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Hydraulic performance
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This study presents a force control approach for an EHA system using a combination of a feedforward-based PID (FPID) controller and a grey predictor (GP), shortened as grey predictor-based feedforward PID Controller (GPFPID). The FPID controller is used to drive the system to desired targets. Meanwhile, the GP predictor takes part in estimating the output in the near future to optimize the controller parameters in advance and to create a compensating control signal corresponding to the system perturbations, consequently, improving the control performance.
4p
giangnhanly
02-10-2023
7
3
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This paper gives an illustration of using the computational fluid dynamics approach to investigate the movement of the solution inside the hand-washing chamber. The numerical results obtained from the numerical simulation demonstrate the hydrodynamic values, streamlines, and density of the solution. The ability to predict the handwashing chamber's hydraulic and cleaning performance efficiencies is essential for evaluating the operability and improving the further design.
6p
giangnhanly
02-10-2023
6
5
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This study is directed to understand the origin of that difference with a numerical simulation of the process. The mechanical behaviour of the materials was investigated in tension and hydraulic bulge test, out of comparison’s sake and to derive the hardening law over a strain range representative of the process. Finite element simulations are performed using the von Mises criterion coupled with isotropic hardening, to compare the predicted forming load and springback parameters with experimental values.
14p
viisac
15-09-2023
8
3
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This research proposes an advanced proportional-integral-derivative (PID) controller for position-tracking control problem of a pump-controlled Electro-Hydraulic System (EHS). Although conventional PID controller is a practically robust and easy-to-use method, it is difficult to maintain good control performance of such system which contains both high nonlinearities and unknown terms.
8p
vidoctorstrange
06-05-2023
8
3
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In the frame of Super-Critical Reactor In Pipe Test Preparation (SCRIPT) project in China, one of the challenge tasks is to predict the transient performance of SuperCritical Water Reactor-Fuel Qualification Test (SCWR-FQT) loop under some accident conditions. Several thermal–hydraulic codes (system code, sub-channel code) are selected to perform the safety analysis.
9p
vironald
15-12-2022
8
4
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In this article, the author has presented the effects of operating parameters of hydraulic fracturing as injection time, injection rate, leak-off coefficient, and reservoir porosity based on the 2D PKN-C fracture geometry accounting for leak-off coefficient, spurt loss in terms of power law parameters on economic performance by design of experiment (DOE) and apply a tool of response surface method with the recommended ranges of operating parameter in the field experience.
13p
vipagani
24-10-2022
5
3
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This paper proposed a PID controller for a semi-active suspension system with a hydraulic single-tube shock absorber. A quarter-car model with a sub-model of the single-tube shock absorber was used to perform the simulation. In comparison with the non-controlled system, the damping performance of the controlled system increased significantly.
8p
viporsche
25-10-2022
7
2
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This paper presents the geotechnical conditions, the ground improvement methodologyand quality control during construction. The control sequence is performed by vertical and then horizontal drilling holes. The method of control work after excavation (horizontal control) allows to confirm the quality of the treatment blocks and specifically the bonding between the treatment block and the diaphragm wall.
9p
vibentley
08-09-2022
18
4
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This paper focuses on building a theoretical method, based on the calculation of hydraulic losses to predict the energy performance of a Low-specific speed Pump as Turbine (PaT) quickly and accurately that supported for the PaT’s impeller design. The Euler equation is built with the analysis of hydraulic loss calculation and flow phenomena passing on the machine.
7p
vimelindagates
18-07-2022
5
2
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This paper presents the conceptual design of a 300 MWt small modular reactor (SMR) using fuel assemblies of the AP1000 reactor. Numerical calculations have been performed to evaluate a proper active core size and core loading pattern using the SRAC code system and the JENDL-4.0 data library.
6p
trinhthamhodang1218
14-03-2021
13
2
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The performance evaluation of hydraulically operated sorghum harvester was evaluated in different field and for different varieties of sorghum at western block and Sorghum research unit during harvesting season of 2011-12.
7p
trinhthamhodang1215
23-09-2020
19
1
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The experiment has been conducted to evaluate the hydraulic performance of the drippers fitted with drip irrigation system at experimental field of College of Agricultural Engineering under Dr. Rajendra Prasad Central Agricultural University, Pusa in Samastipur district (Bihar), India.
11p
nguaconbaynhay7
15-08-2020
9
1
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In simulation of fractured rock mass such as mechanical calculation, hydraulic calculation or coupled hydro-mechanical calculation, the representative element volume of fractured rock mass in the simulating code is very important and give the success of simulation works. The difficulties of how to make a representative element volume are come from the numerous fractures distributed in different orientation, length, location of the actual fracture network.
12p
kequaidan6
11-07-2020
13
0
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The main objective of this review is to show the reader the importance of the proper choice of an aero profile and its influence for the calculation during the design of rotor blades and the performance of hydrokinetic turbines.
12p
lucastanguyen
01-06-2020
12
1
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One of the easiest and efficient way of water conservation to solve drinking water scarcity is rooftop water harvesting. To evaluate the performance of the first flush with micromesh filter system, inflow and outflow of the rooftop water samples were analysed for pH, EC, TDS, SAL and TSS parameters. In general, the PH, electrical conductivity, and TDS of the roof water samples were within the drinking water standards and the first flush with micromesh filter system was found to reduce TDS values.
9p
chauchaungayxua6
26-06-2020
15
2
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Constructed wetlands (CWs) have been used to treat various types of wastewaters such as urban runoff, acid mine drainage, municipal, industrial, and livestock wastewaters. This study was conducted to evaluate the effectiveness of two constructed wetlands (surface and horizontal subsurface flows) for piggery wastewater treatment after biogas process. The wetland plant Phragmites australis Cav. was used in two CWs. The flow rate of the CWs was 100 liters/day with the hydraulic retention time (HRT) of 3 days.
9p
angicungduoc5
13-06-2020
23
3
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This paper presents the experiment results of the cycle work and overall performance of a new design of delivery valve in hydraulic ram. A hydraulic ram comprises of two non-return valves. They are well known as waste and delivery valves. Both mechanism propagate water hammer in cycle work of the hydraulic ram. In early designs, the water flow phenomenon occurring in the hydraulic ram operating process must be fully recognized for further analysis.
13p
cleopatrahuynh
01-06-2020
23
1
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The purpose of this paper is to model the operation of the Shutdown Cooling System (SDCS) for CANDU 6 nuclear power plants in case of LOCA accidents, using Flowmaster calculation code, by delimiting models and setting calculation assumptions, input data for hydraulic analysis and input data for calculating thermal performance check for heat exchangers that are part of this system.
7p
christabelhuynh
31-05-2020
17
1
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In the present work, the thermal hydraulic RELAP5-3D code was used to develop a model of this reactor. The model was performed using geometrical and material data from the Angra 2 final safety analysis report (FSAR).
8p
christabelhuynh
31-05-2020
19
0
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The paper covers the results of VVER core reflooding studies in fuel assembly (FA) mockup of 126 fuel rod simulators with axial power peaking. The experiments were performed for two types of flooding. The first type is top flooding of the empty (steamed) FA mockup.
11p
christabelhuynh
30-05-2020
34
1
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