scholarly journals Simulation research on hydraulic characteristics of conical X-shaped flaring gate piers in lock chamber based on CLSVOF method

2021 ◽  
Vol 781 (4) ◽  
pp. 042060
Author(s):  
Yang Xue ◽  
Bo Wen ◽  
Yu Peng
Keyword(s):  
Hydraulic Characteristics ◽  
Simulation Research ◽  
Lock Chamber

Study on Hydraulic Characteristics of Interlocking Concrete Blocks with Ecological Flood-Control Function

2012 ◽  
Vol 518-523 ◽  
pp. 4552-4556
Author(s):  
Hai Jing Zhao ◽  
Dan Xun Li ◽  
Xing Kui Wang
Keyword(s):  
Flood Control ◽  
Mechanical Stability ◽  
Control Function ◽  
Low Cost ◽  
Hydraulic Characteristics ◽  
Simulation Research ◽  
Surface Protection ◽  
Concrete Blocks ◽  
Flood Period ◽  
New Type

Through simulation research on hydraulic characteristics of precast interlocking concrete blocks, the stress condition, overall stability, the effect of filling gravels into the holes of the blocks in the water flow during the flood period and the resistance parameters of the blocks were studied, a comprehensive analysis on the mechanical stability and the scour-resisting characteristics of the blocks was made, and then the requirement and the safety degree of the gravel filling were given. The experiment shows that compared with the surface protection of the conventional dyke projects, besides convenience for manufacture at low cost, this new type of protective revetment has such merits as higher anti-shear stress, better stability and permeability as well as improving ecological environment in river course.

MODELING THE HYDRAULIC CHARACTERISTICS OF DRAIN VALVE AND BURST FITTING OF AN AIRCRAFT ACCIDENT-RESISTANT FUEL SYSTEM

2020 ◽  
Vol 7 (3) ◽  
pp. 37-44
Author(s):  
KONSTANTIN NAPREENKO ◽  
◽  
ROMAN SAVELEV ◽  
ALEKSEY TROFIMOV ◽  
ANNA LAMTYUGINA ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Hydraulic Resistance ◽  
Hydraulic Calculation ◽  
Fuel System ◽  
Hydraulic Characteristics ◽  
System A ◽  
Ansys Cfx ◽  
Calculation Results ◽  
Scale Experiment ◽  
Aircraft Accident

The article discusses methods for determining the hydraulic resistance of units of an accident-resistant fuel system. A detailed description of the need to create such fuel systems for modern helicopters is given. The development of such systems today is impossible without the use of the method of mathematical modeling, which allows to qualitatively solve problems arising in the design process. To obtain accurate research results, it is necessary to have a complete description of all elements and assemblies of the system. Methods for determining the hydraulic characteristics of AFS elements using the drag coefficient, reference literature and CFD codes are considered. As the investigated AFS units, a drain valve and burst fitting were studied in the article. A hydraulic calculation of these AFS elements ware performed, the simulation results are presented in the ANSYS CFX software package. Also as the calculation results of bursting fitting, the pressure distribution fields of full and static pressure, velocity and streamlines are also shown. An experimental setup for validating the results obtained using the mathematical modeling method is considered, as well as a methodology for conducting a full-scale experiment to determine the hydraulic resistance of the unit. Materials have been prepared for inclusion in a one-dimensional mathematical model of an accident-resistant fuel system.

LAMINAR THERMO-HYDRAULIC CHARACTERISTICS IN FRACTAL TREE-LIKE MICROCHANNEL NETWORKS

2019 ◽  
Vol 46 (6) ◽  
pp. 509-523 ◽  
Author(s):  
Cong Li ◽  
Wei-Biao Ye ◽  
Shuguang Gong ◽  
Si-Min Huang ◽  
Yuxiang Hong ◽  
...  
Keyword(s):  
Hydraulic Characteristics

Stabilization of the Speed of the Hydraulic Motor Through Throttle Compensation for Volume Losses

2020 ◽  
Vol 26 (3) ◽  
pp. 126-130
Author(s):  
Krasimir Kalev
Keyword(s):  
Flow Rate ◽  
Hydraulic Drive ◽  
Pressure Change ◽  
Operating Conditions ◽  
Drive System ◽  
Inlet Pressure ◽  
Schematic Diagram ◽  
Hydraulic Characteristics ◽  
Hydraulic Motor ◽  
Flow Through

AbstractA schematic diagram of a hydraulic drive system is provided to stabilize the speed of the working body by compensating for volumetric losses in the hydraulic motor. The diagram shows the inclusion of an originally developed self-adjusting choke whose flow rate in the inlet pressure change range tends to reverse - with increasing pressure the flow through it decreases. Dependent on the hydraulic characteristics of the hydraulic motor and the specific operating conditions.

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