General strength, energy efficiency (EEDI), and energy wave criterion (EWC) of deadrise hulls for transitional mode

• Autorzy: Kanifolskyi Oleksandr

Identyfikatory

DOI

10.2478/pomr-2022-0021

• Języki publikacji: EN

Abstrakty

EN

In the modern world, environmental issues come to the fore. The document of MARPOL for reducing the emission of pollutants into the atmosphere relates to the energy efficiency coefficient EEDI . This coefficient is directly related to the power of the main engine and, accordingly, to the water resistance. The way to reduce the energy efficiency factor EEDI by increasing the relative length 3 V L of the ship was proposed in this article. To determine the maximum value of the relative length, knowledge of the general strength of the vessel is required. The value of the relative section modulus of an equivalent girder for a small vessel of transitional mode is defined. The result of the graphic solution of two equations is the value of such a relative section modulus. This parameter is required to determine the limiting value of the relative length and to find solutions to reduce the coefficient EEDI . Comparative analysis of the obtained data with the data of the strength and weight of the H-girder with a length similar to the ship was conducted. The formula for determining the limiting value of the relative length was obtained from the equation of general strength. For a preliminary assessment of the future project of the ship, in terms of permissible design accelerations and the possibility of the ship moving against a sea wave of a certain height, a graph was built based on the application of the energy wave criterion EWCand the requirements of various classification societies.

Słowa kluczowe

EN

energy wave criterion; energy efficiency factor; design accelerations

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2022
• Tom: nr 3
• Strony: 4--10
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Kanifolskyi Oleksandr

• Odesa National Maritime University, Faculty of Shipbuilding, Information Technology and Systems Engineering, Odesa, Ukraine

• https://orcid.org/0000-0001-7288-4835

Bibliografia

• 1. T. Zhang, J. Ren, and L. Liu, “Prediction of ship motions via a three-dimensional time-domain method following a quad-tree adaptive mesh technique,” Polish Marit. Res., vol. 27, no. 1, 2020, doi: 10.2478/pomr-2020-0003.
• 2. S. Bielicki, “Prediction of ship motions in irregular waves based on response amplitude operators evaluated experimentally in noise waves,” Polish Marit. Res., vol. 28, no. 1, 2021, doi: 10.2478/pomr-2021-0002.
• 3. N. Dormidontov and A. Kalmychkov, “On the concept of “small vessel” inland navigation” in Experience in designing and construction, state and prospects of lowtonnage shipbuilding, Technical Conference 1966, 1966.
• 4. Germanischer Lloyd, “Rules for classification and construction. High speed craft”, 2012.
• 5. Bureu Veritas, “Rules and regulations for the classification of ships of less than 65 m in length. Part II-B. Hull Structure. Chapter 13. Light highspeed ships”, 1990.
• 6. O. Kanifolskyi, “EEDI (energy efficiency design index) for small ships of the transitional mode,” Trans RINA, Intl J Small Craft Tech, vol 156, Part B1, 2014, doi: 10.3940/rina. ijsct.2014.b1.152tn.
• 7. M. Alivagabov and others, “Reference book on small shipbuilding”, 1988.
• 8. O. Kanifolskyi and L. Krysiuk, “New area of application of the energy wave criterion (EWC): determination of the coastal navigation voyage”, Journal of Marine Science and Technology. vol 27, issue 1, 2022, doi: 10.1007/ s00773-021-00829-7.
• 9. Registro Italiano Navale. Rules for the classification of fast patrol vessels. Part B. Hull and Stability, 2007.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).