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    Wyświetlanie 1-5 z 5
    Tytuł:
    Parallelized numerical code for derivation of heat transfer coefficient from experimental data
    Autorzy:
    Telega, J.
    Doerffer, P.
    Szwaba, R.
    Kaczyński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1938631.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska
    Tematy:
    Matlab parallel computation
    heat transfer coefficient
    blade cooling
    Opis:
    An application of parallel computation capabilities in the MATLAB language for the analysis of experimental data concerning the heat transfer coefficient on ribbed walls is presented in this paper. A description of the experimental study, mathematical model and numerical implementation is also given. The obtained results of measurements and calculations shown here clearly indicate the influence of ribbed walls on the heat transfer coefficient distribution in an internal, subsonic flow.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2015, 19, 2; 197-205
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novel elecrostatic wind energy converter: an overview
    Autorzy:
    Nowakowska, H.
    Lackowski, M.
    Ochrymiuk, T.
    Szwaba, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1938630.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska
    Tematy:
    electrostatic wind energy converter
    bladeless wind generator
    Opis:
    The article discusses the historical development and embodiments of the concept of generating electricity from wind energy without the use of wind turbines, so called electrostatic bladeless generators or generators without moving parts. A simplified theory and the principles of operation of generators that use a motion of charged particles in an electric field occurring under the drag force of the wind are described. Two contemporary solutions utilising the principle that has reached an implementation stage, EWICON and AerovoltaicTM, are presented in detail.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2015, 19, 2; 207-218
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of limiting walls on shock wave structure in single passage test section with compressor profile
    Autorzy:
    Piotrowicz, M.
    Flaszyński, P.
    Szwaba, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1938636.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska
    Tematy:
    shock wave
    laminar-turbulent transition
    transonic compressor
    Opis:
    The shock wave boundary layer interaction on the suction side of a transonic compressor blade is one of the main objectives of the TFAST project (Transition Location Effect on Shock Wave Boundary Layer Interaction). In order to look more closely into the flow structure on the suction side of the blade, a design of a turbine passage model in a rectilinear transonic wind tunnel was proposed. The model which could reproduce the flow structure, the shock wave location, the pressure distribution and the boundary layer development similar to the obtained in a reference cascade profile is the main objective of the design presented here. The design of the proposed test section is very challenging, because of the existence of a shock wave, its interaction with the boundary layer and its influence on the 3-D flow structure in the test section. The paper presents the influence of the test section geometry configuration on the flow structure as an effect of the shock wave boundary layer interaction.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2015, 19, 2; 141-152
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of air cooling and air-jet vortex generator on flow structure in turbine passage
    Autorzy:
    Szwaba, R.
    Flaszyński, P.
    Szumski, J. A.
    Doerffer, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1938634.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska
    Tematy:
    shock wave
    separation control
    air-jet vortex generator
    blade cooling
    Opis:
    The paper concerns the experimental investigations and numerical simulations of a high loaded model of a turbine blade. An increase in the blade load leads to enlargement of a local supersonic zone terminated by a shock wave on the suction side. The Mach number upstream of the shock reaches up to 1.6. The interaction of the shock wave with a boundary layer at such a high Mach number leads to a strong separation. Streamwise vortices generated by air-jets were used for the interaction control. The work presents the experimental and numerical results of the application of an air-jets vortex generator on the suction side of cooled turbine blades. Very interesting results were obtained in the context of the air cooling and air-jet vortex generator influence on the flow structure in the turbine passage.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2015, 19, 2; 153-166
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aerodynamic enhancement in inner channel of turbine blade
    Autorzy:
    Kaczyński, P.
    Szwaba, R.
    Puchowski, B.
    Doerffer, P.
    Flaszyński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1938640.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska
    Tematy:
    turbine blade
    internal channel
    radial passage
    blade cooling
    Opis:
    This paper presents the numerical and experimental study of the flow structure in a radial cooling passage model of a gas turbine blade. The investigations focus on the flow aerodynamics in the channel, which is an accurate representation of the configuration used in aero engines. The flow structure and pressure drop were measured by classical measurement techniques. The stagnation pressure and velocity measurements in a channel outlet plane were performed. The investigations concerning the flow field and heat transfer used in the design of radial cooling passages are often developed from simplified models. It is important to note that real engine passages do not have perfect rectangular cross sections, but include corner fillets, ribs with fillet radii and special orientation. Therefore, this work provides detailed fluid flow data for a model of radial cooling geometry which possesses very realistic features. The main purpose of these investigations was to study different channel configurations and their influence on the flow structure and pressure losses in a radial cooling passage of a gas turbine blade.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2015, 19, 2; 101-110
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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