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1
Content available Lengthwise finning surface as the method of influence on the flow separation in diffusers
Zaryankin A., Rogalev A., Lisin E., Khudyakova V.
Journal of Applied Mathematics and Computational Mechanics
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2017
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Vol. 16, nr 1
127--138
EN
The paper deals with the analysis of power factors acting within the boundary layer for different types of flow: convergent, gradientless and diffuser. Based on the considered formation mechanism of boundary layer separation, a hypothesis about the possible influence on structure and character of a separated flow by changing the gradient of the tangential stresses in the boundary layer was proposed. This impact is proposed to realize by means of the longitudinal finning of diffuser. Verification of the concept is performed on the basis of numerical flow investigation and available experimental data.
2
Content available Two-tier low pressure cylinders for condensing steam turbines
Zaryankin A.
Transactions of the Institute of Fluid-Flow Machinery
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2014
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nr 126
123--130
EN
The paper deals with new construction of low pressure cylinder (LPC) for condensing steam turbines. The flow path of these cylinders is formed on the base of new two-tier stages. As opposed to well known Baumann’s stages newer two-tier stages is a combination of two independent stages with own blades set. Such construction allows to decrease the number of LPC in the existing turbines or to ensure their operation with very high vacuum in the condenser or increases in 1.5 times power capacity of new turbines without increasing of the last stage blade length and LPC number.
3
Content available remote Prospect and technical possibility of the passage to hybrid nuclear power plants with outer steam superheater
Zaryankin A., Rogalev N., Rogalev A., Arianov S.
Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
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2011
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nr 140
235-244
EN
The power plant thermal diagram where wet steam after nuclear steam-generator plant is superheated in the fossil-fueled outer steam superheater is considered.
4
Content available remote Super powerful steam superheaters and turbines for hybrid nuclear power plants
Zaryankin A., Lyskov M., Arianov S., Rogalev A.
Journal of Power Technologies
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2011
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Vol. 91, nr 4
191-197
EN
The paper deals with the problem of the passage to hybrid nuclear power plants at the expense of outer steam superheating after nuclear steam-generating plant up to temperature equals to 600°C. For the practical realization of such power unit it's required to construct new super powerful steam superheater and new high temperature steam turbine with power capacity equals to 1.700–2.000 MW. The fundamental solutions of these difficult technical problems are considered in the paper.
5
Content available remote New equipment layouts of combined cycle power plants and their influence on the combined cycle units performance
Zaryankin A., Mger A., Rogalev A.
Journal of Power Technologies
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2011
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Vol. 91, nr 4
206-211
EN
New layout diagrams of combined-cycle power plants, in which some of air compressor stages are rotated not by a gas turbine but by a steam one, are considered. It's showed that if the air compression ratio in the compressor is decreased, the combined-cycle plant efficiency and output power increase; and at some compression ratio increase the combined-cycle power plant (CCPP) can operate with a fully dedicated steamturbocompressor unit.
6
Content available remote Hybrid electric power installations with high temperature steam turbines and hydrogen steam superheating
Zaryankin A., Sedlov A., Arianov S., Rogalev A.
Archiwum Energetyki
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2010
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nr 1/2
207-221
EN
In the paper the possibility to develop a high temperature steam turbine by means of utilization of external steam superheating device is considered. The proposed device uses combustion heat of fossil fuels or hydrogen. The idea can be applied to nuclear power plants or the combined cycle plants.
PL
W pracy przedstawiono możliwość uzyskania wysokotemperaturowej turbiny parowej poprzez zastosowanie niezależnego źródła przegrzania pary za pomocą ciepła spalania paliw kopalnych lub wodoru. Efekt ten można zastosować w elektrowniach jądrowych bądź w blokach gazowo-parowych.
7
Content available remote Turbine of nuclear power plant with outer steam superheater
Zaryankin A, Arianov S, Rogalev N, Rogalev A
Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
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2008
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nr 133
383--389
EN
Schematic diagram of nuclear power plant (NPP) is considered where after reactor saturated steam is overheated in outer superheater at the expense of combustion heat of organic fuel.
8
Optimization of the exhaust manifolds and control valves of the steam turbines on basis of physical simulation
Zaryankin A., Zaryankin V., Paramonov A., Noscov V., Arianov S.
Prace Naukowe Politechniki Warszawskiej. Konferencje
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2007
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T. 2, z. 25
721-729
EN
Some experimental research work has been presented as to the irnpact of the anti-vortical grids upon flowing process within exhaust manifolds and control valves of the steam turbines. The effect of the anti-vortical grids on any explored items being vibrated has been considered along with some relevant values of the pressure pulsation within a walve and pipeline furthermore. A significant reduction of this pulsation under grids' installation has been revealed as well as the impact of these grids on the exhaust manifold efficiency. The grids have positively influenced on some energy losses within the exhaust manifold and also on relevant dynamie force values affecting the manifold rear wall.
9
Content available remote Functional Characteristics of the Sublayer Interface in a Turbulent Boundary Layer
Zaryankin A., Arianov S., Shalhoub T.
Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
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2005
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nr 128, vol. 2
597--604
EN
Theoretical and experimental investigations of the turbulent sublayer interface present a special section in the general fluid flow dynamics and are fundamentally solving practical problems of a real physical picture of the fluid flow in different types of flow channels. In those investigations, a special attention is paid to the structural research of the turbulent sublayer interface as the development of the turbulent boundary layer occurs at streamlined walls of the majority of the industrial flow channels and it is quite non-homogenous in structure.
10
Comparative appraisal of control valves vibration conditions, installed on turbines K-200-130 LMZ
Zaryankin A., Arianov S., Paramonov A., Gotovtsev A.
Prace Naukowe Politechniki Warszawskiej. Konferencje
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2005
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z. 24
375--388
EN
Under consideration are constructions of the control valves, which are used on the turbines K-200-130 LMZ, with their modifications. You are given data concerning the level of pulsations present at stems of the model valves, and date on vibration of some in-situ valves of different designs.
11
Studies of Gtu exhaust nozzles furnished with annulardiffusers
Zaryankin A., Zaryankin V., Zatzepin M., Zaryankin V.
Prace Naukowe Politechniki Warszawskiej. Konferencje
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2003
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z. 23
391--398
12
Influence of steam turbines regulating valves' shape on their vibrating and power characteristics
Zaryankin A., Simonov B., Paramonov A., Korotkov V.
Prace Naukowe Politechniki Warszawskiej. Konferencje
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2001
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z. 21
325-334
EN
The article is devoted to the problem of a choice of the shape of regulating valve providing absence of appreciable dynamic loadings on mobile elements of steam turbines' distribution system at all modes of their work.
13
Content available remote On some problems of secondary losses reduction and numerical simulation of flows in turbomachinery cascades
Zaryankin A., Fischer Y., Paramonov A., Rossikhin S.
Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
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1999
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nr 115
507--512
EN
The novel approach to the secondary losses reduction is considered. The conception of aerodynamical leading edge formed by V-shaped cutting is offered. The computational results and experimental investigation data confirm the cutting use effectiveness.
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