Solving the hydrodynamical tasks using CFD programs

Rezvaya, Kseniya; Krupa, Evgeniy; Shudryk, Aleksandr; Drankovskiy, Viktor; Makarov, Vadym

doi:10.1109/ieps.2018.8559548

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…A mathematical model has been developed [42] and numerical simulation [43] of the vibration-aspiration separation process has been carried out. The possibility of carrying out hydrodynamic calculations in hydraulic machines using CFD software packages [44] was considered and a three-dimensional CFD transitional model for an orbital engine was proposed [45], as well as a computational model of a gear train, which allows the finite element method to determine the effect of mechanical and hydraulic loads on strength [46]. A program has been developed for designing such gears, taking into account the equations of hydrodynamics [47].…”

Section: Introductionmentioning

confidence: 99%

European Green Deal: Improving the Efficiency of Using Planetary Hydraulic Machines

Hutsol

2023

Energies

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Research is devoted to the use of energy-efficient hydraulic motors in running modules for mechatronic systems of construction, road, municipal, agricultural, railway and other self-propelled machines; robots are used in various branches of the European economy and can contribute to the practical implementation of the philosophy of the “European Green Deal”. As a result of this research, design schemes and a mathematical apparatus have been developed that allow determining the rational force in the contact zone of the movable and fixed distributors. In order to determine the geometric parameters of the stepped surfaces of the movable and fixed distributors, which ensure the formation of an oil film in the contact zone, a structural-functional diagram of the mathematical model has been developed, which makes it possible to obtain a quantitative estimate of the increase in the productivity of the distribution system. The conducted studies have established that with rational design of the distribution system elements by reducing the clamping force by 3...5% in the distribution system, leakage through the end gap is reduced by 26%. Reduction of leakage in the contact zone allows an increase in productivity of the distribution system of 2.4% by increasing the volumetric efficiency (reducing losses).

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Section: Introductionmentioning

confidence: 99%

European Green Deal: Improving the Efficiency of Using Planetary Hydraulic Machines

Hutsol

2023

Energies

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“…Simao et al [33] used the CFD method to analyze the velocity profiles in a pump as a turbine and verified by the ultrasonic doppler velocimetry. Rezvaya et al [34] used CFD programs to solve the hydrodynamical tasks on the example of the bulb-type turbine, the reversible hydraulic machine, and the centrifugal submersible pump. Gunjo et al [35] investigated the absorber plate and outlet water temperature of a solar flat plate collector with a straight riser and header arrangement using a three-dimensional CFD.…”

Section: Introductionmentioning

confidence: 99%

Experiment and Numerical Simulation on Hydraulic Loss and Flow Pattern of Low Hump Outlet Conduit with Different Inlet Water Rotation Speeds

Jiang

Wang

et al. 2022

Energies

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The rotation speed of water at the inlet of the low hump outlet conduit has a great effect on its hydraulic performance. Therefore, the influence of different inlet water rotation speeds on hydraulic loss and flow pattern of low hump outlet conduit is studied in this paper. By solving RANS equations and the RNG k-ε turbulence model, the hydraulic loss and 3D flow field of the low hump outlet conduit were calculated under different inlet water rotation speeds. To verify the numerical results, the model tests of low hump outlet conduit with different guide vanes were conducted. The results show that along with the growth of inlet water rotation speed, the hydraulic loss of outlet conduit will firstly decrease by degrees and then increase dramatically, the vortex location moves from the whole bottom of the descent segment to the right bottom of descent segment and the vortex area becomes smaller, the flow pattern of the whole conduit is improved obviously. The hydraulic loss and flow field of numerical simulation are consistent with those of the model test. Because of its great influence on hydraulic performance, inlet water rotation speed must be taken into consideration in the hydraulic optimization design of guide vane and low hump outlet conduit.

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Improvement of the Angular Arrangement of Distribution System Windows When Designing Planetary Hydraulic Machines

Voloshina

Panchenko

Boltyansky

et al. 2021

Lecture Notes in Mechanical Engineering

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Solving the hydrodynamical tasks using CFD programs

Cited by 8 publications

References 3 publications

European Green Deal: Improving the Efficiency of Using Planetary Hydraulic Machines

European Green Deal: Improving the Efficiency of Using Planetary Hydraulic Machines

Experiment and Numerical Simulation on Hydraulic Loss and Flow Pattern of Low Hump Outlet Conduit with Different Inlet Water Rotation Speeds

Improvement of the Angular Arrangement of Distribution System Windows When Designing Planetary Hydraulic Machines

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