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Wyszukujesz frazę "transport from seabed" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Waves, Currents and Seabed Level Change in the Port of Gdynia During Extreme Events
    Autorzy:
    Sapiega, P.
    Zalewska, T.
    Wochna, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201476.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    gulf of Gdansk
    sea wave
    hazard analysis
    Harbour areas
    transport from seabed
    hydrodynamic effects
    surface current
    hydrodynamic model
    Opis:
    The primary purpose of the paper is to identify port areas most exposed to extreme hydrodynamic conditions (waves, sea currents, seabed level change). The results of modelling using SWAN wave model, MIKE 3D model, and reanalysis and measurement data were used in paper. Swell may exceed 0.8 m for winds exceeding 15 m s-1 from the west and south. During extreme conditions, sea currents can reach 0.4 ms-1 in the outer part of the bay adjacent to the port. Port basins do not show changes in the thickness of the seabed for the given maximum values of bottom currents. The most extensive deposition of the seabed and shore sediments (up to 0.04 m) is found on the Gdynia-Oksywie beach adjacent to the port and the approach fairway at the offshore currents. The outer area of the main breakwater is the most exposed to erosive activity (-0.012 m).
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 515--521
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theoretical research on the stability of the transport module intended for transport from the seabed
    Autorzy:
    Filipek, W.
    Broda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/27315838.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Opis:
    The interest in sea mining has resulted in the recent years in the creation of many new methods for the exploitation of marine deposits as well as the transport from the seabed to the. For several years, the authors have been trying to develop new concepts of transport from the seabed. In previous publications, the authors presented the concept of an autonomous transport module for transport from the seabed. The research so far has focused on the development of the module's operation principles, determination of the energy source in the transport process and changes in the average density of the transport module. In this publication, the authors focused on the stability problem of the transport module during deployment and ascent. This is a very important issue, because the stability of the module will determine its practical suitability for transport from the seabed.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 605-612
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental research on the concept of using an autonomous transport module for transport from the seabed
    Autorzy:
    Filipek, Wiktor
    Broda, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/27315917.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    górnictwo morskie
    transport z dużych głębokości
    autonomiczny moduł transportowy
    marine mining
    transport from great depths
    autonomous transport module
    Opis:
    The great interest in the exploitation of sea deposits has in recent years resulted in the creation of many consortia conducting research on various methods of mining and transport to the surface. Exploitation of the shelf areas of crude oil and gas as well as solid minerals is successfully carried out in many places around the world using various methods. More and more often, however, we want to obtain natural resources found at great depths such as polymetallic nodules and massive polymetallic sulphides. This puts much greater demands on scientists and engineers. Unfortunately, solutions developed so far are characterized by high energy consumption. For several years, the authors have been researching new concepts of transport from the seabed. In previous years the authors presented theoretical research results of using a new method involving the use of pyrotechnic materials as a source of energy in transport from the seabed from large depths and experimental ones with the use of potassium nitrate and ammonium nitrate in a controlled pyrotechnic reaction and they compared three conceptions of transport of dredge spoil from the point of view of energy demand. This publication presents the results of the continuation of research, this time on the concept of building an autonomous transport module and its operating principles. The construction of the laboratory stand and the way of conducting experiments are discussed. The results of experimental research are presented, which confirm the possibility of using the discussed concept in transport from the seabed.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 267-275
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on the concept of using calcium carbide as a source of energy for transport from the seabed
    Autorzy:
    Filipek, Wiktor
    Broda, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/27315919.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    górnictwo morskie
    transport z dużych głębokości
    węglik wapnia
    acetylen
    marine mining
    transport from great depths
    calcium carbide
    acetylene
    Opis:
    The growing interest in the exploitation of marine deposits has resulted in the development of research on deposits and technologies for their exploitation. For several years, the authors have been dealing with one of the most important problems in the deep sea mining of mineral deposits, namely transport from great depths. This publication presents theoretical considerations regarding the use of calcium carbide as a source of energy for transport from the seabed. The authors proposed three lines of the course of the decomposition reaction of calcium carbide and then analyzed the possibility of their use. From the obtained results it can be concluded that the maximum depth of use of a simple CaC2 distribution is about 1 km, while using the method proposed by the authors based on the "balance of forces" (using an additional medium) it is possible to apply this method to any depth occurring on Earth.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 277-284
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theoretical research on the gas phase density change in processes occurring during work of the transport module intended for transport from the seabed
    Autorzy:
    Filipek, W.
    Broda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/27315837.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    marine mining
    transport from great depths
    autonomous transport module
    górnictwo morskie
    transport z dużych głębokości
    transport autonomiczny
    Opis:
    In recent years, we have observed a great interest in the exploitation of marine deposits by various methods of mining and transport to the surface. However, obtaining natural resources deposited at greater depths such as polymetallic nodules and seafloor massive sulphides - SMS creates a lot of challenges for both scientists and engineers. The solutions developed so far, unfortunately, have so far been characterized by high energy consumption. For several years the authors have been conducting theoretical and experimental research on new concepts of seabed to surface transport. The results of them have been presented in previous publications. This publication presents the results of the continuation of research on the concept of construction and operation of an autonomous transport module (submitted for printing). It focuses on a theoretical analysis of the change in gas phase density in the processes occurring during operation of the transport module intended for transport from the seabed. For this purpose, a reduced form of the van der Waals equation was used in the form of a third-degree equation for parameters interested from the point of view of the transport module.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 597-604
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental verification of the concept of the use of controlled pyrotechnic reaction as a source of energy as a part of the transport system from the seabed
    Autorzy:
    Filipek, W.
    Broda, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/135689.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    deep sea mining
    transport from the sea floor
    blasting materials
    pyrotechnics
    experimental verification
    source of Energy
    Opis:
    In this article the authors discuss the concept of using pyrotechnical materials for transportation in deep sea environment. The use of pyrotechnical materials in underwater transportation involves their use as a source of energy (needed, for instance, in emptying the ballast tank). The authors presented the experimental verification of the usefulness of pyrotechnical materials in transporting from great depth. In the experiments, a modified composition black powder was used as source of energy. In the research the authors focused on two methods of controlling the pyrotechnical reaction effects, i.e., mechanical suppression of the blast, so as to reduce its negative effect on the housing of the transporter, and control of the pyrotechnical reaction itself. The obtained results confirm the possibility of using pyrotechnical materials in transportation of deposits from considerable depth.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 49 (121); 77-83
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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