Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Bu-Geun Paik"'
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
Publikováno v:
한국해양공학회지, Vol 37, Iss 4, Pp 137-144 (2023)
This study investigates the experimental parameters of particle image velocimetry (PIV) to enhance the measurement technique for turbulent flow fields around a circular cylinder at a Reynolds number (Re) of 1.4×105. At the Korea Research Institute o
Externí odkaz:
https://doaj.org/article/504a30f97f7d4affb281037a4642fcf4
Autor:
Seong-Rak Cho, Bu-Geun Paik
Publikováno v:
Lubricants, Vol 11, Iss 8, p 314 (2023)
Ice is a very unusual material that can not be explained by the basic physics of adhesion and friction when the ice contacts other solid materials. Several studies are being conducted to reduce resistance due to friction with sea ice during the desig
Externí odkaz:
https://doaj.org/article/9425975791db4b5aaac9f06cac63f0cc
Publikováno v:
International Journal of Naval Architecture and Ocean Engineering, Vol 14, Iss , Pp 100426- (2022)
In this study, we developed an inviscid model to predict the shape of supercavitation in a wide range of Froude numbers (Fr) based on the potential theory suggested by Logvinovich (1973). Visualization experiments were carried out in a cavitation tun
Externí odkaz:
https://doaj.org/article/e2fc43faff0a4c2c8997c23889b8eb71
Publikováno v:
Journal of Marine Science and Engineering, Vol 10, Iss 2, p 266 (2022)
One of the important things in a ship’s rudder design is the incidence angle of the rudder inflow to improve rudder cavitation performance. In the present study, the rudder inflow is measured by a 3-D LDV (laser Doppler velocimetry) system in a lar
Externí odkaz:
https://doaj.org/article/765239382349408faea497b08051dbc8
Publikováno v:
Applied Sciences, Vol 11, Iss 14, p 6247 (2021)
A practical cavitator design method for straight-running-type supercavitating torpedoes was developed in this paper. Design requirements were first drawn in terms of torpedo performance characteristics, such as maximum range and motion stability. Thi
Externí odkaz:
https://doaj.org/article/1a08f457ea904f9e997fad1c4b93815d
Publikováno v:
International Journal of Naval Architecture and Ocean Engineering, Vol 9, Iss 1, Pp 55-65 (2017)
Underwater torpedo has control fin with very low aspect ratio due to launching from limited size of cylindrical torpedo tube. If the aspect ratio of control fin of underwater vehicle is very low three-dimensional flow around control fin largely reduc
Externí odkaz:
https://doaj.org/article/eefd1227a4d1484c87ba40ceb884bda3
Publikováno v:
Applied Sciences, Vol 8, Iss 10, p 1937 (2018)
The goal of this study involves developing an efficient and accurate parallel computation method for two-phase flow problems including complex moving foreign bodies. The proposed parallel computing techniques are based on the moving body-fitted grids
Externí odkaz:
https://doaj.org/article/21b299728fc74e73b32a4214eaa68053
Publikováno v:
International Journal of Naval Architecture and Ocean Engineering, Vol 2, Iss 3, Pp 132-138 (2010)
In the present study, the real-time monitoring system is developed based on the wireless sensor network (WSN) and power line communication (PLC) employed in the 3,000-ton-class training ship. The WSN consists of sensor nodes, router, gateway and midd
Externí odkaz:
https://doaj.org/article/4e0868e1f107456e8b472591059edfe4
Publikováno v:
Journal of the Society of Naval Architects of Korea. 60:1-9