Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Znaleziono wyników: 25
first rewind previous Strona / 2 next fast forward last
help Sortuj według:

help Ogranicz wyniki do:
1
100%
Archivum Combustionis
EN A computational study of the combustion process in a GTD-350 turbine engine combustor is presented. The numerical grid generation process and the optimization of its density are described. For the assumed boundary conditions, numerical simulations of fuel dispersing, mixing and combustion process in[...]
2
100%
Archivum Combustionis
EN The study presents 3-D numerical simulations of aerodynamic flow inside a GTD-350 turbine engine combustion chamber. The process of generating a numerical grid, determining boundary conditions and their properties are described. For the assumed boundary conditions, there were performed numerical sim[...]
3
100%
Archivum Combustionis
EN Processes of dusty flame quenching and its acceleration by water sprays were investigated. For better understanding of these problems the neutral sand particles and typical extinguishing powders were also used. The study was carried out in the 1.25 m3 explosion chamber. A corn starch-air mixture was[...]
4
100%
Prace Naukowe Politechniki Warszawskiej. Mechanika
2006 z. 212 3-112
PL W pracy przedstawiono wyniki kompleksowych badań autora nad oddziaływaniem kropel wody na płomień gazowy i pyłowy z uwzględnieniem wpływu średnicy, prędkości i liczby podawanych kropel. W pierwszym etapie prowadzono badania zachowania się w płomieniu pojedynczych kropel zawieszonych na igle kwarcowe[...]
EN The monograph contains the experimental and numerical results of the complex author's research into the interaction of water and other extinguishing media with propagating gaseous and dust flames. The research was focused on two main problems: the mechanism of interaction of single water droplets (f[...]
5
100%
Archivum Combustionis
2001 Vol. 21 nr 4 245-259
EN The influence of water sprays on propagation process of gaseous flames is presented in the paper. Data were obtained in the vertical perspex tube of 0.7 m in length and 0.08 m in diameter. Example pictures showing flame quenching and flame acceleration by means of water sprays are shown. Furthermore[...]
6
100%
Archivum Combustionis
EN Results are presented from experimental and analytical studies on the influence of single water droplets on premixed gaseous flame propagation. The research was focused on the mechanism of interaction of single water droples with propagating methane flame. Experimental data were obtained in vertical[...]
7
100%
Archivum Combustionis
EN Comparative studies of the dust explosion process at normal gravity and microgravity conditions for different kinds of dust , different dust concentrations and different levels of dispersion turbulence are presented. The research was carried out in the 13.5 dm3 cylindrical combustion chamber with L/[...]
8
100%
Archivum Combustionis
2014 Vol. 34 nr 2 101--116
EN The aim of this paper is to evaluate the impact of modifications of selected geometric parameters on the formation of the main recirculation zone in the combustion chamber of GTD-350 turbine engine. Changes were evaluated based mainly on the swirl number as a non-dimensional criterion to characteriz[...]
9
63%
Journal of Power of Technologies
EN The study presents 3-D numerical simulations of aerodynamic flow inside micro-turbine engine combustion chamber. The process of creation of a numerical grid and its properties are described, and then on the basis of gas-dynamic calculation of the theoretical engine cycle boundary conditions were spe[...]
10
63%
Computational Methods in Science and Technology
2013 Vol. 19, No. 2 107--114
EN Most commercially available wall functions for k-" turbulence models base on the two-zonal near-wall flow division assumption. Viscous and log-law sublayers are distinguished. In this article the three-zonal wall function concept with a buffer sublayer is developed. The aim of this new wall function[...]
11
63%
Journal of Power of Technologies
EN The research aimed to test the effectiveness of gas and dust explosion suppression by means of a super fast explosion suppression system with a volume of 5 dm3. Smokeless powder as an explosive charge and sodium bicarbonate as a suppressing material were used. The experiments were carried out using [...]
12
63%
Archivum Combustionis
EN The objective of the study was to carry out an analysis of Fluent numerical code in context of piston engine simulations. The work contains a survey of options and models of Fluent 12.1, that were created for modelling piston engines. The work also includes an analysis of combustion models that may [...]
13
63%
Journal of KONES
EN The aim of this paper is to provide comprehensive bench testing results for small gas turbine engine with a strong focus on the flue gas emission measurements. After a short overview of small gas turbine GTM-120 design and working principles, the test bench developed at the Institute of Heat Enginee[...]
14
63%
Archivum Combustionis
2013 Vol. 33 nr 4 207--214
EN The The paper presents results of numerical simulations of combustion processes inside a piston engine with spark-ignition. The simulation was performed using ANSYS Fluent. For simulation of the combustion process, a new model of combustion, being an extension of a model available in the software, t[...]
15
63%
Rynek Energii
2015 Nr 4 103--109
PL W artykule przedstawiono eksperymentalne badania wpływu zmian geometrii otworów rozcieńczających komory spalania miniaturowej turbiny gazowej na efektywność procesów spalania i emisje substancji szkodliwych. Skupiono się przede wszystkim na pomiarach takich parametrów jak: temperatura całkowita za k[...]
EN The study presents the influence of changes in the geometry of the combustor liner dilution holes on miniature gas turbine combustion efficiency and emissions of harmful substances. Among the many measurable parameters essential attention has been given to the measurement of the total temperature at[...]
16
63%
Journal of Power of Technologies
EN The Weighted-Sum-of-Gray-Gases Model (WSGGM), based on temperature dependent weighting factors, is an efficient method of determining the absorption coefficients in numerical modeling of combusting flows. Weighting factors are obtained by polynomial fitting of experimental data for only two reagents[...]
17
63%
Energetyka
2005 nr 8 515-516
PL W dużym skrócie przedstawiono trzy dziesięciolecia istnienia Elektrowni Bełchatów, której historia rozpoczęła się w latach sześćdziesiątych ubiegłego stulecia. Odkrycie gigantycznych, jak na polskie warunki, złóż węgla brunatnego rozpoczęło tzw. epopeję bełchatowską. Dziś Elektrownia Bełchatów wchod[...]
EN There is presented briefly thirty years of existence of Bełchatów powerstation, which history began in sixties of the previous century. Discoveryof gigantic, in Polish conditions, lignite resources began so called Bełchatów epopee. Bełchatów power station belongs to day to the BOT Group and it gener[...]
18
51%
Prace Naukowe Instytutu Górnictwa Politechniki Wrocławskiej. Konferencje
PL W referacie przedstawiono wyniki badań niezawodnościowych bloków energetycznych o mocy 360 MW opalanych węglem brunatnym, zainstalowanych w Elektrowni Bełchatów SA Analizę przeprowadzono w oparciu o zgromadzone w komputerowej bazie danych populacje zdarzeń eksploatacyjnych, zaistniałych na wszystkic[...]
EN The paper presents results of reliability investigations for the 360 MW lignite fired power units of Bełchatów Power Plant, obtained from computer data base of the operation events collected since the commissioning in 1982. Obtaining higher reliability coefficients in lignite fired power units is mo[...]
19
51%
Archivum Combustionis
EN In the presented work the dust-air flames structure was studied. The flame propagation process was visualized by using the Schlieren and interferometric methods. Frame, streak and compensation photography was used for study the flame structure. Temperature was measured by means of a resistance therm[...]
20
51%
Energetyka
1998 nr 9 349-356
first rewind previous Strona / 2 next fast forward last