Temat: drift forces - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Potential-based boundary element method to calculate the hydrodynamic drift force on the floating cylinder
Autorzy:: Ghafari, Hamidreza
Motallebi, Mohammad
Ghassemi, Hassan
Powiązania:: https://bibliotekanauki.pl/articles/1839734.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: floating cylinder
drift forces
boundary element method
siły dryfu
metoda elementów brzegowych
siła hydrodynamiczna
Opis:: This paper presents the calculation of the hydrodynamic drift force by using the potetial-based boundary element method (BEM). The potential theory and far-field wave drift forces solution will be described. The comparison of non-dimensional drift force for surge and heave motions are in good agreement between numerical and experimental data. The effect of different drafts and the radius of a cylinder on the drift forces (surge, heave and pitch) are presented and discussed.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 4; 69-79
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Potential-based boundary element method to calculate the hydrodynamic drift force on the floating cylinder
Autorzy:: Ghafari, Hamidreza
Motallebi, Mohammad
Ghassemi, Hassan
Powiązania:: https://bibliotekanauki.pl/articles/1839744.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: floating cylinder
drift forces
boundary element method
siły dryfu
metoda elementów brzegowych
siła hydrodynamiczna
Opis:: This paper presents the calculation of the hydrodynamic drift force by using the potetial-based boundary element method (BEM). The potential theory and far-field wave drift forces solution will be described. The comparison of non-dimensional drift force for surge and heave motions are in good agreement between numerical and experimental data. The effect of different drafts and the radius of a cylinder on the drift forces (surge, heave and pitch) are presented and discussed.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2020, 19, 4; 69-79
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Construction and analysis of new mathematical models of the operation of ship propellers in different maneuvering modes
Autorzy:: Kryvyi, O.
Miyusov, M. V.
Kryvyi, M.
Powiązania:: https://bibliotekanauki.pl/articles/24201453.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: ship propellers
curvilinear motion
mathematical models
hydrodynamic forces
hydrodynamic moments
wake fraction
thrust-deduction factor
drift angle
Opis:: The influence of the curvilinear movement of the ship on the operation of the propeller was studied. It is shown that even at small values of the drift angle and the angular velocity of the vessel, the transverse component of the force on the propeller and the moment are non-zero and cannot be neglected. The existing and proposed new effective mathematical models of the longitudinal and transverse components of force and moment caused by the operation of the ship's propeller are analyzed. Simple expressions for the coefficients of the propeller thrust and the moment on the propeller shaft, the wake fraction, the thrust-deduction factor, and the flow straightening factor on the propeller at any drift angles and angular velocity are obtained. Numerical analysis of the obtained dimensionless components of forces and moments caused by the operation of the propeller is carried out, and their adequacy is shown. It is shown how the specified parameters change for all possible values of the drift angle and angular velocity. For a few commercial vessels of various types, technical characteristics and calculated dynamic parameters are given for the construction of mathematical models of propeller operation during curvilinear movement of the vessel.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 95--102
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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