ...
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2015.9.3 This paper describes an investigation of the effects of fluid properties on hydraulic motor efficiency through experimentation and modeling. Synthetic ester, straight-grade mineral oil, and VI improved hydraulic fluids were evaluated. Fluid properties, including viscosity, shear-stability, density, and traction coefficients, were characterized.
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2022.4.22 Based on the theoretical analysis and experimental investigation, the following conclusions may be drawn. 1. The compression and expansion of hydraulic oil is the dominant factor affecting volumetric efficiency. The oil compressibility could cause about a loss of 37% of volumetric efficiency compared to 2.4%, 18%, and 1% for losses
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2023.1.19 As one of the important equipment for pumping groundwater, how to improve the operation performance of deep well pump has been a research hotspot. At present, most of the deep well pump hydraulic design research mainly focuses on the low speed condition, and there is still a lack of systematic research on the internal flow theory
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2012.6.2 Every hydrostatic system requires a pump and a motor as its major components. Therefore, the operating parameters of the pump and the motor in a hydrostatic system are critical to the overall performance of the system. This paper evaluates the overall efficiency of the hydrostatic system based on the operating
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2016.2.23 Applications of computational fluid dynamic (CFD) techniques to hydropower have increased rapidly in the last three decades. The majority of the experimental investigations of hydraulic turbines were supported by numerical studies and this has become a standard practice. In the paper, applied numerical techniques and flow
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Hydraulic deep drawing presses are widely used for industrial sheet metal forming today. Small manufacturers of drawn parts and suppliers of the automotive industry especially appreciate these machines because of their high flexibility in process design. But the energy efficiency of modern hydraulic presses is nearly unknown due to a lack of experimental
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2018.6.23 The efficiency of pond and constructed wetland (CW) treatment systems is influenced by the internal hydrodynamics and mixing interactions between water and aquatic vegetation. In order to contribute to current knowledge of how emergent real vegetation affects solute mixing, and on what the shape and size effects are on the
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2020.7.24 In order to investigate the influence of adjustable inlet guide vanes on the hydraulic performance of axial-flow pump and impeller, the axial-flow pump with different inlet guide vane adjustable angles was simulated based on the RNG k-ε turbulent model and Reynolds time-averaged equations. The multivariate non-linear regression prediction
Read More2022.2.15 The scope of the paper is to analyse the different similarities of air entrainment among the hydraulic jumps, plunging jets, and plunging breaking waves and to discuss current practices. The measured data are reexamined and scrutinised to investigate the gas exchange phenomena through an air-water interface. In particular, oxygen
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2021.10.29 DOI: 10.1021/acs.energyfuels.1c02569 Corpus ID: 240243300; Numerical Investigation of the Gas Production Efficiency and Induced Geomechanical Responses in Marine Methane Hydrate-Bearing Sediments Exploited by Depressurization through Hydraulic Fractures
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2020.6.27 Different strategies for improving the energy efficiency of a power hydraulic system have been reviewed in this article. The energy-saving scheme is classified into three categories: System design, Improving components or product functions and Loss reduction. The sub-categories of energy-saving strategies are discussed briefly.
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2019.8.10 Accurate estimates of aquifer parameters are necessary for effective groundwater management and for geotechnical engineering applications. Pumping tests may be employed to estimate the hydraulic conductivity in leaky aquifer/aquitard systems. This work introduces a hybrid algorithm with global search capacity (the Genetic
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2023.6.1 To investigate axial flow pumps’ performance characteristics, NUMECA software is selected to perform numerical simulation at four rotating speeds (1380, 1840, 2300, and 2530 r/min) based on the Spalart-Allmaras turbulence model. The relationship curves of flow-head and flow-pump efficiency, static pressure distribution on blade
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2022.2.14 In this study, the flow and pressure drop in hydraulic filters were investigated experimentally and numerically. Although the main function of this device is to filter oil, it has many other ...
Read More2016.1.15 Lozza and Merlo [23] discussed the results of an extensive investigation about the performance of various fin configurations. Among the various improved fin surfaces, wavy fins have been widely employed in HVACR industries. Wavy fins are very special fin patterns that are developed to ameliorate the thermo-hydraulic performance.
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