The influence of operation mode of steam turbine on the loss of pressure in chamber for the control stage has been investigated. The results of studies performed using CFD-simulation and other software systems.

Keywords:
equalizing chamber, the control stage, pressure loss, the operating mode.

Boіko A.V., Usaty A.P., Avdіeіeva E.P. The influence of operation mode of steam turbine on the loss of pressure in chamber for the control stage has been investigated. The results of studies performed using CFD-simulation and other software systems.. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 6-11.

In this article, description is given of the main and auxiliary equipment of the power & cavitation test rigs ЭКС-15 and ЭКС-30 in the hydro machinery laboratory belonging to the Institute of Mechanical Engineering Problems at Ukraine’s National Academy of Sciences. It has been shown that hydraulic characteristics of the test rigs and applied measuring instruments, as well as applied calibration procedures of primary sensing elements provide for such precision of measurements that corresponds to the requirements of the Code IEC 60 193: Model Acceptance Tests of Hydro Turbines and Reversible Hydraulic Machines.

Keywords:
Power & cavitation test rig, measurement method, measurement error, calibration procedure.

Veremeenko I.S., Rusanov A.V., Dedkov V.N., Agibalov E.S., Gladyshev S.V. Development of experimentation facilities for hydro turbine engineering in the Institute of Mechanical Engineering Problems at Ukraine’s National Academy of Sciences. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 12-21.

Methods of synthesis of the minimal systems and schemes of hydropneumounits are presented.

Keywords:
the hydropneumounit, synthesis, a control system, the scheme, activity graph, system of the equations, decomposition of the equations.

Cherkashenko M.V. Synthesis of the minimal schemes of hydropneumounits. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 22-31.

Modern control systems of hydropneumounits are presented, recommendations on their use are given.

Keywords:
the hydropneumounit, a control system, the scheme, designing, the equipment.

Vure B.A., Gordyuhin A.A. Systems of hydropneumounits. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 32-35.

Herein, consideration has been given to design calculation peculiarities of longitudinal oscillations of rotors on vertical-shaft hydraulic units, and an example of their application has been considered with regard to Kamskaya HPP modernization aimed at elimination of increased vertical vibrations of the hydraulic unit support assembly.

Keywords:
Hydro turbine, design calculation, natural rotor oscillations, FEM (finite element method).

Veremeenko I.S., Andryuschenko S.A. Estimation particularities of longitudinal oscillations at hydraulic unit rotor. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 36-40.

The results of the design study of viscous flow in spiral casing, stay ring, guide vane Kaplan turbine PL20 Kremenchug HPP are presented. Mathematical modeling of flow made on the basis of numerical integration of the Reynolds equation and the two-parameter model of turbulence Menter (SST). The calculations were performed using the software package FlowER-U. The analysis of the structure of the flow and energy loss in the elements of the supply turbines Kremenchug HPP.

Keywords:
mathematic modeling, viscid flow, spiral casing, stay ring, guide vane, losses of energy

Rusanov A.V., Linnik A.V., Suhorebryy P.N., Horev O.N., Ryabov A.V. Mathematical simulation of fluid flow and analysis of flow characteristics in Kaplan turbine input of Kremenchug HPS. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 41-48.

The article deals with the issue of increasing the efficiency of hydraulic units by improving the workflow of new types of hydraulic turbines to a range heads 30-1000 m.

Keywords:
hydraulic turbine, runner, flowing part, power, head.

Potetenko O.V., Drankovskiy V.E., Krupa E.S., Vahrusheva O.S. Improvement of work processes of hydraulic turbines with new design concept for a different range of discharge heads. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 49-57.

The close method of calculation of kinematics parameters of stream is expounded in the vicinity of entrance and output edges of runner of Francis turbine. Along with the up-diffused parameters basic theoretical dependences over, describing the kinematics of spatial stream.

Keywords:
Francis turbine, runner, hydrodynamic characteristics, flow space.

Kolychev V.A., Tynyanova I.I. A method of calculation of kinematics parameters of flow spaces of Francis turbines. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 58-68.

The article discusses a phased approach to design leecher nodes as objects of multi-objective optimization. A given displacement is introduced into the model as a criterial psevdokritery limitation.

Keywords:
gear pump with internal engagement, pumping unit, a mathematical model, the criterion multi-objective optimization.

Lure Z.Ya., Gasyuk A.I. Stepwise multiple criteria optimization leecher nodes gear pumps internal gear for a given stroke volume. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 69-76.

The method and algorithm of solution of the coupled problem of non-stationary aerodynamics and elastic vibrations of blades in the three-dimensional ideal gas flow are presented. The numerical analysis of aeroelastic characteristics of blade row of modern aviation engine ventilator of compressor is executed.

Keywords:
compressor blade row, harmonic and coupled vibrations, aerodamping, flutter.

Gnesin V.I., Kolodyazhnaya L.V., Kolesnik A.A. Numerical analysis of aeroelastic behavior blade row of the fan compressor. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 77-87.

The original spherical joints for reasons of space. Hinges with magnetic field, which interact spherical surface shaft that attached to the rods and casings Pneumatic actuators. Joints are flexible housings, cavities are filled with ferromagnetic fluid. The paper presents the results of studies of hydrodynamic processes in ferromagnetic fluid. Allocated to the different nature of the fluid flow area. In the gaps between the spheres and surfaces of the shank is a plane-parallel movement of ferromagnetic fluid. In areas where surface areas in contact with the free ferromagnetic fluid is a fluid flow, such a fluid flow in the boundary layer. Vibratory motion of the hinge parts causes traffic circulation ferromagnetic fluid in the cavity of the housing. The main results of the research presented in the article is to determine the distribution of velocities and trajectories of particles moving ferromagnetic fluid characterizing hydrodynamic processes.

Keywords:
The original spherical joints for reasons of space. Hinges with magnetic field, which interact spherical surface shaft that attached to the rods and casings Pneumatic actuators. Joints are flexible housings, cavities are filled with ferromagnetic fluid. T

Yahno O.M., Strutinskiy S.V. Hydrodynamical processes of magnetic spherical hinges of spatial systems of drives in the form of moving Octofolinum structures. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 88-98.

This article depicts the comparative analysis of stability and antiflutter properties of hydraulic servo rudder drives with different kinematics that are used in aircraft control systems. This paper gives justified recommendations about the use in aircraft control systems of hydraulic servo rudder drives with inverted kinematics that have higher stability margin and antiflutter properties.

Keywords:
hydraulic servo rudder drive, control system of the aircraft, the stability margin, antiflutter properties, kinematics of the drive.

Zayonchkovskiy G.Y. Definition of stability factor and antiflutter properties of hydraulic servodrives of aircraft control systems. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 99-109.

This article highlights the methodic for determining the work efficiency reserves during the designing of pneumatic electromagnetic valves. This methodic is based on predictions of possible changes of technical condition of the valve elements under workload. Practical recommendations for increasing of work efficiency for this type of valves were created and introduced at JSCB «Kiev Central Design Bureau of Valves». Local standard «Methods of efficiency calculations for electromagnetic valves during design process» was created.

Keywords:
Solenoid Valve, two-position electromagnetic drive, degradation processes, friction, wear, fatigue, resource reliability.Solenoid Valve, two-position electromagnetic drive, degradation processes, friction, wear, fatigue, resource reliability.

Rikunich Yu.M. Definition of pneumatics electromagnetic valves serviceability reserve. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 110-120.

The results of experimental and computational studies of the axial pump with speed coefficient ns = 570. Estimated study was performed using a three-dimensional method. The good agreement between the calculated and experimental integral parameters.

Keywords:
axial pump liquid end, the integral parameters, calculation methods, the energy characteristics.

Svoboda D.G., Zharkovskiy A.A. Research the influence of fluid flow on the integrated characteristics of the axial pump with specific speed ns = 570. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 121-124.

The numerical research results of three-dimensional viscous fluid flow in the axial adjustable-blade (Kaplan) water turbine setting on a 20 m. water head are presented. Calculations are conducted using software package FlowER-U which based on the numerical integration of Reynolds averaged Navier-Stokes equations with Menter SST two-equation turbulence model. The flow pattern, averaged parameters and energy loses at setting elements. The improved blade runner is proposed.

Keywords:
numerical modeling, viscid flow, spiral casing, hydro-turbine, losses of energy.

Rusanov A.V., Suhorebryy P.N., Horev O.N., Kosyanov D.Yu., Gorodeckiy Yu.V. Numerical research and analysis of working process in flow part of Kaplan turbine. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 125-135.

The technique of determining the geometric parameters of the elements of displacement system, which allows to determine the quantitative characteristic changes of gaps between the teeth propellants hydraulic rotator planetary based on changes in the geometric parameters of the elements of his pressure system.

Keywords:
design methodology, hydraulic rotator planetary type pressure system, the cover, the guide, the working chamber, the clearance, center distance.

Panchenko A.I., Voloshina A.A., Panchenko I.A. Technique of designing of elements displace of systems hydrorotators of planetary type. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 136-145.

The article considers the issues on improvement of flow space in Francis turbine with the help of the developed complex programs. He used to design and calculation of blade system and for the construction of the prediction performance description for a Francis turbine. Provides a block diagram of the developed complex of programs and explains the methodology for the design of flow space in Francis turbine.

Keywords:
Francis turbine, flow space, runner, blade system.

Mironov K.A., Yakovleva L.K., Gulahmadov A.A. Improvement of flow space of Francis turbines. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 146-151.

The hydraulic module with the odnoshtokovy vertical hydraulic cylinder which rod focused up, throttles are located in pressure head and drain highways is considered, the direction of loading coincides with rod retraction. The mathematical model is presented. Calculation of transients is executed at various values of diameter of the piston. Results of calculations are given.

Keywords:
hydraulic drive, hydraulic cylinder, transients.

Ivanickaya E.P. To a question of the influence of the diameter of the piston of odnoshtokovogo hydraulic cylinder on the transient processes of the hydraulic modulusTo a question of the influence of the diameter of the piston of odnoshtokovogo hydraulic cylinder on the transient processes of the hydraulic modulus. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 152-156.

The schematic of electro-hydraulic mechatronic module of linear movement has been proposed. The complete mathematical model of its working process and the method of the dynamic synthesis have been developed. It allows to improve its dynamic properties and to get the desired characteristics. The correlation between the parameters of movement of the output link of executive mechanism of the mechatronic module of movement and current management of the proportional solenoid of control valve has been established.

Keywords:
the mechatronic module, the mathematical model, the dynamic synthesis, the proportional solenoid, the control valve.

Andrenko P.M., Dmitrienko O.V. Dynamic synthesis of the mechatronic module of motion. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 157-163.

Within the bounds of method of undivided decomposition of equations for synthesis of minimum schemes of hydropneumoaggregates the algorithm that allows to shorten the enumeration of possibilities when choosing the schemes of decomposition is offered.

Keywords:
entries function, undivided decomposition, remaining functions, distributor, function minimization, logical element.

Polushkin K.A. Synthesis algorithm of schemes of hydropneumounits. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 164-169.

The pulsations and vibrations characteristics of the model hydroturbine have been analyzed. The computational and experimental studies of the natural oscillations of the rotor turbine have been performed. The comparison spectrograms of hydraulic disturbing forces and spectrograms of vibration design model unit have been performed.

Keywords:
model tests, pressure pulsation of the vortex bundle, vibration, natural frequency the hydrodynamic exciting force spectrum.

Ryabov A.V., Katasonov A.E., Bondarenko A.V., Trubaev A.I., Vodka A.A., Ulyanov Yu.N. The pulsation and vibration joint test model hydraulic turbine PL-20. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 170-174.

In article the complex of programs of calculation of parameters of shtangovy pump installation for providing a necessary output of a well and reliability of the pump equipment is considered.

Keywords:
well, pump, column of bars, oil, gas-liquid mix, output, saturation pressure.

Shevchenko N.G., Koval E.S., Shudrik A.L. Complex of programs of calculation of parameters of shtangovy pump installation. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 175-179.

The paper offers a shell-type deformable packer with remote chamber of combustion with a throttle-diaphragm. For a radial deformation of the shell packer used explosive energy propellant charge. The packer is designed for separation of strata in oil and gas wells. The ways of increase of reliability of work of a packer cover.

Keywords:
paker, layer, mining hole, boring solution.

Rimchuk D.V., Cibulko S.V. Optimization of process of radial deformation of an environment explosive wall packer. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 180-184.

Short-story historical experience of development of by hydraulic fluid power is resulted and modern achievements are rotined in realization of row of important technical tasks.

Keywords:
hydraulic fluid power, pumps and hydromotors, technical level.

Avrunin G.A., Moroz I.I. Sages of development and achievement of hydrodrive volumetric modern. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 185-191.

The article analyzes a workflow of the small-sized axial flow stage (ns = 250–400) with blades of small aspect ratio. Refined equations of total hydraulic loss for these parts were received. Accuracy and reliability are confirmed by numerical simulation and physical experiment.

Keywords:
borehole pump, axial-flow pump, workflow, numerical simulation, head losses, low aspect ratio blades.

Gusak O.G., Nenya V.G., Matvienko O.A. Working process of small-sized axial step borehole tool of the pump. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 192-197.

The aerodynamical characteristics of radiator compartment of racing car KhADI X-31 are studied numerically and experimentally. Numerical simulations were done by solution of a coupled internal and external aerodynamical problem.The effective shape of radiator compartment was proposed.

Keywords:
aerodynamics of racing car, radiator compartment, numerical simulation.

Avershin A.G., Solodov V.G. The development of effective shape of air intake for racing car KHADI 31. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 198-203.

Developed spatial mathematical models for predicting low-pressure fluctuations on the motion of an arbitrary number of vortex bundles in the suction pipe and the method of construction of pulse characteristics. Geometrical parameters of the vortex swirls and their intensity identified.

Keywords:
the Francis turbine, a flowing part, draft tube, vortex swirl, pulsations of pressure, pulsations the characteristic, mathematical model.

Zavyalov P.S., Kuhtenkov Yu.M., Podvoyskiy Yu.A. Mathematical modeling of low-frequency pressure pulsations in the draft tube of turbines and reversible hydraulic machines. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 204-213.

The mathematical model of an ideal fluid, which takes into account the structure of the turbulent flow and the boundary conditions of a real fluid is proposed.

Keywords:
Navier-Stokes equations, incompressible fluid, turbulent flow, the existence of uniqueness of solution.

Kostornoy S.D. Fluid flow model that takes into account features boundary conditions of actual fluid. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 214-221.

In article the questions connected with calculation of autonomous safety valves, applied to protection high production wells from open emissions and fountains in process to an oil recovery and gas are taken in detail up. Recommendations for choice autonomous safety valves with flapper or with spherical shutters are given. The experimental diagram of adjustment of safety valves of both types on closing is presented.

Keywords:
well, autonomous safety valve, packer, critic flow, experimental diagram, monogram for definition of parameters.

Tsensiper A.I., Zelenskiy M.V. Safety and technique defense of the high wells. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 222-227.

The questions of calculation of parametric reliability of hydropneumounits are considered. The generalized algorithm of calculation of parametric reliability of hydropneumounits is offered in the environment of Mathcad software, that allows on results a calculation grounded to accept progressive structural and technological decisions for the increase of reliability of elements, thus ensuring the optimum indexes of new construction the same.

Keywords:
parametric reliability, expected value, average quadratic deviation, quantile of normal distribution

Fateeva N.N. Algorithm for estimating of reliability of hydropneumounits. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 228-232.

Синтез минимальных схем гидропневмоа грегатов”

Keywords:
pneumatic valves, seals, valves, damping.

Barilyuk E.I. Damping role at decreasing of wear speed of sealing surfaces of space – saving electromagnetic valve. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2014. No. 1. Pp. 233-237.