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  1. 8 Polish Maritime Research
  2. 6 Journal of Polish CIMAC
  3. 3 Problemy Eksploatacji
  4. 2 Diagnostyka
  5. 2 Motrol. Motoryzacja i Energetyka Rolnictwa
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  1. 3 2023
  2. 2 2022
  3. 3 2021
  4. 1 2020
  5. 4 2019
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  1. 7 Serbin S.
  2. 6 Adamkiewicz A.
  3. 5 Wirkowski P.
  4. 4 Cherednichenko O.
  5. 4 Dzida M.
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1
Content available Damages To Structural Components And Unitsof A Gas Turbine Engine
100%
Lewitowicz J. , Wieczorek O. , Żyluk A.
Journal of Polish CIMAC
|
2009
|
tom Vol. 4, no 2
183-190
EN
Safe operational use of an technical system, depends on properties and characteristics thereof, external excitations, and the correctly performed process of operation/maintenance of this system. Unserviceability and failures/damages to the system are the most essential problems, which – if not identified on time – can result in an accident (a crash or failure). The issues of safety, unserviceability and failures/damages have been exemplified with those occurring to gas turbine engines.
2
Content available Investigations of the emission characteristics of a dual-fuel gas turbine combustion chamber operating simultaneously on liquid and gaseous fuels
80%
Serbin S. , Diasamidze B. , Gorbov V. , Kowalski J.
Polish Maritime Research
|
2021
|
tom nr 2
85--95
EN
This study is dedicated to investigations of the working process in a dual-fuel low-emission combustion chamber for a floating vessel’s gas turbine. As the object of the research, a low-emission gas turbine combustion chamber with partial premixing of fuel and air inside the outer and inner radial-axial swirls was chosen. The method of the research is based on the numerical solution of the system of differential equations which represent the physical process of mass and energy conservation and transformations and species transport for a multi-component chemically reactive turbulent system, considering nitrogen oxides formation and a discrete ordinates model of radiation. The chemistry kinetics is presented by the 6-step mechanism of combustion. Seven fuel supply operating modes, varying from 100% gaseous fuel to 100% liquid fuel, have been analysed. This analysis has revealed the possibility of the application of computational fluid dynamics for problems of dual-fuel combustion chambers for the design of a floating vessel’s gas turbine. Moreover, the study has shown the possibility of working in different transitional gaseous and liquid fuel supply modes, as they satisfy modern ecological requirements. The dependencies of the averaged temperature, NO, and CO concentrations along the length of the low-emission gas turbine combustion chamber for different cases of fuel supply are presented. Depending on the different operating modes, the calculated emission of nitrogen oxides NO and carbon monoxide CO at the outlet cross-section of a flame tube are different, but, they lie in the ranges of 31‒50 and 23‒24 mg/nm3 on the peak of 100% liquid fuel supply mode. At operating modes where a gaseous fuel supply prevails, nitrogen oxide NO and carbon monoxide CO emissions lie in the ranges of 1.2‒4.0 and 0.04‒18 mg/nm3 respectively.
3
Content available Investigation of the combustion processes in the gas turbine module of an fpso operating on associated gas conversion products
80%
Cherednichenko O. , Serbin S. , Dzida M.
Polish Maritime Research
|
2019
|
tom nr 4
149--156
EN
In this paper, we consider the issue of thermo-chemical heat recovery of waste heat from gas turbine engines for the steam conversion of associated gas for offshore vessels. Current trends in the development of offshore infrastructure are identified, and the composition of power plants for mobile offshore drilling units and FPSO vessels is analyzed. We present the results of a comparison of power-to-volume ratio, power-to-weight ratio and efficiency for diesel and gas turbine power modules of various capacities. Mathematical modeling methods are used to analyze the parameters of an alternative gas turbine unit based on steam conversion of the associated gas, and the estimated efficiency of the energy module is shown to be 50%. In the modeling of the burning processes, the UGT 25000 serial low emission combustor is considered, and a detailed analysis of the processes in the combustor is presented, based on the application of a 35-reaction chemical mechanism. We confirm the possibility of efficient combustion of associated gas steam conversion products with different compositions, and establish that stable operation of the gas turbine combustor is possible when using fuels with low calorific values in the range 7–8 MJ/kg. It is found that the emissions of NOx and CO during operation of a gas turbine engine on the associated gas conversion products are within acceptable limits.
4
Content available Mathematical modelling of marine power plants with thermochemical fuel treatment
80%
Cherednichenko O. , Serbin S. , Tkach M. , Kowalski J. , Chen D.
Polish Maritime Research
|
2022
|
tom nr 3
99--108
EN
The article considers the methodological aspects of the theoretical investigation of marine power plants with thermochemical fuel treatment. The results of the study of the complex influence of temperature, pressure, and the ratio of steam / base fuel on the thermochemical treatment efficiency are presented. The adequacy of the obtained regression dependences was confirmed by the physical modelling of thermochemical fuel treatment processes. For a gas turbine power complex with a thermochemical fuel treatment system, the characteristics of the power equipment were determined separately with further merging of the obtained results and a combination of material and energy flow models. Algorithms, which provide settings for the mathematical models of structural and functional blocks, the optimisation of thermochemical energy transformations, and verification of developed models according to the indicators of existing gas turbine engines, were created. The influence of mechanical energy consumption during the organisation of thermochemical processing of fuel on the efficiency of thermochemical recuperation is analysed.
5
Content available Gas Turbine Engines - Through Improved Maintainability To Improved Operational Readiness In Navy Helicopters
80%
Lewitowicz J. , Wieczorek O. , Żyluk A.
Journal of Polish CIMAC
|
2009
|
tom Vol. 4, no 2
177-181
EN
Reliability needs of the military focus primarily on operational readiness, longevity, supportability, robustness. That means product performance on demand, long useful life, repair ability and satisfactory performance over environmental extremes. Availability requirements of modern systems and equipment demand that designing for maintainability must be as important as designing for other performance characteristics.
6
Content available Investigations of the working process in a dual-fuel low-emission combustion chamber for an FPSO gas turbine engine
80%
Serbin S. , Diasamidze B. , Dzida M.
Polish Maritime Research
|
2020
|
tom nr 3
89--99
EN
This investigation is devoted to an analysis of the working process in a dual-fuel low-emission combustion chamber for a floating vessel’s gas turbine. The low-emission gas turbine combustion chamber with partial pre-mixing of fuel and air inside the outer and inner radial-axial swirlers was chosen as the object of research. When modelling processes in a dualflow low-emission gas turbine combustion chamber, a generalized method is used, based on the numerical solution of the system of conservation and transport equations for a multi-component chemically reactive turbulent system, taking into consideration nitrogen oxides formation. The Eddy-Dissipation-Concept model, which incorporates Arrhenius chemical kinetics in a turbulent flame, and the Discrete Phase Model describing the interfacial interaction are used in the investigation. The obtained results confirmed the possibility of organizing efficient combustion of distillate liquid fuel in a low-emission gas turbine combustion chamber operating on the principle of partial preliminary formation of a fuel-air mixture. Comparison of four methods of liquid fuel supply to the channels of radial-axial swirlers (centrifugal, axial, combined, and radial) revealed the advantages of the radial supply method, which are manifested in a decrease in the overall temperature field non-uniformity at the outlet and a decrease in nitrogen oxides emissions. The calculated concentrations of nitrogen oxides and carbon monoxide at the flame tube outlet for the radial method of fuel supply are 32 and 9.1 ppm, respectively. The results can be useful for further modification and improvement of the characteristics of dual-fuel gas turbine combustion chambers operating with both gaseous and liquid fuels.
7
Content available Thermal degradation process of semi-synthetic fuels for gas turbine engines in non-aeronautical applications
80%
Sarnecki J. , Białecki T. , Gawron B. , Głąb J. , Kamiński J. , Kulczycki A. , Romanyk K.
Polish Maritime Research
|
2019
|
tom nr 1
65--71
EN
This article concerns the issue of thermal degradation process of fuels, important from the perspective of the operation of turbine engines, especially in the context of new fuels/bio-fuels and their implementation. The studies of the kerosenebased jet fuel (Jet A-1) and its blends with synthetic components manufactured according to HEFA and ATJ technology, were presented. Both technologies are currently approved by ASTM D7566 to produce components to be added to turbine fuels. Test rig investigations were carried out according to specific methodology which reflects the phenomena taking place in fuel systems of turbine engines. The mechanism of thermal degradation process was assessed on the basis of test results for selected properties, IR spectroscopy and calculation of activation energy. The results show that with the increase of the applied temperature there is an increment of the content of solid contaminants, water and acid for all tested fuels. Thermal degradation process is different for conventional jet fuel when compared to blends, but also semi-synthetic fuels distinguished by different thermal stability depending on a given manufacturing technology.
8
Content available Influence Of Changes Of Axial Compressor Variable Stator Vanes Setting On Gas Turbine Engine Work
80%
Wirkowski P.
Journal of Polish CIMAC
|
2007
|
tom Vol. 2, no 2
511-517
EN
The paper deals with problem influence of changes settings variable stator vanes axial compressor of gas turbine engine on work parameters of compressor and engine. Incorrect operation of change setting system of variable vaness could make unstable work of compressor and engine. This situation is unacceptable because of mechanical overloads which could demage the engine. This paper presents theoretical analysis of situation described above and presents results of own researches done on real engine.
9
Content available Diagnostic Relations Between State Parameters And Operational Parameters Of Marine Gas Turbine Engine
80%
Adamkiewicz A. , Tomaszewski F.
Journal of Polish CIMAC
|
2007
|
tom Vol. 2, no 2
23-28
EN
This article presents the basis of construction of diagnostic relations between the technical condition of the object and diagnostic symptoms. Terms: “relation” and ”functional relations” describing diagnostic relations were defined. Using a one-rotor gas turbine engine as an example, construction of diagnostic relations for chosen operational parameters and the state of the engine, described by its power, has been shown.
10
Content available Research Of Variation Of Gas Turbine Engine Work Parameters Changes Equipped With Changeable Geometry Of Axial Compressor Flow Passage
80%
Wirkowski P.
Journal of Polish CIMAC
|
2008
|
tom Vol. 3, no 1
9-13
EN
The paper deals with problem influence of changes variable stator vanes axial compressor settings of gas turbine engine on work parameters of compressor and engine. Incorrect operation of change setting system of variable vanes could make unstable work of compressor and engine. This paper presents theoretical analysis of situation described above and results of own research done on real engine. The next there are presented results of mathematical modelling of changes of gas turbine engine work parameters during change of angle setting of axial compressor variable stator vanes but in the most wide angle range than in real research.
11
Content available remote Technology of electrochemical rotary machining of gas turbine engine blade elements
70%
Poletaev V. A. , Sokolov N. N. , Kozhina T. D. , Eroshk V. Y. , Manoshkin V. S.
Scientific Problems of Machines Operation and Maintenance
|
2012
|
tom Vol. 47, nr 2
53--63
EN
Modern automated production requires technologies to provide stability in machining procedures and the absolute repeatability of the quality parameters obtained on the parts produced. Without the development of a new level of ESM procedures, the generation and implementation of technological equipment, and its complex functioning, it is impossible to produce new generation GTE for modern civil and military aircraft, as well as ships and power plants. For this purpose, issues of the technology to be created for electrochemical rotary machining of GTE blading elements have been considered, including the following aspects: features of the technology of automated GTE compressor blades manufacture, kinematic schemes of work motions of tool electrodes, and constructions of tool electrodes for electrochemical rotary machining. New engineering solutions have been offered that considerably increase the efficiency of the rotary electrochemical machining of gas turbine engine blading elements.
12
Content available Snizhenie intensivnosti pul'sacionnogo gorenija v kamere sgoranija GTD ispol'zovanijem plazmennykh stabilizatorov
70%
Serbin S. , Mostipanenko A. , Kozlovskiy A.
Motrol. Motoryzacja i Energetyka Rolnictwa
|
2015
|
tom 17
|
nr 2
13
Content available Pyrolysis-derived waste polypropylene oils in gas turbine engines: a comprehensive performance and emission study
70%
Suchocki T. K. , Kazimierski P. , Januszewicz K. , Lampart P. , Zaniewski D. , Klimaszewski P. , Witanowski Ł.
Archives of Thermodynamics
|
2023
|
tom Vol. 44, no 4
157--183
EN
Addressing the burgeoning issue of polymer waste management and disposal, chemical recycling, specifically the production of highquality oil, presents an enticing solution. This research paper delves into the process of plastic waste pyrolysis, focusing on polypropylene, and thoroughly examines the physico-chemical properties of the resulting pyrolytic oil. The oils, obtained from waste plastic pyrolysis (referred to as WPPO), are then blended with kerosene and utilized as fuel for a gas turbine engine. The primary objective of this investigation is to ascertain how the blend composition influences the performance and emission parameters of the micro gas turbine. In our findings, it was observed that all tested waste plastic pyrolysis blends displayed a trend towards escalating regulated emissions such as nitrogen oxides (NOx) with an average increase of 26% for polypropylene pyrolysis oil (PPO). The emission index (EI) for carbon monoxide (CO) was found to be relatively consistent across all fuel blends tested in this study. Interestingly, when considering the thrust specific fuel consumption (TSFC) within the EI calculation, blends of aviation kerosene and plastic oil showed lower values in comparison to the pure Jet A-1 fuel. Furthermore, an augmentation in the proportion of WPPO in the blends consequently led to an elevation in the exhaust gas temperature (an average increase of 8.7% for PPO). Interestingly, the fuel efficiency of the Jet engine, expressed as TSFC, demonstrated a decrease, with an average reduction of 13.8% observed for PPO.
14
Content available Investigation of the efficiency of a dual-fuel gas turbine combustion chamber with a plasma‒chemical element
60%
Serbin S. , Diasamidze B. , Dzida M. , Chen D.
Polish Maritime Research
|
2023
|
tom nr 2
68--75
EN
The study is devoted to the possibility of increasing the efficiency of the working process in dual-fuel combustion chambers of gas turbine engines for FPSO vessels. For the first time, it is proposed to use the advantages of plasma‒chemical intensification of the combustion of hydrocarbon fuels in the dual-fuel combustion chambers, which can simultaneously operate on gaseous and liquid fuels. A design scheme of a combustion chamber with a plasma‒chemical element is proposed. A continuous type mathematical model of a combustion chamber with a plasma‒chemical element has been developed, which is based on the solution of a system of differential equations describing the processes of chemical reactions in a turbulent system, taking into consideration the initiating effect of the products of plasma‒chemical reactions on the processes of flame propagation. A modified six-stage kinetic scheme of hydrocarbon oxidation was used to simultaneously predict the combustion characteristics of the gaseous and liquid fuels, taking into account the decrease in the activation energy of carbon monoxide oxidation reactions when the products of the plasma‒chemical element are added. The results reveal that the addition of plasma‒chemical products significantly reduces CO emissions in the outlet section of the flame tube (from 25‒28 ppm to 3.9‒4.6 ppm), while the emission of nitrogen oxides remains practically unchanged for the studied combustion chamber. Further research directions are proposed to enhance the working process efficiency of a dual-fuel combustion chamber for gas turbine engines as part of the power plant of FSPO vessels.
15
Content available remote State-of-the-art technologies of turbine blade machining by methods of creep feed grinding
60%
Poletaev V. A.
Scientific Problems of Machines Operation and Maintenance
|
2012
|
tom Vol. 47, nr 2
37--42
EN
The paper highlights the modern method of high-performance machining of geometrically complex surfaces of gas turbine engine (GTE) blades, i.e. the method of creep feed grinding. This method is widely used to machine parts made of the difficult-to-get materials, e.g. the heat-resistant nickel alloys and the cobalt based alloys applied in the production of GTE parts. The grinding process under consideration is the main technological procedure to machine the geometrically complex surfaces of turbine blade roots. It is these surfaces that determine the precise position of blades on the wheels, and correspondingly in GTE rotors and stators. The cut-maps for blade root creep feed grinding are presented, including their detailed description and guidelines in terms of their application under production conditions subject to automated production and the employment of equipment manufactured by well-known companies.
16
Content available Pokazateli gazoturbinnojj ustanovki s termokhimicheskojj regeneraciejj tepla
60%
Cherednichenko O. , Oschip O.
Motrol. Motoryzacja i Energetyka Rolnictwa
|
2013
|
tom 15
|
nr 2
17
Content available Possibilities To Bearings Diagnosis Of The Gas Turbine Engine Lm2500 On The Basis Of Oil Research On
60%
Mironiuk W.
Journal of Polish CIMAC
|
2007
|
tom Vol. 2, no 2
347-354
EN
While operation a gas turbine engine more modest method of research are brought into effect. But one of a basic method of estimate a technical condition of gas turbine engines bearing is oil analysis. To estimate a technical condition of gas turbine engines bearing systems on the basis of oil research on, an x-ray method of radio-isotope fluorescence was used. This method has been also satisfactorily used in aircraft engine diagnosis. This paper presents the method of diagnosis bearings of marine gas turbines on the basis of studies of mechanical contamination in oil. Results of mechanical contamination research in oil vs time of engine work are presented. On the basis of experiments results the analytical function that makes calculating the future value of a process possible was chosen.
18
Content available Wpływ zmian kąta ustawienia łopatek kierownicy wlotowej sprężarki osiowej na parametry pracy okrętowego turbinowego silnika spalinowego
60%
Wirkowski P.
Diagnostyka
|
2007
|
tom nr 3(43)
41-47
PL
W artykule zaprezentowano analizę teoretyczną zagadnienia wpływu zmian ustawienia regulowanych łopatek kierownicy stopnia osiowego sprężarki turbinowego silnika spalinowego na parametry pracy samej sprężarki jak i całego silnika. Przedstawiono również wyniki badań własnych na obiekcie rzeczywistym. Wprowadzane zakłócenia w prawidłowym funkcjonowaniu układu zmian nastawy regulowanych łopatek kierownic miały swoje odzwierciedlenie w wartościach mierzonych parametrów.
EN
This paper presents theoretical analysis of problem influence of changes settings variable stator vanes axial compressor of gas turbine engine on work parameters of compressor and engine. Results of own researches on real engine are presented too. Incorrect operation of change setting system of variable vanes caused changes of measured parameters values.
19
Content available Badania wpływu struktury elektrowni gazowo-parowych na charakterystyki sprawności
60%
Kotowicz J. , Chmielniak T.
Zeszyty Naukowe / Akademia Morska w Szczecinie
|
2006
|
tom nr 10 (82)
273-286
PL
W artykule przedstawiono dwie metodologie określania sprawności elektrowni gazowo-parowych. Dla każdej metodologii przedstawiono przykłady obliczeniowe. Opracowane metodologie pozwalają wyznaczyć sprawność badanych układów w funkcji temperatury na wlocie do turbiny gazowej i stopnia sprężania przy optymalnej części parowej układu. Obliczenia wykonano dla różnych struktur elektrowni: z kotłem jednociśnieniowym, dwuciśnieniowym z przegrzewem i bez przegrzewu międzystopniowego oraz trójciśnieniowym z przegrzewem międzystopniowym.
EN
The paper deals with two methods of determining the efficiency of combined gas-and-steam power stations. For each of them examples of calculations have been quoted. These two methods permit to determine the efficiency of investigated systems as a function of temperature at the inlet to the gas turbine and the compression ratio for the optimal steam part of the system. Calculations have been carried out concerning various structures of power stations with a single-pressure waste-heat boiler, a double-pressure waste-heat boiler with and without reheat and a triple-pressure waste-heat boiler and reheat.
20
Content available Model dynamiczny wytwornicy spalin z symulowanymi uszkodzeniami
60%
Grządziela A.
Biuletyn Wojskowej Akademii Technicznej
|
2010
|
tom Vol. 59, nr 4
71-83
PL
W artykule przedstawiono metodę modelowania wirnika wytwornicy spalin silnika turbinowego wraz z wprowadzonymi obciążeniami pochodzącymi m.in. od niewyrównoważenia wirnika. Model umożliwia wprowadzenie wirtualnego przemieszczenia osi wału wirnika, statycznego i dynamicznego niewyrównoważenia w zakresie parametrów eksploatacyjnych charakterystycznych dla rzeczywistego silnika. Równania ruchu uwzględniające oddziaływania zewnętrzne zaimplementowano do środowiska Matlab Simulink. Model wirnika pozwala na transmisję momentu napędowego zarówno w symulowanym procesie rozruchu zimnego jak i gorącego. Podstawowymi oddziaływaniami dynamicznymi występującymi w modelu są: moment napędowy, aerodynamiczne momenty oporowe, pionowe i poziome siły działające na wsporniki łożysk, oddziaływania wynikające z niewyrównoważenia mającego swoje źródło w zmianie stanu technicznego wirnika. Uzyskane wyniki przebiegów czasowych parametrów drganiowych oraz ich widma zostały zidentyfikowane z wynikami badań rzeczywistego silnika pracującego na okręcie, co było jednym z głównych celów badań. Wyniki wykazały wysoką zgodność oraz wrażliwość na wprowadzane wartości brzegowe potwierdzające przydatność modelu w diagnostyce technicznej. Ważnym atutem modelu jest brak jego wrażliwości na zewnętrzne oddziaływania zakłócające środowiska morskiego. Uzyskany model podczas identyfikacji potwierdził swoją wrażliwość zarówno na zmienne parametry ruchu jak i zadane oddziaływania zmieniające jego stan techniczny.
EN
The paper presents a method of modelling of gas generator rotors at the presence of virtually introduced dynamics loads, like unbalancing effects. The rotors model provides opportunities for introducing shaft displacements, static and dynamic unbalancing and rotations similar to those observed in a real object. The equations of motion, taking into account the action of external agents, were implemented to the Matlab Simulink software. In the rotors model, the driving torque is transmitted from the cold and hot start processes. The following actions were introduced to the proposed dynamic model: main engine driving torque, aeorodynamic antitorques, horizontal and vertical forces, the action resulting from changes in relative positions of load-carrying bearings and thrust bearings in the rotors line, the action of the unbalancing coming from changes of technical state. The obtained time-histories and their spectra were compared with the experimental results of the tests performed on the marine testing ground. A basic goal of modelling is the identification of the diagnostic model. In the reported case, comparing the results of the empirical studies and the simulations has proved good applicability of the proposed model. The obtained results confirmed model sensitivity to changes of technical state of the object and varying input parameters. A vital property of the model was the insensibility of the unbalancing symptom to the action of assumed environmental disturbances, such as sea environment forces. The performed model identification confirmed its sensitivity to changing parameters of motion and external actions.
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