Zobrazeno 1 - 10
of 1 435
pro vyhledávání: '"supercavitation."'
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 9, Pp 2028-2044 (2024)
Modern underwater warfare necessitates the development of high-speed supercavitating torpedoes. Achieving supercavitation involves integrating a cavitator at the torpedo's front, making cavitator design a critical research area. The present study sim
Externí odkaz:
https://doaj.org/article/d58aa0c59c8d443f98339099397ddfb4
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 5, Pp 967-979 (2024)
In this study, we aim to examine the influence of water entry velocity of a single and two tandem projectile(s) on the supercavitation flow and projectile loading under wave conditions using numerical simulation. The volume of fluid model, renormaliz
Externí odkaz:
https://doaj.org/article/c209ff7d513946b3ba8b45166c06392b
Publikováno v:
Zhongguo Jianchuan Yanjiu, Vol 18, Iss 6, Pp 39-48 (2023)
ObjectivesThis paper aims to research the effects of the temperature and compressibility of liquid water on the super-cavitation phenomenon of an ultra-high-speed underwater vehicle and its motion characteristics. Methods First, based on CFD general
Externí odkaz:
https://doaj.org/article/4a59b4152e05440e91d88796d8d0fef3
Autor:
Oleksiy Vladimirovitch Malakhov, Oleksand Mukolaiyevitch Palagin, Andrii Igorevitch Naydyonov, Konstantin Andreevitch Lykhoglyad, Andrii Vladimirovitch Bondarenko
Publikováno v:
Engineering Reports, Vol 6, Iss 4, Pp n/a-n/a (2024)
Abstract Bilge and oily water (BOW) during vessel's operation are the most large‐tonnage type of waste and for their treatment all ships, in accordance with international regulatory requirements, have to be equipped with special equipment—oily wa
Externí odkaz:
https://doaj.org/article/2c392c7d845b42658f1955ba1799f9b7
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 16, Iss 10, Pp 1962-1973 (2023)
The formation of supercavitation after a high-speed projectile enters water has a decisive impact on the underwater ballistic and penetration of the projectile. In this study, Ansysfluent19.0 simulation software is used to study water entry of a chos
Externí odkaz:
https://doaj.org/article/0cd946f6e9fc45c099d2adc01c2f8b10
Publikováno v:
International Journal of Naval Architecture and Ocean Engineering, Vol 16, Iss , Pp 100582- (2024)
In this study, physical aspects of a ventilated supercavity behind different cavitator geometries such as the hydrodynamic characteristics, distribution of pressure within the cavity, hysteresis phenomenon, and gas leakage mechanism were qualitativel
Externí odkaz:
https://doaj.org/article/f68a7bf666aa406481a023b0b2fe2b59
Autor:
Arijana Filipić, David Dobnik, Ion Gutiérrez-Aguirre, Maja Ravnikar, Tamara Košir, Špela Baebler, Alja Štern, Bojana Žegura, Martin Petkovšek, Matevž Dular, Miran Mozetič, Rok Zaplotnik, Gregor Primc
Publikováno v:
Environment International, Vol 182, Iss , Pp 108285- (2023)
Water scarcity, one of the most pressing challenges we face today, has developed for many reasons, including the increasing number of waterborne pollutants that affect the safety of the water environment. Waterborne human, animal and plant viruses re
Externí odkaz:
https://doaj.org/article/8ecb95fe935349aa8678d834b6f4fc8d
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 17, Iss 1 (2023)
ABSTRACTDespite decades of rigorous research into supercavitating flow, there is still a lack of in-depth knowledge on the properties of ventilated supercavitation with cavitators of varying angle of attack. To address this gap, this study aimed to i
Externí odkaz:
https://doaj.org/article/a6d3d27f85384d8aa341a882fb8ca4e0
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 17, Iss 1 (2023)
Supercavitation has been recently presented as an effective method for the drag reduction of underwater vehicles. However, maintaining the supercavitating state requires a lot of energy, making vehicles difficult to control. Therefore, it is necessar
Externí odkaz:
https://doaj.org/article/cc77c8cb664b43a799dd9042f22a8add
Publikováno v:
Energies, Vol 17, Iss 7, p 1735 (2024)
An unmanned underwater vehicle (UUV) powered by a compressed air power system is proposed to address challenges for battery/motor-powered vehicles under high-speed navigation, long endurance, and high mobility. These vehicles actively utilize superca
Externí odkaz:
https://doaj.org/article/cd04961f838b475c8b8f6a62a96e5bf8