DSpace Общество: RU: Факультет "Промышленное и гражданское строительство" <br> EN: Faculty "Industrial and Civil Construction"
http://eadnurt.diit.edu.ua/jspui/handle/123456789/47
RU: Факультет "Промышленное и гражданское строительство" <br> EN: Faculty "Industrial and Civil Construction"2021-12-02T15:10:59ZReducing of Coal Dust Release from Train Wagon with Barrier
http://eadnurt.diit.edu.ua/jspui/handle/123456789/14077
Название: Reducing of Coal Dust Release from Train Wagon with Barrier
Авторы: Biliaiev, Mykola M.; Biliaieva, Viktoriia V.; Kozachyna, Vitalii A.; Berlov, Oleksandr V.; Oladipo, Mutiu Olatoye; Kirichenko, Pavlo S.
Краткий осмотр (реферат): EN: Intensive environment pollution takes place during coal transportation in open
wagons. Emission of coal dust from the coal wagons cause contamination of atmosphere and
territory adjacent to the railway track. Different ways to reduce coal dust emission from the
wagon are used in the world. Unfortunately, in Ukraine, this problem is far from solution and
there is no serious research work in this field. The aim of this work was laboratory study of
coal dust emission from the wagon model which had different barriers installed on the wagon.
Laboratory experiments were carried for coal wagon without barrier and for coal wagon which
had barriers of two types. Barrier of the first type had downwind wing. Barrier of the second
type had upwind wing. The contamination zones, concentration near the model were studied.
The obtained results illustrate that installation of barriers influence intensity of transport
corridor contamination. Also a numerical model was developed to estimate wind flow and coal
dust dispersion from the coal wagon. Equation of potential flow and equation of coal dust
dispersion were used. Implicit difference schemes of splitting were used for numerical
simulation of governing equations. Results of numerical experiment, which were performed,
are presented.
Описание: M. Biliaiev: ORCID 0000-0002-1531-7882, V. Biliaieva: ORCID 0000-0003-2399-3124, V. Kozachyna: ORCID 0000-0002-6894-5532; O. Berlov: ORCID 0000-0002-7442-0548, М. Oladipo: ORCID 0000-0001-7945-6657, P. Kirichenko: ORCID 0000-0002-0793-95932020-01-01T00:00:00ZMathematical Modeling of Shock Wave Interaction with Wagon
http://eadnurt.diit.edu.ua/jspui/handle/123456789/14076
Название: Mathematical Modeling of Shock Wave Interaction with Wagon
Авторы: Khrutch, V. K.; Biliaiev, Mykola M.; Kozachyna, Vitalii A.; Berlov, Oleksandr V.; Kirichenko, Pavlo S.; Biliaieva, Viktoriia V.
Краткий осмотр (реферат): EN: In case of some accidents on railways there may be situations when the shock wave
appears and interacts with different objects on the railway (wagons, cargo, buildings etc.). In
these cases it is necessary to predict the possible effect of shock wave diffraction on the
different objects. Study of these problems on the basis of physical experiments (laboratory
experiment or field experiment) demand expensive and unique experimental facility. In some
cases physical experiment can’t be set. That is why mathematical simulation plays the
important role in solving problem connected with shock wave propagation. For practice it is
necessary to have predictive quick computing mathematical models which allow to perform
numerical experiment on the basis of non-powerful computers. Now, in Ukraine, there is a real
deficit of mathematical models which allow to compute quickly shock wave interaction with
different objects. The aim of this work was development of quick computing numerical model
to simulate shock wave propagation and its interaction with the wagons. The model is based on
the numerical integration of Euler equations which are written in integral form. To solve
modeling equations difference scheme of splitting was used. Results of numerical modeling are
presented.
Описание: P. Kirichenko: ORCID 0000-0002-0793-9593,V. Biliaieva: ORCID 0000-0003-2399-3124, V. Kozachyna: ORCID 0000-0002-6894-5532; O. Berlov: ORCID 0000-0002-7442-0548, M. Biliaiev: ORCID 0000-0002-1531-78822020-01-01T00:00:00ZSimulation of Environmental Pollution from Diesel Locomotive
http://eadnurt.diit.edu.ua/jspui/handle/123456789/14071
Название: Simulation of Environmental Pollution from Diesel Locomotive
Авторы: Biliaiev, Mykola M.; Rusakova, Tetiana I.; Kozachyna, Vitalii A.; Berlov, Oleksandr V.; Poltoratskа, Viktoriia; Yakubovska, Zinaida M.
Краткий осмотр (реферат): EN: Diesel locomotives are widely used at Ukrainian railway stations as maneuvering
locomotives. Emissions from these diesel locomotives contain different toxic chemicals. It is
important to understand air contamination patterns which are formed at railway stations.
Understanding of these contamination patterns allows to evaluate the negative impact of diesel
locomotive emissions on environment. To solve this problem it is necessary to use
mathematical models which take into account the most important factors influencing formation
of contamination zones. This paper introduces numerical model which allows to simulate
pollutants dispersion from moving diesel locomotive. Developed numerical model is based on
three dimensional equation of potential flow and three dimensional equation of pollutant
dispersion. The model takes into account pollutants (NO, NO2) chemical transformation. To
solve three dimensional equation of potential flow the implicit difference scheme of splitt ing
was used. To solve three dimensional equation of pollutant dispersion the implicit difference
scheme of splitting was used. Euler method was used to solve numerically equations of
pollutant chemical transformation. Developed numerical model allows to take into account
influence of buildings at the railway station on the contamination zones formation. Developed
model consumes not much computer time. Results of performed numerical experiment are
presented.
Описание: M. Biliaiev: ORCID 0000-0002-1531-7882, T. Rusakova: ORCID 0000-0001-5526-3578, V. Kozachyna: ORCID 0000-0002-6894-5532; O. Berlov: ORCID 0000-0002-7442-05482020-01-01T00:00:00ZInvestigation of Heavy Metal Sources on Railways: Ballast Layer and Herbicides
http://eadnurt.diit.edu.ua/jspui/handle/123456789/13990
Название: Investigation of Heavy Metal Sources on Railways: Ballast Layer and Herbicides
Авторы: Samarska, Alla V.; Zelenko, Yuliya V.; Kovrov, Oleksandr S.
Краткий осмотр (реферат): EN: Railway operation can result in the significant environment contamination with heavy metals. The aim of the study was to broaden the knowledge about the railway transport as a source of heavy metals. Railway ballast stones and herbicides were chosen as the objects of the research since these contamination sources on railways are hardly investigated. The location of sampling the ballast stones was a passenger station, which is characterized by the high traffic intensity. The three most common glyphosate-based herbicides and two combination system herbicides of burn-down with other active agents were chosen for the analysis. The heavy metal content in the railway ballast stones was detected by means of XRF, in the herbicides ‒ by means of MP-AES. The railway ballast stones did not contain a sufficient amount of Cd, Co, Mo, Pd, Sn and W for detection. Pb and As were detected at the low concentration of less than 35 ppm only in several samples. The research results showed that the investigated railway ballast contained a significant amount of Fe, Mn, Cu, Cr and Ni. According to the absolute content of HMs in the contaminated ballast layer, they can be arranged in the following sequence: Fe > Mn > Cu > Cr > Ni > Zn > Pb > As. The content of Fe in the contaminated ballast stones was strongly correlated with that of Ni (r = 0.972), Cr (r = 0.954) and Mn (r = 0.943). These metals are components of the railway steel. Therefore, their source can be the abrasion of rails and wheels. All the investigated herbicides contained Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn. The highest content of Cd, Cr, Ni and Pb was detected in the “Anti field bindweed” herbicide, which can be related to its complicated composition. Compared to the heavy metal content in the ballast stones, the herbicides can be considered a negligible source of these pollutants.
Описание: А. Samarska: ORCID 0000-0002-0828-9457; Y. Zelenko: ORCID 0000-0001-5551-0305, O. Kovrov: 0000-0003-3364-119X2020-01-01T00:00:00Z