Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Sayyed Mahdi Sajedi"'
Autor:
Sayyed Mahdi Sajedi, Parviz Ghadimi
Publikováno v:
AIP Advances, Vol 10, Iss 9, Pp 095206-095206-13 (2020)
Analysis of the hydrodynamic performance of a high-speed craft in calm water and seakeeping in irregular waves have attracted the attention of many researchers. In the current paper, experimental tests have been conducted on three mono-hull high-spee
Externí odkaz:
https://doaj.org/article/0a309384df2b43fdb464d97e0ab4f685
Autor:
Sayyed Mahdi Sajedi, Parviz Ghadimi
Publikováno v:
Cogent Engineering, Vol 7, Iss 1 (2020)
Transverse steps in modern high-speed craft can increase the longitudinal stability in addition to reducing frictional resistance. The porpoising instability can also be avoided by selecting the appropriate location and height of the transverse step.
Externí odkaz:
https://doaj.org/article/a978bfceb4f74cc08ac1ba7bbeeef5fa
Autor:
Sayyed Mahdi Sajedi, Parviz Ghadimi
Publikováno v:
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering. 46:715-731
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9625964fba6fe4f848ba6344230b0c3
https://doi.org/10.1007/s40997-022-00519-8
https://doi.org/10.1007/s40997-022-00519-8
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment. 237:238-256
Speed and stability are two essential criteria for assessment of planing hull performance. Accordingly, the effects of step shape on these vessels’ hydrodynamic performance and stability are experimentally investigated. Five different models are st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92f3d33d3cc7b62a1b83ba2f5a46ae7e
https://doi.org/10.1177/14750902221098304
https://doi.org/10.1177/14750902221098304
Publikováno v:
Mathematical Problems in Engineering.
Providing steps at the bottom of a high-speed craft could decrease the resistance and enhance the longitudinal stability by dividing a single pressure hump into several ones and extending the hydrodynamic pressure towards aft of the vessel. In the pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2715919cb702686b54de12e603f13c4
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 235:3223-3235
High-speed vessels exhibit various motions and accelerations in calm water and sea waves. For examining the behavior of high-speed vessels, it is possible to examine these movements in laboratory models. In this paper, a single-step model in calm wat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0147f7b4e5a8cee2bc891c1f6b15af1b
https://doi.org/10.1177/0954406220968126
https://doi.org/10.1177/0954406220968126
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 233:4637-4652
This paper presents experimental and numerical investigation of stability and rooster tail of a mono-hull high-speed planing craft with a constant deadrise angle. Initially, a one-fifth scale model was tested in a towing tank, which showed porpoising
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8067b8c1b694c32b6969303697478bd2
https://doi.org/10.1177/0954406219833722
https://doi.org/10.1177/0954406219833722
Publikováno v:
Scientia Iranica.
One of the most well-known strategies to eliminate or reduce the longitudinal instabilities in planing hull, is to reduce the trim of the craft. In the current study, porpoising is controlled through creating a transverse step, and the combination of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91868def61f9620d2b9dbb032d9f75db
https://doi.org/10.24200/sci.2020.56271.4680
https://doi.org/10.24200/sci.2020.56271.4680
Autor:
Sayyed Mahdi Sajedi, Parviz Ghadimi
Publikováno v:
Mathematical Problems in Engineering, Vol 2020 (2020)
Stability of a high-speed craft is an essential matter, and porpoising is one of the most critical instabilities that could occur in some planing hulls due to inappropriate design. In this paper, the porpoising phenomenon and variation of step locati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c1a90dc32862aa0a67286c371c3ec36
https://doaj.org/article/2189a5d4399f44b6bb817ba87339ee99
https://doaj.org/article/2189a5d4399f44b6bb817ba87339ee99
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 11, Iss 4, Pp 905-918 (2018)
In the current paper, different experiments are conducted on a high speed planing craft in irregular waves, with and without a wedge. Performance and seakeeping aspects of these planing hulls in the form of trim, rise-up, and resistance in regular wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b2f5d5577d275365b92e9458af66a3e
https://doi.org/10.29252/jafm.11.04.28599
https://doi.org/10.29252/jafm.11.04.28599