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    Wyświetlanie 1-3 z 3
    Tytuł:
    Application of local exhaust systems to reduce pollution concentration near the road
    Autorzy:
    Biliaiev, Mykola
    Pshinko, Oleksandr
    Rusakova, Tetiana
    Biliaieva, Viktoriia
    Sładkowski, Aleksander
    Powiązania:
    https://bibliotekanauki.pl/articles/1841237.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    automobile transport
    pollution concentration
    two-level exhaust system
    transport samochodowy
    stężenie zanieczyszczeń
    dwupoziomowy układ wydechowy
    Opis:
    In this study, the methodological foundations of the technology for the local reduction of chemical pollution from vehicles were improved through the use of twolevel suction units and guide plates of various lengths installed on the nozzles of the suction devices. A program has been developed for the numerical calculation of the carbon monoxide concentration field for evaluating the efficiency of using two-level exhaust systems with different lengths of guide plates on the gas flow selection pipes. The solution of the equations of hydrodynamics and mass transfer is carried out on the basis of finite-difference methods. A number of physical and computational experiments have been carried out; it has been established that the concentration of carbon monoxide in the zone of two-level suctions location decreases by 46-68%.
    Źródło:
    Transport Problems; 2020, 15, 4, cz. 1; 137-148
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computing model for simulation of the pollution dispersion near the road with solid barriers
    Autorzy:
    Biliaiev, Mykola
    Pshinko, Oleksandr
    Rusakova, Tetiana
    Biliaieva, Viktoriia
    Sładkowski, Aleksander
    Powiązania:
    https://bibliotekanauki.pl/articles/2098117.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    automobile transport
    pollution concentration
    solid barrier
    transport samochodowy
    koncentracja zanieczyszczeń
    stała bariera
    Opis:
    In this study, a numerical model is proposed for calculating pollution zones near the road, taking into account the geometry of the automobile transport meteorological conditions, the location of the barriers and their height, and the chemical transformation of nitrogen oxides in the atmospheric air. The numerical solution is based on the integration of the mass transfer equations using the finite-difference method. To determine the components of the air flow velocity vector, a two-dimensional model of the potential flow is used, where the Laplace equation for the velocity potential is the modeling equation. Based on this numerical model, a software package has been developed that allows computational experiments and does not require large expenditures of computer time. Based on the results obtained, an assessment was made of the effectiveness of the use of barriers to reduce the level of air pollution near highways. It has been established that the use of barriers of different heights reduces the level of pollution behind the road by approximately 20-50%.
    Źródło:
    Transport Problems; 2021, 16, 2; 73--86
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical modeling of the aeroion mode in a car
    Autorzy:
    Biliaiev, Mykola
    Pshinko, Oleksandr
    Rusakova, Tetiana
    Biliaieva, Viktoriia
    Sładkowski, Aleksander
    Powiązania:
    https://bibliotekanauki.pl/articles/2203882.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    negative ions
    car ionizer
    mathematical modeling
    car passenger
    comfort
    jony ujemne
    jonizator samochodowy
    modelowanie matematyczne
    pasażer
    komfort
    Opis:
    In this study, a mathematical method is proposed for calculating the concentration field of air ions of different polarities and dust levels in the passenger compartment, taking into account the geometry of the passenger compartment and seats, shelves, and other internal elements of the passenger compartment. The method also takes into account changes in the rate of the air flow ventilation, the location and number of ionizers, and sources of positive ions and dust, taking into account their different intensities and locations. On the basis of a numerical model for this method, software has been developed that allows users to carry out computational experiments without requiring much time for calculation. Based on the results, the optimal location of the ionizer in the passenger compartment of the car was determined to ensure comfortable conditions for the stay of passengers, which favorably affects their health. It has been found that the presence of two ionizers is optimal for creating comfort in the car with an ionization intensity of Qn= 0.47 ×1010 ions/s located at the top of the car. If there is one ionizer located on the dashboard or at the top of the car with a higher ionization rate than ions/s, it is not possible to simultaneously provide optimal ionization parameters for passengers in the front and rear seats of the car.
    Źródło:
    Transport Problems; 2022, 17, 2; 19--32
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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